Commit Graph

6631 Commits

Author SHA1 Message Date
Eric Biggers
4f894483c9 firmware_loader: use SHA-256 library API instead of crypto_shash API
This user of SHA-256 does not support any other algorithm, so the
crypto_shash abstraction provides no value.  Just use the SHA-256
library API instead, which is much simpler and easier to use.

Also take advantage of printk's built-in hex conversion using %*phN.

Signed-off-by: Eric Biggers <ebiggers@google.com>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Link: https://lore.kernel.org/r/20250428190909.852705-1-ebiggers@kernel.org
Signed-off-by: Danilo Krummrich <dakr@kernel.org>
2025-04-30 21:55:54 +02:00
Linus Torvalds
3929527918 Merge tag 'modules-6.15-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/modules/linux
Pull modules fixes from Petr Pavlu:
 "A single series to properly handle the module_kobject creation.

  This fixes a problem with missing /sys/module/<module>/drivers for
  built-in modules"

* tag 'modules-6.15-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/modules/linux:
  drivers: base: handle module_kobject creation
  kernel: globalize lookup_or_create_module_kobject()
  kernel: refactor lookup_or_create_module_kobject()
  kernel: param: rename locate_module_kobject
2025-04-30 08:37:52 -07:00
Thorsten Blum
d30e845b0a regcache: Use sort()'s default swap() implementation
Use sort()'s default swap() implementation and remove the custom
regcache_defaults_swap() function.

Signed-off-by: Thorsten Blum <thorsten.blum@linux.dev>
Link: https://patch.msgid.link/20250428061318.88859-2-thorsten.blum@linux.dev
Signed-off-by: Mark Brown <broonie@kernel.org>
2025-04-30 09:38:31 +09:00
Bence Csókás
73db799bf5 PM: runtime: Add new devm functions
Add `devm_pm_runtime_set_active_enabled()` and
`devm_pm_runtime_get_noresume()` for simplifying
common cases in drivers.

Signed-off-by: Bence Csókás <csokas.bence@prolan.hu>
Link: https://patch.msgid.link/20250327195928.680771-3-csokas.bence@prolan.hu
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2025-04-29 13:04:35 +02:00
Greg Kroah-Hartman
0e4965c80e Merge tag 'gpiod-devm-is-action-added-for-v6.16-rc1' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/brgl/linux into driver-core-next
Immutable tag for the driver core tree to pull from

devres: Move devm_*_action*() APIs to devres.h
devres: Add devm_is_action_added() helper

* tag 'gpiod-devm-is-action-added-for-v6.16-rc1' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/brgl/linux:
  devres: Add devm_is_action_added() helper
  devres: Move devm_*_action*() APIs to devres.h
2025-04-28 10:18:29 +02:00
Greg Kroah-Hartman
785151f50d Merge 6.15-rc4 into driver-core-next
We need the driver core fixes in here as well.

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2025-04-28 09:51:34 +02:00
Andy Shevchenko
e383bb8f95 devres: Add devm_is_action_added() helper
In some code we would like to know if the action in device managed resources
was added by devm_add_action() family of calls. Introduce a helper for that.

Reviewed-by: Raag Jadav <raag.jadav@intel.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Zijun Hu <quic_zijuhu@quicinc.com>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Link: https://lore.kernel.org/r/20250220162238.2738038-3-andriy.shevchenko@linux.intel.com
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
2025-04-28 09:30:41 +02:00
Linus Torvalds
eb98f30442 Merge tag 'vfs-6.15-rc4.fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs
Pull vfs fixes from Christian Brauner:

 - For some reason we went from zero to three maintainers for HFS/HFS+
   in a matter of days. The lesson to learn from this might just be that
   we need to threaten code removal more often!?

 - Fix a regression introduced by enabling large folios for lage logical
   block sizes. This has caused issues for noref migration with large
   folios due to sleeping while in an atomic context.

   New sleeping variants of pagecache lookup helpers are introduced.
   These helpers take the folio lock instead of the mapping's private
   spinlock. The problematic users are converted to the sleeping
   variants and serialize against noref migration. Atomic users will
   bail on seeing the new BH_Migrate flag.

   This also shrinks the critical region of the mapping's private lock
   and the new blocking callers reduce contention on the spinlock for
   bdev mappings.

 - Fix two bugs in do_move_mount() when with MOVE_MOUNT_BENEATH. The
   first bug is using a mountpoint that is located on a mount we're not
   holding a reference to. The second bug is putting the mountpoint
   after we've called namespace_unlock() as it's no longer guaranteed
   that it does stay a mountpoint.

 - Remove a pointless call to vfs_getattr_nosec() in the devtmpfs code
   just to query i_mode instead of simply querying the inode directly.
   This also avoids lifetime issues for the dm code by an earlier bugfix
   this cycle that moved bdev_statx() handling into vfs_getattr_nosec().

 - Fix AT_FDCWD handling with getname_maybe_null() in the xattr code.

 - Fix a performance regression for files when multiple callers issue a
   close when it's not the last reference.

 - Remove a duplicate noinline annotation from pipe_clear_nowait().

* tag 'vfs-6.15-rc4.fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs:
  fs/xattr: Fix handling of AT_FDCWD in setxattrat(2) and getxattrat(2)
  MAINTAINERS: hfs/hfsplus: add myself as maintainer
  splice: remove duplicate noinline from pipe_clear_nowait
  devtmpfs: don't use vfs_getattr_nosec to query i_mode
  fix a couple of races in MNT_TREE_BENEATH handling by do_move_mount()
  fs: fall back to file_ref_put() for non-last reference
  mm/migrate: fix sleep in atomic for large folios and buffer heads
  fs/ext4: use sleeping version of sb_find_get_block()
  fs/jbd2: use sleeping version of __find_get_block()
  fs/ocfs2: use sleeping version of __find_get_block()
  fs/buffer: use sleeping version of __find_get_block()
  fs/buffer: introduce sleeping flavors for pagecache lookups
  MAINTAINERS: add HFS/HFS+ maintainers
  fs/buffer: split locking for pagecache lookups
2025-04-25 15:57:21 -07:00
Zijun Hu
142ba31d8b PM: wakeup: Do not expose 4 device wakeup source APIs
The following 4 APIs are only used by drivers/base/power/wakeup.c
internally.

- wakeup_source_create()
- wakeup_source_destroy()
- wakeup_source_add()
- wakeup_source_remove()

Do not expose them by making them as static functions.

Signed-off-by: Zijun Hu <quic_zijuhu@quicinc.com>
Link: https://lore.kernel.org/r/20250420-fix_power-v2-1-9b938d2283aa@quicinc.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2025-04-25 16:02:29 +02:00
Dan Carpenter
2806c6b8f3 driver core: auxiliary bus: Fix IS_ERR() vs NULL mixup in __devm_auxiliary_device_create()
This code was originally going to use error pointers but we decided it
should return NULL instead.  The error pointer code in
__devm_auxiliary_device_create() was left over from the first version.
Update it to use NULL.  No callers have been merged yet, so that makes
this change simple and self contained.

Fixes: eaa0d30216 ("driver core: auxiliary bus: add device creation helpers")
Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>
Reviewed-by: Jerome Brunet <jbrunet@baylibre.com>
Reviewed-by: Leon Romanovsky <leon@kernel.org>
Link: https://lore.kernel.org/r/aAi7Kg3aTguFD0fU@stanley.mountain
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2025-04-25 16:01:47 +02:00
Christoph Hellwig
e079d7c4db devtmpfs: don't use vfs_getattr_nosec to query i_mode
The recent move of the bdev_statx call to the low-level vfs_getattr_nosec
helper caused it being used by devtmpfs, which leads to deadlocks in
md teardown due to the block device lookup and put interfering with the
unusual lifetime rules in md.

But as handle_remove only works on inodes created and owned by devtmpfs
itself there is no need to use vfs_getattr_nosec vs simply reading the
mode from the inode directly.  Switch to that to avoid the bdev lookup
or any other unintentional side effect.

Reported-by: Shin'ichiro Kawasaki <shinichiro.kawasaki@wdc.com>
Reported-by: Xiao Ni <xni@redhat.com>
Fixes: 777d0961ff ("fs: move the bdex_statx call to vfs_getattr_nosec")
Signed-off-by: Christoph Hellwig <hch@lst.de>
Link: https://lore.kernel.org/20250423045941.1667425-1-hch@lst.de
Tested-by: Shin'ichiro Kawasaki <shinichiro.kawasaki@wdc.com>
Tested-by: Xiao Ni <xni@redhat.com>
Tested-by: Ayush Jain <Ayush.jain3@amd.com>
Tested-by: Heiko Carstens <hca@linux.ibm.com>
Reviewed-by: Christian Brauner <brauner@kernel.org>
Signed-off-by: Christian Brauner <brauner@kernel.org>
2025-04-25 12:11:45 +02:00
Matti Vaittinen
f243036314 property: Add functions to iterate named child
There are a few use-cases where child nodes with a specific name need to
be parsed. Code like:

fwnode_for_each_child_node()
	if (fwnode_name_eq())
		...

can be found from a various drivers/subsystems. Adding a macro for this
can simplify things a bit.

In a few cases the data from the found nodes is later added to an array,
which is allocated based on the number of found nodes. One example of
such use is the IIO subsystem's ADC channel nodes, where the relevant
nodes are named as channel[@N].

Add helpers for iterating and counting device's sub-nodes with certain
name instead of open-coding this in every user.

Suggested-by: Jonathan Cameron <jic23@kernel.org>
Signed-off-by: Matti Vaittinen <mazziesaccount@gmail.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Marcelo Schmitt <marcelo.schmitt1@gmail.com>
Link: https://patch.msgid.link/2767173b7b18e974c0bac244688214bd3863ff06.1742560649.git.mazziesaccount@gmail.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2025-04-22 19:09:52 +01:00
Rafael J. Wysocki
443046d1ad PM: sleep: Make suspend of devices more asynchronous
In analogy with previous changes, make device_suspend_late() and
device_suspend_noirq() start the async suspend of the device's parent
after the device itself has been processed and make dpm_suspend_late()
and dpm_noirq_suspend_devices() start processing "async" leaf devices
(that is, devices without children) upfront so they don't need to wait
for the other devices they don't depend on.

This change reduces the total duration of device suspend on some systems
measurably, but not significantly.

Suggested-by: Saravana Kannan <saravanak@google.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Link: https://patch.msgid.link/1924195.CQOukoFCf9@rjwysocki.net
2025-04-22 13:57:00 +02:00
Rafael J. Wysocki
aa7a9275ab PM: sleep: Suspend async parents after suspending children
In analogy with the previous change affecting the resume path,
make device_suspend() start the async suspend of the device's parent
after the device itself has been processed and make dpm_suspend() start
processing "async" leaf devices (that is, devices without children)
upfront so they don't need to wait for the "sync" devices they don't
depend on.

On the Dell XPS13 9360 in my office, this change reduces the total
duration of device suspend by approximately 100 ms (over 20%).

Suggested-by: Saravana Kannan <saravanak@google.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Link: https://patch.msgid.link/3541233.QJadu78ljV@rjwysocki.net
2025-04-22 13:57:00 +02:00
Rafael J. Wysocki
0cbef962ce PM: sleep: Resume children after resuming the parent
According to [1], the handling of device suspend and resume, and
particularly the latter, involves unnecessary overhead related to
starting new async work items for devices that cannot make progress
right away because they have to wait for other devices.

To reduce this problem in the resume path, use the observation that
starting the async resume of the children of a device after resuming
the parent is likely to produce less scheduling and memory management
noise than starting it upfront while at the same time it should not
increase the resume duration substantially.

Accordingly, modify the code to start the async resume of the device's
children when the processing of the parent has been completed in each
stage of device resume and only start async resume upfront for devices
without parents.

Also make it check if a given device can be resumed asynchronously
before starting the synchronous resume of it in case it will have to
wait for another that is already resuming asynchronously.

In addition to making the async resume of devices more friendly to
systems with relatively less computing resources, this change is also
preliminary for analogous changes in the suspend path.

On the systems where it has been tested, this change by itself does
not affect the overall system resume duration in a measurable way.

Link: https://lore.kernel.org/linux-pm/20241114220921.2529905-1-saravanak@google.com/ [1]
Suggested-by: Saravana Kannan <saravanak@google.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Link: https://patch.msgid.link/22630663.EfDdHjke4D@rjwysocki.net
2025-04-22 13:57:00 +02:00
Dave Hansen
4e2c719782 x86/cpu: Help users notice when running old Intel microcode
Old microcode is bad for users and for kernel developers.

For users, it exposes them to known fixed security and/or functional
issues. These obviously rarely result in instant dumpster fires in
every environment. But it is as important to keep your microcode up
to date as it is to keep your kernel up to date.

Old microcode also makes kernels harder to debug. A developer looking
at an oops need to consider kernel bugs, known CPU issues and unknown
CPU issues as possible causes. If they know the microcode is up to
date, they can mostly eliminate known CPU issues as the cause.

Make it easier to tell if CPU microcode is out of date. Add a list
of released microcode. If the loaded microcode is older than the
release, tell users in a place that folks can find it:

	/sys/devices/system/cpu/vulnerabilities/old_microcode

Tell kernel kernel developers about it with the existing taint
flag:

	TAINT_CPU_OUT_OF_SPEC

== Discussion ==

When a user reports a potential kernel issue, it is very common
to ask them to reproduce the issue on mainline. Running mainline,
they will (independently from the distro) acquire a more up-to-date
microcode version list. If their microcode is old, they will
get a warning about the taint and kernel developers can take that
into consideration when debugging.

Just like any other entry in "vulnerabilities/", users are free to
make their own assessment of their exposure.

== Microcode Revision Discussion ==

The microcode versions in the table were generated from the Intel
microcode git repo:

	8ac9378a8487 ("microcode-20241112 Release")

which as of this writing lags behind the latest microcode-20250211.

It can be argued that the versions that the kernel picks to call "old"
should be a revision or two old. Which specific version is picked is
less important to me than picking *a* version and enforcing it.

This repository contains only microcode versions that Intel has deemed
to be OS-loadable. It is quite possible that the BIOS has loaded a
newer microcode than the latest in this repo. If this happens, the
system is considered to have new microcode, not old.

Specifically, the sysfs file and taint flag answer the question:

	Is the CPU running on the latest OS-loadable microcode,
	or something even later that the BIOS loaded?

In other words, Intel never publishes an authoritative list of CPUs
and latest microcode revisions. Until it does, this is the best that
Linux can do.

Also note that the "intel-ucode-defs.h" file is simple, ugly and
has lots of magic numbers. That's on purpose and should allow a
single file to be shared across lots of stable kernel regardless of if
they have the new "VFM" infrastructure or not. It was generated with
a dumb script.

== FAQ ==

Q: Does this tell me if my system is secure or insecure?
A: No. It only tells you if your microcode was old when the
   system booted.

Q: Should the kernel warn if the microcode list itself is too old?
A: No. New kernels will get new microcode lists, both mainline
   and stable. The only way to have an old list is to be running
   an old kernel in which case you have bigger problems.

Q: Is this for security or functional issues?
A: Both.

Q: If a given microcode update only has functional problems but
   no security issues, will it be considered old?
A: Yes. All microcode image versions within a microcode release
   are treated identically. Intel appears to make security
   updates without disclosing them in the release notes.  Thus,
   all updates are considered to be security-relevant.

Q: Who runs old microcode?
A: Anybody with an old distro. This happens all the time inside
   of Intel where there are lots of weird systems in labs that
   might not be getting regular distro updates and might also
   be running rather exotic microcode images.

Q: If I update my microcode after booting will it stop saying
   "Vulnerable"?
A: No. Just like all the other vulnerabilies, you need to
   reboot before the kernel will reassess your vulnerability.

Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Cc: "Ahmed S. Darwish" <darwi@linutronix.de>
Cc: Andrew Cooper <andrew.cooper3@citrix.com>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: John Ogness <john.ogness@linutronix.de>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Juergen Gross <jgross@suse.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Kees Cook <keescook@chromium.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Link: https://lore.kernel.org/all/20250421195659.CF426C07%40davehans-spike.ostc.intel.com
(cherry picked from commit 9127865b15eb0a1bd05ad7efe29489c44394bdc1)
2025-04-22 08:33:52 +02:00
Shyam Saini
f95bbfe185 drivers: base: handle module_kobject creation
module_add_driver() relies on module_kset list for
/sys/module/<built-in-module>/drivers directory creation.

Since,
commit 96a1a2412a ("kernel/params.c: defer most of param_sysfs_init() to late_initcall time")
drivers which are initialized from subsys_initcall() or any other
higher precedence initcall couldn't find the related kobject entry
in the module_kset list because module_kset is not fully populated
by the time module_add_driver() refers it. As a consequence,
module_add_driver() returns early without calling make_driver_name().
Therefore, /sys/module/<built-in-module>/drivers is never created.

Fix this issue by letting module_add_driver() handle module_kobject
creation itself.

Fixes: 96a1a2412a ("kernel/params.c: defer most of param_sysfs_init() to late_initcall time")
Cc: stable@vger.kernel.org # requires all other patches from the series
Suggested-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Signed-off-by: Shyam Saini <shyamsaini@linux.microsoft.com>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Link: https://lore.kernel.org/r/20250227184930.34163-5-shyamsaini@linux.microsoft.com
Signed-off-by: Petr Pavlu <petr.pavlu@suse.com>
2025-04-16 15:10:55 +02:00
Zijun Hu
31e4e12e0e software node: Correct a OOB check in software_node_get_reference_args()
software_node_get_reference_args() wants to get @index-th element, so
the property value requires at least '(index + 1) * sizeof(*ref)' bytes
but that can not be guaranteed by current OOB check, and may cause OOB
for malformed property.

Fix by using as OOB check '((index + 1) * sizeof(*ref) > prop->length)'.

Reviewed-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Zijun Hu <quic_zijuhu@quicinc.com>
Link: https://lore.kernel.org/r/20250414-fix_swnode-v2-1-9c9e6ae11eab@quicinc.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2025-04-15 18:24:16 +02:00
Gavin Shan
b9792abb76 drivers/base/memory: Avoid overhead from for_each_present_section_nr()
for_each_present_section_nr() was introduced to add_boot_memory_block()
by commit 61659efdb3 ("drivers/base/memory: improve add_boot_memory_block()").
It causes unnecessary overhead when the present sections are really
sparse. next_present_section_nr() called by the macro to find the next
present section, which is far away from the spanning sections in the
specified block. Too much time consumed by next_present_section_nr()
in this case, which can lead to softlockup as observed by Aditya Gupta
on IBM Power10 machine.

  watchdog: BUG: soft lockup - CPU#248 stuck for 22s! [swapper/248:1]
  Modules linked in:
  CPU: 248 UID: 0 PID: 1 Comm: swapper/248 Not tainted 6.15.0-rc1-next-20250408 #1 VOLUNTARY
  Hardware name: 9105-22A POWER10 (raw) 0x800200 opal:v7.1-107-gfda75d121942 PowerNV
  NIP:  c00000000209218c LR: c000000002092204 CTR: 0000000000000000
  REGS: c00040000418fa30 TRAP: 0900   Not tainted  (6.15.0-rc1-next-20250408)
  MSR:  9000000002009033 <SF,HV,VEC,EE,ME,IR,DR,RI,LE>  CR: 28000428  XER: 00000000
  CFAR: 0000000000000000 IRQMASK: 0
  GPR00: c000000002092204 c00040000418fcd0 c000000001b08100 0000000000000040
  GPR04: 0000000000013e00 c000c03ffebabb00 0000000000c03fff c000400fff587f80
  GPR08: 0000000000000000 00000000001196f7 0000000000000000 0000000028000428
  GPR12: 0000000000000000 c000000002e80000 c00000000001007c 0000000000000000
  GPR16: 0000000000000000 0000000000000000 0000000000000000 0000000000000000
  GPR20: 0000000000000000 0000000000000000 0000000000000000 0000000000000000
  GPR24: 0000000000000000 0000000000000000 0000000000000000 0000000000000000
  GPR28: c000000002df7f70 0000000000013dc0 c0000000011dd898 0000000008000000
  NIP [c00000000209218c] memory_dev_init+0x114/0x1e0
  LR [c000000002092204] memory_dev_init+0x18c/0x1e0
  Call Trace:
  [c00040000418fcd0] [c000000002092204] memory_dev_init+0x18c/0x1e0 (unreliable)
  [c00040000418fd50] [c000000002091348] driver_init+0x78/0xa4
  [c00040000418fd70] [c0000000020063ac] kernel_init_freeable+0x22c/0x370
  [c00040000418fde0] [c0000000000100a8] kernel_init+0x34/0x25c
  [c00040000418fe50] [c00000000000cd94] ret_from_kernel_user_thread+0x14/0x1c

Avoid the overhead by folding for_each_present_section_nr() to the outer
loop. add_boot_memory_block() is dropped after that.

Fixes: 61659efdb3 ("drivers/base/memory: improve add_boot_memory_block()")
Closes: https://lore.kernel.org/linux-mm/20250409180344.477916-1-adityag@linux.ibm.com
Reported-by: Aditya Gupta <adityag@linux.ibm.com>
Signed-off-by: Gavin Shan <gshan@redhat.com>
Acked-by: Oscar Salvador <osalvador@suse.de>
Tested-by: Aditya Gupta <adityag@linux.ibm.com>
Acked-by: David Hildenbrand <david@redhat.com>
Link: https://lore.kernel.org/r/20250410125110.1232329-1-gshan@redhat.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2025-04-15 18:19:49 +02:00
Lizhi Xu
bc2c46426f software node: Prevent link creation failure from causing kobj reference count imbalance
syzbot reported a uaf in software_node_notify_remove. [1]

When any of the two sysfs_create_link() in software_node_notify() fails,
the swnode->kobj reference count will not increase normally, which will
cause swnode to be released incorrectly due to the imbalance of kobj reference
count when executing software_node_notify_remove().

Increase the reference count of kobj before creating the link to avoid uaf.

[1]
BUG: KASAN: slab-use-after-free in software_node_notify_remove+0x1bc/0x1c0 drivers/base/swnode.c:1108
Read of size 1 at addr ffff888033c08908 by task syz-executor105/5844
Freed by task 5844:
 software_node_notify_remove+0x159/0x1c0 drivers/base/swnode.c:1106
 device_platform_notify_remove drivers/base/core.c:2387 [inline]

Fixes: 9eb59204d5 ("iommufd/selftest: Add set_dev_pasid in mock iommu")
Reported-by: syzbot+2ff22910687ee0dfd48e@syzkaller.appspotmail.com
Closes: https://syzkaller.appspot.com/bug?extid=2ff22910687ee0dfd48e
Tested-by: syzbot+2ff22910687ee0dfd48e@syzkaller.appspotmail.com
Signed-off-by: Lizhi Xu <lizhi.xu@windriver.com>
Reviewed-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/r/20250414071123.1228331-1-lizhi.xu@windriver.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2025-04-15 18:15:14 +02:00
Leon Romanovsky
10076ae013 drivers/base: Extend documentation with preferred way to use auxbus
Document the preferred way to use auxiliary bus.

Signed-off-by: Leon Romanovsky <leon@kernel.org>
Link: https://lore.kernel.org/r/206e8c249f630abd3661deb36b84b26282241040.1743510317.git.leon@kernel.org
[ reworded the text a bit - gregkh ]
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2025-04-15 18:10:28 +02:00
Raag Jadav
f407a8a28a devres: simplify devm_kstrdup() using devm_kmemdup()
devm_kstrdup() logic pretty much reflects devm_kmemdup() for strings,
so just reuse it.

Signed-off-by: Raag Jadav <raag.jadav@intel.com>
Link: https://lore.kernel.org/r/20250409105432.1852355-1-raag.jadav@intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2025-04-15 18:06:30 +02:00
Woody Zhang
8c016bc306 platform: replace magic number with macro PLATFORM_DEVID_NONE
Replace magic number with PLATFORM_DEVID_NONE to make it more
informative.

Signed-off-by: Woody Zhang <woodyzhang666@gmail.com>
Link: https://lore.kernel.org/r/20250330103627.2370771-2-woodyzhang666@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2025-04-15 18:06:08 +02:00
Johan Hovold
5bcca36898 component: do not try to unbind unbound components
Error handling is apparently hard and driver authors often get it wrong.

Continue to warn but do not try to unbind components that have never
been bound in order to avoid crashing systems where such a buggy
teardown path is hit.

Signed-off-by: Johan Hovold <johan+linaro@kernel.org>
Link: https://lore.kernel.org/r/20250228081824.4640-1-johan+linaro@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2025-04-15 18:05:40 +02:00
Dmitry Torokhov
18daa52418 driver core: fix potential NULL pointer dereference in dev_uevent()
If userspace reads "uevent" device attribute at the same time as another
threads unbinds the device from its driver, change to dev->driver from a
valid pointer to NULL may result in crash. Fix this by using READ_ONCE()
when fetching the pointer, and take bus' drivers klist lock to make sure
driver instance will not disappear while we access it.

Use WRITE_ONCE() when setting the driver pointer to ensure there is no
tearing.

Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Reviewed-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
Link: https://lore.kernel.org/r/20250311052417.1846985-3-dmitry.torokhov@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2025-04-15 17:04:35 +02:00
Dmitry Torokhov
04d3e5461c driver core: introduce device_set_driver() helper
In preparation to closing a race when reading driver pointer in
dev_uevent() code, instead of setting device->driver pointer directly
introduce device_set_driver() helper.

Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Reviewed-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
Link: https://lore.kernel.org/r/20250311052417.1846985-2-dmitry.torokhov@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2025-04-15 17:04:35 +02:00
Dmitry Torokhov
dc1771f718 Revert "drivers: core: synchronize really_probe() and dev_uevent()"
This reverts commit c0a40097f0.

Probing a device can take arbitrary long time. In the field we observed
that, for example, probing a bad micro-SD cards in an external USB card
reader (or maybe cards were good but cables were flaky) sometimes takes
longer than 2 minutes due to multiple retries at various levels of the
stack. We can not block uevent_show() method for that long because udev
is reading that attribute very often and that blocks udev and interferes
with booting of the system.

The change that introduced locking was concerned with dev_uevent()
racing with unbinding the driver. However we can handle it without
locking (which will be done in subsequent patch).

There was also claim that synchronization with probe() is needed to
properly load USB drivers, however this is a red herring: the change
adding the lock was introduced in May of last year and USB loading and
probing worked properly for many years before that.

Revert the harmful locking.

Cc: stable@vger.kernel.org
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Reviewed-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
Link: https://lore.kernel.org/r/20250311052417.1846985-1-dmitry.torokhov@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2025-04-15 17:04:35 +02:00
Jerome Brunet
eaa0d30216 driver core: auxiliary bus: add device creation helpers
Add helper functions to create a device on the auxiliary bus.

This is meant for fairly simple usage of the auxiliary bus, to avoid having
the same code repeated in the different drivers.

Suggested-by: Stephen Boyd <sboyd@kernel.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Jerome Brunet <jbrunet@baylibre.com>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Reviewed-by: Ira Weiny <ira.weiny@intel.com>
Link: https://lore.kernel.org/r/20250218-aux-device-create-helper-v4-1-c3d7dfdea2e6@baylibre.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2025-04-15 15:20:37 +02:00
Kurt Borja
d487858ebf driver core: faux: Add sysfs groups after probing
Manually add sysfs groups after the faux_device_ops's probe succeeds.
Likewise remove these groups just before calling the faux_devices_ops's
remove callback. This approach approximates the order in which the
driver core adds and removes the driver's .dev_groups of a device to
avoid lifetime issues.

This is done specifically to avoid using the device's .groups member,
which adds groups before the device is even registered to the bus.

This lets consumers of this API, initialize resources on the .probe
callback and then use them inside is_visible/show/store methods, through
dev_get_drvdata() without races.

Cc: Rafael J. Wysocki <rafael@kernel.org>
Cc: Danilo Krummrich <dakr@kernel.org>
Signed-off-by: Kurt Borja <kuurtb@gmail.com>
Link: https://lore.kernel.org/r/20250327-faux-groups-v2-1-745a3cf0bc16@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2025-04-15 14:16:08 +02:00
Andy Shevchenko
1490cbb9db device property: Split fwnode_get_child_node_count()
The new helper is introduced to allow counting the child firmware nodes
of their parent without requiring a device to be passed. This also makes
the fwnode and device property API more symmetrical with the rest.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: "Rafael J. Wysocki" <rafael@kernel.org>
Reviewed-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Link: https://lore.kernel.org/r/20250310150835.3139322-2-andriy.shevchenko@linux.intel.com
Signed-off-by: Lee Jones <lee@kernel.org>
2025-04-10 10:12:14 +01:00
Thomas Gleixner
8fa7292fee treewide: Switch/rename to timer_delete[_sync]()
timer_delete[_sync]() replaces del_timer[_sync](). Convert the whole tree
over and remove the historical wrapper inlines.

Conversion was done with coccinelle plus manual fixups where necessary.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2025-04-05 10:30:12 +02:00
Linus Torvalds
01ecadbe09 Merge tag 'cxl-for-6.15' of git://git.kernel.org/pub/scm/linux/kernel/git/cxl/cxl
Pull Compute Express Link (CXL)  updates from Dave Jiang:

 - Add support for Global Persistent Flush (GPF)

 - Cleanup of DPA partition metadata handling:
     - Remove the CXL_DECODER_MIXED enum that's not needed anymore
     - Introduce helpers to access resource and perf meta data
     - Introduce 'struct cxl_dpa_partition' and 'struct cxl_range_info'
     - Make cxl_dpa_alloc() DPA partition number agnostic
     - Remove cxl_decoder_mode
     - Cleanup partition size and perf helpers

 - Remove unused CXL partition values

 - Add logging support for CXL CPER endpoint and port protocol errors:
     - Prefix protocol error struct and function names with cxl_
     - Move protocol error definitions and structures to a common location
     - Remove drivers/firmware/efi/cper_cxl.h to include/linux/cper.h
     - Add support in GHES to process CXL CPER protocol errors
     - Process CXL CPER protocol errors
     - Add trace logging for CXL PCIe port RAS errors

 - Remove redundant gp_port init

 - Add validation of cxl device serial number

 - CXL ABI documentation updates/fixups

 - A series that uses guard() to clean up open coded mutex lockings and
   remove gotos for error handling.

 - Some followup patches to support dirty shutdown accounting:
     - Add helper to retrieve DVSEC offset for dirty shutdown registers
     - Rename cxl_get_dirty_shutdown() to cxl_arm_dirty_shutdown()
     - Add support for dirty shutdown count via sysfs
     - cxl_test support for dirty shutdown

 - A series to support CXL mailbox Features commands.

   Mostly in preparation for CXL EDAC code to utilize the Features
   commands. It's also in preparation for CXL fwctl support to utilize
   the CXL Features. The commands include "Get Supported Features", "Get
   Feature", and "Set Feature".

 - A series to support extended linear cache support described by the
   ACPI HMAT table.

   The addition helps enumerate the cache and also provides additional
   RAS reporting support for configuration with extended linear cache.
   (and related fixes for the series).

 - An update to cxl_test to support a 3-way capable CFMWS

 - A documentation fix to remove unused "mixed mode"

* tag 'cxl-for-6.15' of git://git.kernel.org/pub/scm/linux/kernel/git/cxl/cxl: (39 commits)
  cxl/region: Fix the first aliased address miscalculation
  cxl/region: Quiet some dev_warn()s in extended linear cache setup
  cxl/Documentation: Remove 'mixed' from sysfs mode doc
  cxl: Fix warning from emitting resource_size_t as long long int on 32bit systems
  cxl/test: Define a CFMWS capable of a 3 way HB interleave
  cxl/mem: Do not return error if CONFIG_CXL_MCE unset
  tools/testing/cxl: Set Shutdown State support
  cxl/pmem: Export dirty shutdown count via sysfs
  cxl/pmem: Rename cxl_dirty_shutdown_state()
  cxl/pci: Introduce cxl_gpf_get_dvsec()
  cxl/pci: Support Global Persistent Flush (GPF)
  cxl: Document missing sysfs files
  cxl: Plug typos in ABI doc
  cxl/pmem: debug invalid serial number data
  cxl/cdat: Remove redundant gp_port initialization
  cxl/memdev: Remove unused partition values
  cxl/region: Drop goto pattern of construct_region()
  cxl/region: Drop goto pattern in cxl_dax_region_alloc()
  cxl/core: Use guard() to drop goto pattern of cxl_dpa_alloc()
  cxl/core: Use guard() to drop the goto pattern of cxl_dpa_free()
  ...
2025-04-02 20:04:43 -07:00
Linus Torvalds
2cd5769fb0 Merge tag 'driver-core-6.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core
Pull driver core updatesk from Greg KH:
 "Here is the big set of driver core updates for 6.15-rc1. Lots of stuff
  happened this development cycle, including:

   - kernfs scaling changes to make it even faster thanks to rcu

   - bin_attribute constify work in many subsystems

   - faux bus minor tweaks for the rust bindings

   - rust binding updates for driver core, pci, and platform busses,
     making more functionaliy available to rust drivers. These are all
     due to people actually trying to use the bindings that were in
     6.14.

   - make Rafael and Danilo full co-maintainers of the driver core
     codebase

   - other minor fixes and updates"

* tag 'driver-core-6.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (52 commits)
  rust: platform: require Send for Driver trait implementers
  rust: pci: require Send for Driver trait implementers
  rust: platform: impl Send + Sync for platform::Device
  rust: pci: impl Send + Sync for pci::Device
  rust: platform: fix unrestricted &mut platform::Device
  rust: pci: fix unrestricted &mut pci::Device
  rust: device: implement device context marker
  rust: pci: use to_result() in enable_device_mem()
  MAINTAINERS: driver core: mark Rafael and Danilo as co-maintainers
  rust/kernel/faux: mark Registration methods inline
  driver core: faux: only create the device if probe() succeeds
  rust/faux: Add missing parent argument to Registration::new()
  rust/faux: Drop #[repr(transparent)] from faux::Registration
  rust: io: fix devres test with new io accessor functions
  rust: io: rename `io::Io` accessors
  kernfs: Move dput() outside of the RCU section.
  efi: rci2: mark bin_attribute as __ro_after_init
  rapidio: constify 'struct bin_attribute'
  firmware: qemu_fw_cfg: constify 'struct bin_attribute'
  powerpc/perf/hv-24x7: Constify 'struct bin_attribute'
  ...
2025-04-01 11:02:03 -07:00
Linus Torvalds
eb0ece1602 Merge tag 'mm-stable-2025-03-30-16-52' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Pull MM updates from Andrew Morton:

 - The series "Enable strict percpu address space checks" from Uros
   Bizjak uses x86 named address space qualifiers to provide
   compile-time checking of percpu area accesses.

   This has caused a small amount of fallout - two or three issues were
   reported. In all cases the calling code was found to be incorrect.

 - The series "Some cleanup for memcg" from Chen Ridong implements some
   relatively monir cleanups for the memcontrol code.

 - The series "mm: fixes for device-exclusive entries (hmm)" from David
   Hildenbrand fixes a boatload of issues which David found then using
   device-exclusive PTE entries when THP is enabled. More work is
   needed, but this makes thins better - our own HMM selftests now
   succeed.

 - The series "mm: zswap: remove z3fold and zbud" from Yosry Ahmed
   remove the z3fold and zbud implementations. They have been deprecated
   for half a year and nobody has complained.

 - The series "mm: further simplify VMA merge operation" from Lorenzo
   Stoakes implements numerous simplifications in this area. No runtime
   effects are anticipated.

 - The series "mm/madvise: remove redundant mmap_lock operations from
   process_madvise()" from SeongJae Park rationalizes the locking in the
   madvise() implementation. Performance gains of 20-25% were observed
   in one MADV_DONTNEED microbenchmark.

 - The series "Tiny cleanup and improvements about SWAP code" from
   Baoquan He contains a number of touchups to issues which Baoquan
   noticed when working on the swap code.

 - The series "mm: kmemleak: Usability improvements" from Catalin
   Marinas implements a couple of improvements to the kmemleak
   user-visible output.

 - The series "mm/damon/paddr: fix large folios access and schemes
   handling" from Usama Arif provides a couple of fixes for DAMON's
   handling of large folios.

 - The series "mm/damon/core: fix wrong and/or useless damos_walk()
   behaviors" from SeongJae Park fixes a few issues with the accuracy of
   kdamond's walking of DAMON regions.

 - The series "expose mapping wrprotect, fix fb_defio use" from Lorenzo
   Stoakes changes the interaction between framebuffer deferred-io and
   core MM. No functional changes are anticipated - this is preparatory
   work for the future removal of page structure fields.

 - The series "mm/damon: add support for hugepage_size DAMOS filter"
   from Usama Arif adds a DAMOS filter which permits the filtering by
   huge page sizes.

 - The series "mm: permit guard regions for file-backed/shmem mappings"
   from Lorenzo Stoakes extends the guard region feature from its
   present "anon mappings only" state. The feature now covers shmem and
   file-backed mappings.

 - The series "mm: batched unmap lazyfree large folios during
   reclamation" from Barry Song cleans up and speeds up the unmapping
   for pte-mapped large folios.

 - The series "reimplement per-vma lock as a refcount" from Suren
   Baghdasaryan puts the vm_lock back into the vma. Our reasons for
   pulling it out were largely bogus and that change made the code more
   messy. This patchset provides small (0-10%) improvements on one
   microbenchmark.

 - The series "Docs/mm/damon: misc DAMOS filters documentation fixes and
   improves" from SeongJae Park does some maintenance work on the DAMON
   docs.

 - The series "hugetlb/CMA improvements for large systems" from Frank
   van der Linden addresses a pile of issues which have been observed
   when using CMA on large machines.

 - The series "mm/damon: introduce DAMOS filter type for unmapped pages"
   from SeongJae Park enables users of DMAON/DAMOS to filter my the
   page's mapped/unmapped status.

 - The series "zsmalloc/zram: there be preemption" from Sergey
   Senozhatsky teaches zram to run its compression and decompression
   operations preemptibly.

 - The series "selftests/mm: Some cleanups from trying to run them" from
   Brendan Jackman fixes a pile of unrelated issues which Brendan
   encountered while runnimg our selftests.

 - The series "fs/proc/task_mmu: add guard region bit to pagemap" from
   Lorenzo Stoakes permits userspace to use /proc/pid/pagemap to
   determine whether a particular page is a guard page.

 - The series "mm, swap: remove swap slot cache" from Kairui Song
   removes the swap slot cache from the allocation path - it simply
   wasn't being effective.

 - The series "mm: cleanups for device-exclusive entries (hmm)" from
   David Hildenbrand implements a number of unrelated cleanups in this
   code.

 - The series "mm: Rework generic PTDUMP configs" from Anshuman Khandual
   implements a number of preparatoty cleanups to the GENERIC_PTDUMP
   Kconfig logic.

 - The series "mm/damon: auto-tune aggregation interval" from SeongJae
   Park implements a feedback-driven automatic tuning feature for
   DAMON's aggregation interval tuning.

 - The series "Fix lazy mmu mode" from Ryan Roberts fixes some issues in
   powerpc, sparc and x86 lazy MMU implementations. Ryan did this in
   preparation for implementing lazy mmu mode for arm64 to optimize
   vmalloc.

 - The series "mm/page_alloc: Some clarifications for migratetype
   fallback" from Brendan Jackman reworks some commentary to make the
   code easier to follow.

 - The series "page_counter cleanup and size reduction" from Shakeel
   Butt cleans up the page_counter code and fixes a size increase which
   we accidentally added late last year.

 - The series "Add a command line option that enables control of how
   many threads should be used to allocate huge pages" from Thomas
   Prescher does that. It allows the careful operator to significantly
   reduce boot time by tuning the parallalization of huge page
   initialization.

 - The series "Fix calculations in trace_balance_dirty_pages() for cgwb"
   from Tang Yizhou fixes the tracing output from the dirty page
   balancing code.

 - The series "mm/damon: make allow filters after reject filters useful
   and intuitive" from SeongJae Park improves the handling of allow and
   reject filters. Behaviour is made more consistent and the documention
   is updated accordingly.

 - The series "Switch zswap to object read/write APIs" from Yosry Ahmed
   updates zswap to the new object read/write APIs and thus permits the
   removal of some legacy code from zpool and zsmalloc.

 - The series "Some trivial cleanups for shmem" from Baolin Wang does as
   it claims.

 - The series "fs/dax: Fix ZONE_DEVICE page reference counts" from
   Alistair Popple regularizes the weird ZONE_DEVICE page refcount
   handling in DAX, permittig the removal of a number of special-case
   checks.

 - The series "refactor mremap and fix bug" from Lorenzo Stoakes is a
   preparatoty refactoring and cleanup of the mremap() code.

 - The series "mm: MM owner tracking for large folios (!hugetlb) +
   CONFIG_NO_PAGE_MAPCOUNT" from David Hildenbrand reworks the manner in
   which we determine whether a large folio is known to be mapped
   exclusively into a single MM.

 - The series "mm/damon: add sysfs dirs for managing DAMOS filters based
   on handling layers" from SeongJae Park adds a couple of new sysfs
   directories to ease the management of DAMON/DAMOS filters.

 - The series "arch, mm: reduce code duplication in mem_init()" from
   Mike Rapoport consolidates many per-arch implementations of
   mem_init() into code generic code, where that is practical.

 - The series "mm/damon/sysfs: commit parameters online via
   damon_call()" from SeongJae Park continues the cleaning up of sysfs
   access to DAMON internal data.

 - The series "mm: page_ext: Introduce new iteration API" from Luiz
   Capitulino reworks the page_ext initialization to fix a boot-time
   crash which was observed with an unusual combination of compile and
   cmdline options.

 - The series "Buddy allocator like (or non-uniform) folio split" from
   Zi Yan reworks the code to split a folio into smaller folios. The
   main benefit is lessened memory consumption: fewer post-split folios
   are generated.

 - The series "Minimize xa_node allocation during xarry split" from Zi
   Yan reduces the number of xarray xa_nodes which are generated during
   an xarray split.

 - The series "drivers/base/memory: Two cleanups" from Gavin Shan
   performs some maintenance work on the drivers/base/memory code.

 - The series "Add tracepoints for lowmem reserves, watermarks and
   totalreserve_pages" from Martin Liu adds some more tracepoints to the
   page allocator code.

 - The series "mm/madvise: cleanup requests validations and
   classifications" from SeongJae Park cleans up some warts which
   SeongJae observed during his earlier madvise work.

 - The series "mm/hwpoison: Fix regressions in memory failure handling"
   from Shuai Xue addresses two quite serious regressions which Shuai
   has observed in the memory-failure implementation.

 - The series "mm: reliable huge page allocator" from Johannes Weiner
   makes huge page allocations cheaper and more reliable by reducing
   fragmentation.

 - The series "Minor memcg cleanups & prep for memdescs" from Matthew
   Wilcox is preparatory work for the future implementation of memdescs.

 - The series "track memory used by balloon drivers" from Nico Pache
   introduces a way to track memory used by our various balloon drivers.

 - The series "mm/damon: introduce DAMOS filter type for active pages"
   from Nhat Pham permits users to filter for active/inactive pages,
   separately for file and anon pages.

 - The series "Adding Proactive Memory Reclaim Statistics" from Hao Jia
   separates the proactive reclaim statistics from the direct reclaim
   statistics.

 - The series "mm/vmscan: don't try to reclaim hwpoison folio" from
   Jinjiang Tu fixes our handling of hwpoisoned pages within the reclaim
   code.

* tag 'mm-stable-2025-03-30-16-52' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (431 commits)
  mm/page_alloc: remove unnecessary __maybe_unused in order_to_pindex()
  x86/mm: restore early initialization of high_memory for 32-bits
  mm/vmscan: don't try to reclaim hwpoison folio
  mm/hwpoison: introduce folio_contain_hwpoisoned_page() helper
  cgroup: docs: add pswpin and pswpout items in cgroup v2 doc
  mm: vmscan: split proactive reclaim statistics from direct reclaim statistics
  selftests/mm: speed up split_huge_page_test
  selftests/mm: uffd-unit-tests support for hugepages > 2M
  docs/mm/damon/design: document active DAMOS filter type
  mm/damon: implement a new DAMOS filter type for active pages
  fs/dax: don't disassociate zero page entries
  MM documentation: add "Unaccepted" meminfo entry
  selftests/mm: add commentary about 9pfs bugs
  fork: use __vmalloc_node() for stack allocation
  docs/mm: Physical Memory: Populate the "Zones" section
  xen: balloon: update the NR_BALLOON_PAGES state
  hv_balloon: update the NR_BALLOON_PAGES state
  balloon_compaction: update the NR_BALLOON_PAGES state
  meminfo: add a per node counter for balloon drivers
  mm: remove references to folio in __memcg_kmem_uncharge_page()
  ...
2025-04-01 09:29:18 -07:00
Linus Torvalds
054b7477e3 Merge tag 'regmap-v6.15' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap
Pull regmap updates from Mark Brown:
 "Only a couple of small patches this release, one refactoring struct
  regmap to pack it more efficiently and another which makes our way of
  setting all bits consistent in the regmap-irq code"

* tag 'regmap-v6.15' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap:
  regmap: irq: Use one way of setting all bits in the register
  regmap: Reorder 'struct regmap'
2025-03-29 14:31:39 -07:00
Linus Torvalds
7d06015d93 Merge tag 'pci-v6.15-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/pci/pci
Pull pci updates from Bjorn Helgaas:
 "Enumeration:

   - Enable Configuration RRS SV, which makes device readiness visible,
     early instead of during child bus scanning (Bjorn Helgaas)

   - Log debug messages about reset methods being used (Bjorn Helgaas)

   - Avoid reset when it has been disabled via sysfs (Nishanth
     Aravamudan)

   - Add common pci-ep-bus.yaml schema for exporting several peripherals
     of a single PCI function via devicetree (Andrea della Porta)

   - Create DT nodes for PCI host bridges to enable loading device tree
     overlays to create platform devices for PCI devices that have
     several features that require multiple drivers (Herve Codina)

  Resource management:

   - Enlarge devres table[] to accommodate bridge windows, ROM, IOV
     BARs, etc., and validate BAR index in devres interfaces (Philipp
     Stanner)

   - Fix typo that repeatedly distributed resources to a bridge instead
     of iterating over subordinate bridges, which resulted in too little
     space to assign some BARs (Kai-Heng Feng)

   - Relax bridge window tail sizing for optional resources, e.g., IOV
     BARs, to avoid failures when removing and re-adding devices (Ilpo
     Järvinen)

   - Allow drivers to enable devices even if we haven't assigned
     optional IOV resources to them (Ilpo Järvinen)

   - Rework handling of optional resources (IOV BARs, ROMs) to reduce
     failures if we can't allocate them (Ilpo Järvinen)

   - Fix a NULL dereference in the SR-IOV VF creation error path (Shay
     Drory)

   - Fix s390 mmio_read/write syscalls, which didn't cause page faults
     in some cases, which broke vfio-pci lazy mapping on first access
     (Niklas Schnelle)

   - Add pdev->non_mappable_bars to replace CONFIG_VFIO_PCI_MMAP, which
     was disabled only for s390 (Niklas Schnelle)

   - Support mmap of PCI resources on s390 except for ISM devices
     (Niklas Schnelle)

  ASPM:

   - Delay pcie_link_state deallocation to avoid dangling pointers that
     cause invalid references during hot-unplug (Daniel Stodden)

  Power management:

   - Allow PCI bridges to go to D3Hot when suspending on all non-x86
     systems (Manivannan Sadhasivam)

  Power control:

   - Create pwrctrl devices in pci_scan_device() to make it more
     symmetric with pci_pwrctrl_unregister() and make pwrctrl devices
     for PCI bridges possible (Manivannan Sadhasivam)

   - Unregister pwrctrl devices in pci_destroy_dev() so DOE, ASPM, etc.
     can still access devices after pci_stop_dev() (Manivannan
     Sadhasivam)

   - If there's a pwrctrl device for a PCI device, skip scanning it
     because the pwrctrl core will rescan the bus after the device is
     powered on (Manivannan Sadhasivam)

   - Add a pwrctrl driver for PCI slots based on voltage regulators
     described via devicetree (Manivannan Sadhasivam)

  Bandwidth control:

   - Add set_pcie_speed.sh to TEST_PROGS to fix issue when executing the
     set_pcie_cooling_state.sh test case (Yi Lai)

   - Avoid a NULL pointer dereference when we run out of bus numbers to
     assign for a bridge secondary bus (Lukas Wunner)

  Hotplug:

   - Drop superfluous pci_hotplug_slot_list, try_module_get() calls, and
     NULL pointer checks (Lukas Wunner)

   - Drop shpchp module init/exit logging, replace shpchp dbg() with
     ctrl_dbg(), and remove unused dbg(), err(), info(), warn() wrappers
     (Ilpo Järvinen)

   - Drop 'shpchp_debug' module parameter in favor of standard dynamic
     debugging (Ilpo Järvinen)

   - Drop unused cpcihp .get_power(), .set_power() function pointers
     (Guilherme Giacomo Simoes)

   - Disable hotplug interrupts in portdrv only when pciehp is not
     enabled to avoid issuing two hotplug commands too close together
     (Feng Tang)

   - Skip pciehp 'device replaced' check if the device has been removed
     to address a deadlock when resuming after a device was removed
     during system sleep (Lukas Wunner)

   - Don't enable pciehp hotplug interupt when resuming in poll mode
     (Ilpo Järvinen)

  Virtualization:

   - Fix bugs in 'pci=config_acs=' kernel command line parameter (Tushar
     Dave)

  DOE:

   - Expose supported DOE features via sysfs (Alistair Francis)

   - Allow DOE support to be enabled even if CXL isn't enabled (Alistair
     Francis)

  Endpoint framework:

   - Convert PCI device data so pci-epf-test works correctly on
     big-endian endpoint systems (Niklas Cassel)

   - Add BAR_RESIZABLE type to endpoint framework and add DWC core
     support for EPF drivers to set BAR_RESIZABLE type and size (Niklas
     Cassel)

   - Fix pci-epf-test double free that causes an oops if the host
     reboots and PERST# deassertion restarts endpoint BAR allocation
     (Christian Bruel)

   - Fix endpoint BAR testing so tests can skip disabled BARs instead of
     reporting them as failures (Niklas Cassel)

   - Widen endpoint test BAR size variable to accommodate BARs larger
     than INT_MAX (Niklas Cassel)

   - Remove unused tools 'pci' build target left over after moving tests
     to tools/testing/selftests/pci_endpoint (Jianfeng Liu)

  Altera PCIe controller driver:

   - Add DT binding and driver support for Agilex family (P-Tile,
     F-Tile, R-Tile) (Matthew Gerlach and D M, Sharath Kumar)

  AMD MDB PCIe controller driver:

   - Add DT binding and driver for AMD MDB (Multimedia DMA Bridge)
     (Thippeswamy Havalige)

  Broadcom STB PCIe controller driver:

   - Add BCM2712 MSI-X DT binding and interrupt controller drivers and
     add softdep on irq_bcm2712_mip driver to ensure that it is loaded
     first (Stanimir Varbanov)

   - Expand inbound window map to 64GB so it can accommodate BCM2712
     (Stanimir Varbanov)

   - Add BCM2712 support and DT updates (Stanimir Varbanov)

   - Apply link speed restriction before bringing link up, not after
     (Jim Quinlan)

   - Update Max Link Speed in Link Capabilities via the internal
     writable register, not the read-only config register (Jim Quinlan)

   - Handle regulator_bulk_get() error to avoid panic when we call
     regulator_bulk_free() later (Jim Quinlan)

   - Disable regulators only when removing the bus immediately below a
     Root Port because we don't support regulators deeper in the
     hierarchy (Jim Quinlan)

   - Make const read-only arrays static (Colin Ian King)

  Cadence PCIe endpoint driver:

   - Correct MSG TLP generation so endpoints can generate INTx messages
     (Hans Zhang)

  Freescale i.MX6 PCIe controller driver:

   - Identify the second controller on i.MX8MQ based on devicetree
     'linux,pci-domain' instead of DBI 'reg' address (Richard Zhu)

   - Remove imx_pcie_cpu_addr_fixup() since dwc core can now derive the
     ATU input address (using parent_bus_offset) from devicetree (Frank
     Li)

  Freescale Layerscape PCIe controller driver:

   - Drop deprecated 'num-ib-windows' and 'num-ob-windows' and
     unnecessary 'status' from example (Krzysztof Kozlowski)

   - Correct the syscon_regmap_lookup_by_phandle_args("fsl,pcie-scfg")
     arg_count to fix probe failure on LS1043A (Ioana Ciornei)

  HiSilicon STB PCIe controller driver:

   - Call phy_exit() to clean up if histb_pcie_probe() fails (Christophe
     JAILLET)

  Intel Gateway PCIe controller driver:

   - Remove intel_pcie_cpu_addr() since dwc core can now derive the ATU
     input address (using parent_bus_offset) from devicetree (Frank Li)

  Intel VMD host bridge driver:

   - Convert vmd_dev.cfg_lock from spinlock_t to raw_spinlock_t so
     pci_ops.read() will never sleep, even on PREEMPT_RT where
     spinlock_t becomes a sleepable lock, to avoid calling a sleeping
     function from invalid context (Ryo Takakura)

  MediaTek PCIe Gen3 controller driver:

   - Remove leftover mac_reset assert for Airoha EN7581 SoC (Lorenzo
     Bianconi)

   - Add EN7581 PBUS controller 'mediatek,pbus-csr' DT property and
     program host bridge memory aperture to this syscon node (Lorenzo
     Bianconi)

  Qualcomm PCIe controller driver:

   - Add qcom,pcie-ipq5332 binding (Varadarajan Narayanan)

   - Add qcom i.MX8QM and i.MX8QXP/DXP optional DMA interrupt (Alexander
     Stein)

   - Add optional dma-coherent DT property for Qualcomm SA8775P (Dmitry
     Baryshkov)

   - Make DT iommu property required for SA8775P and prohibited for
     SDX55 (Dmitry Baryshkov)

   - Add DT IOMMU and DMA-related properties for Qualcomm SM8450 (Dmitry
     Baryshkov)

   - Add endpoint DT properties for SAR2130P and enable endpoint mode in
     driver (Dmitry Baryshkov)

   - Describe endpoint BAR0 and BAR2 as 64-bit only and BAR1 and BAR3 as
     RESERVED (Manivannan Sadhasivam)

  Rockchip DesignWare PCIe controller driver:

   - Describe rk3568 and rk3588 BARs as Resizable, not Fixed (Niklas
     Cassel)

  Synopsys DesignWare PCIe controller driver:

   - Add debugfs-based Silicon Debug, Error Injection, Statistical
     Counter support for DWC (Shradha Todi)

   - Add debugfs property to expose LTSSM status of DWC PCIe link (Hans
     Zhang)

   - Add Rockchip support for DWC debugfs features (Niklas Cassel)

   - Add dw_pcie_parent_bus_offset() to look up the parent bus address
     of a specified 'reg' property and return the offset from the CPU
     physical address (Frank Li)

   - Use dw_pcie_parent_bus_offset() to derive CPU -> ATU addr offset
     via 'reg[config]' for host controllers and 'reg[addr_space]' for
     endpoint controllers (Frank Li)

   - Apply struct dw_pcie.parent_bus_offset in ATU users to remove use
     of .cpu_addr_fixup() when programming ATU (Frank Li)

  TI J721E PCIe driver:

   - Correct the 'link down' interrupt bit for J784S4 (Siddharth
     Vadapalli)

  TI Keystone PCIe controller driver:

   - Describe AM65x BARs 2 and 5 as Resizable (not Fixed) and reduce
     alignment requirement from 1MB to 64KB (Niklas Cassel)

  Xilinx Versal CPM PCIe controller driver:

   - Free IRQ domain in probe error path to avoid leaking it
     (Thippeswamy Havalige)

   - Add DT .compatible "xlnx,versal-cpm5nc-host" and driver support for
     Versal Net CPM5NC Root Port controller (Thippeswamy Havalige)

   - Add driver support for CPM5_HOST1 (Thippeswamy Havalige)

  Miscellaneous:

   - Convert fsl,mpc83xx-pcie binding to YAML (J. Neuschäfer)

   - Use for_each_available_child_of_node_scoped() to simplify apple,
     kirin, mediatek, mt7621, tegra drivers (Zhang Zekun)"

* tag 'pci-v6.15-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/pci/pci: (197 commits)
  PCI: layerscape: Fix arg_count to syscon_regmap_lookup_by_phandle_args()
  PCI: j721e: Fix the value of .linkdown_irq_regfield for J784S4
  misc: pci_endpoint_test: Add support for PCITEST_IRQ_TYPE_AUTO
  PCI: endpoint: pci-epf-test: Expose supported IRQ types in CAPS register
  PCI: dw-rockchip: Endpoint mode cannot raise INTx interrupts
  PCI: endpoint: Add intx_capable to epc_features struct
  dt-bindings: PCI: Add common schema for devices accessible through PCI BARs
  PCI: intel-gw: Remove intel_pcie_cpu_addr()
  PCI: imx6: Remove imx_pcie_cpu_addr_fixup()
  PCI: dwc: Use parent_bus_offset to remove need for .cpu_addr_fixup()
  PCI: dwc: ep: Ensure proper iteration over outbound map windows
  PCI: dwc: ep: Use devicetree 'reg[addr_space]' to derive CPU -> ATU addr offset
  PCI: dwc: ep: Consolidate devicetree handling in dw_pcie_ep_get_resources()
  PCI: dwc: ep: Call epc_create() early in dw_pcie_ep_init()
  PCI: dwc: Use devicetree 'reg[config]' to derive CPU -> ATU addr offset
  PCI: dwc: Add dw_pcie_parent_bus_offset() checking and debug
  PCI: dwc: Add dw_pcie_parent_bus_offset()
  PCI/bwctrl: Fix NULL pointer dereference on bus number exhaustion
  PCI: xilinx-cpm: Add cpm_csr register mapping for CPM5_HOST1 variant
  PCI: brcmstb: Make const read-only arrays static
  ...
2025-03-28 19:36:53 -07:00
Linus Torvalds
0c86b42439 Merge tag 'drm-next-2025-03-28' of https://gitlab.freedesktop.org/drm/kernel
Pull drm updates from Dave Airlie:
 "Outside of drm there are some rust patches from Danilo who maintains
  that area in here, and some pieces for drm header check tests.

  The major things in here are a new driver supporting the touchbar
  displays on M1/M2, the nova-core stub driver which is just the vehicle
  for adding rust abstractions and start developing a real driver inside
  of.

  xe adds support for SVM with a non-driver specific SVM core
  abstraction that will hopefully be useful for other drivers, along
  with support for shrinking for TTM devices. I'm sure xe and AMD
  support new devices, but the pipeline depth on these things is hard to
  know what they end up being in the marketplace!

  uapi:
   - add mediatek tiled fourcc
   - add support for notifying userspace on device wedged

  new driver:
   - appletbdrm: support for Apple Touchbar displays on m1/m2
   - nova-core: skeleton rust driver to develop nova inside off

  firmware:
   - add some rust firmware pieces

  rust:
   - add 'LocalModule' type alias

  component:
   - add helper to query bound status

  fbdev:
   - fbtft: remove access to page->index

  media:
   - cec: tda998x: import driver from drm

  dma-buf:
   - add fast path for single fence merging

  tests:
   - fix lockdep warnings

  atomic:
   - allow full modeset on connector changes
   - clarify semantics of allow_modeset and drm_atomic_helper_check
   - async-flip: support on arbitary planes
   - writeback: fix UAF
   - Document atomic-state history

  format-helper:
   - support ARGB8888 to ARGB4444 conversions

  buddy:
   - fix multi-root cleanup

  ci:
   - update IGT

  dp:
   - support extended wake timeout
   - mst: fix RAD to string conversion
   - increase DPCD eDP control CAP size to 5 bytes
   - add DPCD eDP v1.5 definition
   - add helpers for LTTPR transparent mode

  panic:
   - encode QR code according to Fido 2.2

  scheduler:
   - add parameter struct for init
   - improve job peek/pop operations
   - optimise drm_sched_job struct layout

  ttm:
   - refactor pool allocation
   - add helpers for TTM shrinker

  panel-orientation:
   - add a bunch of new quirks

  panel:
   - convert panels to multi-style functions
   - edp: Add support for B140UAN04.4, BOE NV140FHM-NZ, CSW MNB601LS1-3,
     LG LP079QX1-SP0V, MNE007QS3-7, STA 116QHD024002, Starry
     116KHD024006, Lenovo T14s Gen6 Snapdragon
   - himax-hx83102: Add support for CSOT PNA957QT1-1, Kingdisplay
     kd110n11-51ie, Starry 2082109qfh040022-50e
   - visionox-r66451: use multi-style MIPI-DSI functions
   - raydium-rm67200: Add driver for Raydium RM67200
   - simple: Add support for BOE AV123Z7M-N17, BOE AV123Z7M-N17
   - sony-td4353-jdi: Use MIPI-DSI multi-func interface
   - summit: Add driver for Apple Summit display panel
   - visionox-rm692e5: Add driver for Visionox RM692E5

  bridge:
   - pass full atomic state to various callbacks
   - adv7511: Report correct capabilities
   - it6505: Fix HDCP V compare
   - snd65dsi86: fix device IDs
   - nwl-dsi: set bridge type
   - ti-sn65si83: add error recovery and set bridge type
   - synopsys: add HDMI audio support

  xe:
   - support device-wedged event
   - add mmap support for PCI memory barrier
   - perf pmu integration and expose per-engien activity
   - add EU stall sampling support
   - GPU SVM and Xe SVM implementation
   - use TTM shrinker
   - add survivability mode to allow the driver to do firmware updates
     in critical failure states
   - PXP HWDRM support for MTL and LNL
   - expose package/vram temps over hwmon
   - enable DP tunneling
   - drop mmio_ext abstraction
   - Reject BO evcition if BO is bound to current VM
   - Xe suballocator improvements
   - re-use display vmas when possible
   - add GuC Buffer Cache abstraction
   - PCI ID update for Panther Lake and Battlemage
   - Enable SRIOV for Panther Lake
   - Refactor VRAM manager location

  i915:
   - enable extends wake timeout
   - support device-wedged event
   - Enable DP 128b/132b SST DSC
   - FBC dirty rectangle support for display version 30+
   - convert i915/xe to drm client setup
   - Compute HDMI PLLS for rates not in fixed tables
   - Allow DSB usage when PSR is enabled on LNL+
   - Enable panel replay without full modeset
   - Enable async flips with compressed buffers on ICL+
   - support luminance based brightness via DPCD for eDP
   - enable VRR enable/disable without full modeset
   - allow GuC SLPC default strategies on MTL+ for performance
   - lots of display refactoring in move to struct intel_display

  amdgpu:
   - add device wedged event
   - support async page flips on overlay planes
   - enable broadcast RGB drm property
   - add info ioctl for virt mode
   - OEM i2c support for RGB lights
   - GC 11.5.2 + 11.5.3 support
   - SDMA 6.1.3 support
   - NBIO 7.9.1 + 7.11.2 support
   - MMHUB 1.8.1 + 3.3.2 support
   - DCN 3.6.0 support
   - Add dynamic workload profile switching for GC 10-12
   - support larger VBIOS sizes
   - Mark gttsize parameters as deprecated
   - Initial JPEG queue resset support

  amdkfd:
   - add KFD per process flags for setting precision
   - sync pasid values between KGD and KFD
   - improve GTT/VRAM handling for APUs
   - fix user queue validation on GC7/8
   - SDMA queue reset support

  raedeon:
   - rs400 hyperz fix

  i2c:
   - td998x: drop platform_data, split driver into media and bridge

  ast:
   - transmitter chip detection refactoring
   - vbios display mode refactoring
   - astdp: fix connection status and filter unsupported modes
   - cursor handling refactoring

  imagination:
   - check job dependencies with sched helper

  ivpu:
   - improve command queue handling
   - use workqueue for IRQ handling
   - add support HW fault injection
   - locking fixes

  mgag200:
   - add support for G200eH5

  msm:
   - dpu: add concurrent writeback support for DPU 10.x+
   - use LTTPR helpers
   - GPU:
     - Fix obscure GMU suspend failure
     - Expose syncobj timeline support
     - Extend GPU devcoredump with pagetable info
     - a623 support
     - Fix a6xx gen1/gen2 indexed-register blocks in gpu snapshot /
       devcoredump
   - Display:
     - Add cpu-cfg interconnect paths on SM8560 and SM8650
     - Introduce KMS OMMU fault handler, causing devcoredump snapshot
     - Fixed error pointer dereference in msm_kms_init_aspace()
   - DPU:
     - Fix mode_changing handling
     - Add writeback support on SM6150 (QCS615)
     - Fix DSC programming in 1:1:1 topology
     - Reworked hardware resource allocation, moving it to the CRTC code
     - Enabled support for Concurrent WriteBack (CWB) on SM8650
     - Enabled CDM blocks on all relevant platforms
     - Reworked debugfs interface for BW/clocks debugging
     - Clear perf params before calculating bw
     - Support YUV formats on writeback
     - Fixed double inclusion
     - Fixed writeback in YUV formats when using cloned output, Dropped
       wb2_formats_rgb
     - Corrected dpu_crtc_check_mode_changed and struct dpu_encoder_virt
       kerneldocs
     - Fixed uninitialized variable in dpu_crtc_kickoff_clone_mode()
   - DSI:
     - DSC-related fixes
     - Rework clock programming
   - DSI PHY:
     - Fix 7nm (and lower) PHY programming
     - Add proper DT schema definitions for DSI PHY clocks
   - HDMI:
     - Rework the driver, enabling the use of the HDMI Connector
       framework
   - Bindings:
     - Added eDP PHY on SA8775P

  nouveau:
   - move drm_slave_encoder interface into driver
   - nvkm: refactor GSP RPC
   - use LTTPR helpers

  mediatek:
   - HDMI fixup and refinement
   - add MT8188 dsc compatible
   - MT8365 SoC support

  panthor:
   - Expose sizes of intenral BOs via fdinfo
   - Fix race between reset and suspend
   - Improve locking

  qaic:
   - Add support for AIC200

  renesas:
   - Fix limits in DT bindings

  rockchip:
   - support rk3562-mali
   - rk3576: Add HDMI support
   - vop2: Add new display modes on RK3588 HDMI0 up to 4K
   - Don't change HDMI reference clock rate
   - Fix DT bindings
   - analogix_dp: add eDP support
   - fix shutodnw

  solomon:
   - Set SPI device table to silence warnings
   - Fix pixel and scanline encoding

  v3d:
   - handle clock

  vc4:
   - Use drm_exec
   - Use dma-resv for wait-BO ioctl
   - Remove seqno infrastructure

  virtgpu:
   - Support partial mappings of GEM objects
   - Reserve VGA resources during initialization
   - Fix UAF in virtgpu_dma_buf_free_obj()
   - Add panic support

  vkms:
   - Switch to a managed modesetting pipeline
   - Add support for ARGB8888
   - fix UAf

  xlnx:
   - Set correct DMA segment size
   - use mutex guards
   - Fix error handling
   - Fix docs"

* tag 'drm-next-2025-03-28' of https://gitlab.freedesktop.org/drm/kernel: (1762 commits)
  drm/amd/pm: Update feature list for smu_v13_0_6
  drm/amdgpu: Add parameter documentation for amdgpu_sync_fence
  drm/amdgpu/discovery: optionally use fw based ip discovery
  drm/amdgpu/discovery: use specific ip_discovery.bin for legacy asics
  drm/amdgpu/discovery: check ip_discovery fw file available
  drm/amd/pm: Remove unnecessay UQ10 to UINT conversion
  drm/amd/pm: Remove unnecessay UQ10 to UINT conversion
  drm/amdgpu/sdma_v4_4_2: update VM flush implementation for SDMA
  drm/amdgpu: Optimize VM invalidation engine allocation and synchronize GPU TLB flush
  drm/amd/amdgpu: Increase max rings to enable SDMA page ring
  drm/amdgpu: Decode deferred error type in gfx aca bank parser
  drm/amdgpu/gfx11: Add Cleaner Shader Support for GFX11.5 GPUs
  drm/amdgpu/mes: clean up SDMA HQD loop
  drm/amdgpu/mes: enable compute pipes across all MEC
  drm/amdgpu/mes: drop MES 10.x leftovers
  drm/amdgpu/mes: optimize compute loop handling
  drm/amdgpu/sdma: guilty tracking is per instance
  drm/amdgpu/sdma: fix engine reset handling
  drm/amdgpu: remove invalid usage of sched.ready
  drm/amdgpu: add cleaner shader trace point
  ...
2025-03-28 17:44:52 -07:00
Linus Torvalds
336b4dae6d Merge tag 'iommu-updates-v6.15' of git://git.kernel.org/pub/scm/linux/kernel/git/iommu/linux
Pull iommu updates from Joerg Roedel:
 "Core iommufd dependencies from Jason:
   - Change the iommufd fault handle into an always present hwpt handle
     in the domain
   - Give iommufd its own SW_MSI implementation along with some IRQ
     layer rework
   - Improvements to the handle attach API

  Core fixes for probe-issues from Robin

  Intel VT-d changes:
   - Checking for SVA support in domain allocation and attach paths
   - Move PCI ATS and PRI configuration into probe paths
   - Fix a pentential hang on reboot -f
   - Miscellaneous cleanups

  AMD-Vi changes:
   - Support for up to 2k IRQs per PCI device function
   - Set of smaller fixes

  ARM-SMMU changes:
   - SMMUv2 devicetree binding updates for Qualcomm implementations
     (QCS8300 GPU and MSM8937)
   - Clean up SMMUv2 runtime PM implementation to help with wider rework
     of pm_runtime_put_autosuspend()

  Rockchip driver changes:
   - Driver adjustments for recent DT probing changes

  S390 IOMMU changes:
   - Support for IOMMU passthrough

  Apple Dart changes:
   - Driver adjustments to meet ISP device requirements
   - Null-ptr deref fix
   - Disable subpage protection for DART 1"

* tag 'iommu-updates-v6.15' of git://git.kernel.org/pub/scm/linux/kernel/git/iommu/linux: (54 commits)
  iommu/vt-d: Fix possible circular locking dependency
  iommu/vt-d: Don't clobber posted vCPU IRTE when host IRQ affinity changes
  iommu/vt-d: Put IRTE back into posted MSI mode if vCPU posting is disabled
  iommu: apple-dart: fix potential null pointer deref
  iommu/rockchip: Retire global dma_dev workaround
  iommu/rockchip: Register in a sensible order
  iommu/rockchip: Allocate per-device data sensibly
  iommu/mediatek-v1: Support COMPILE_TEST
  iommu/amd: Enable support for up to 2K interrupts per function
  iommu/amd: Rename DTE_INTTABLEN* and MAX_IRQS_PER_TABLE macro
  iommu/amd: Replace slab cache allocator with page allocator
  iommu/amd: Introduce generic function to set multibit feature value
  iommu: Don't warn prematurely about dodgy probes
  iommu/arm-smmu: Set rpm auto_suspend once during probe
  dt-bindings: arm-smmu: Document QCS8300 GPU SMMU
  iommu: Get DT/ACPI parsing into the proper probe path
  iommu: Keep dev->iommu state consistent
  iommu: Resolve ops in iommu_init_device()
  iommu: Handle race with default domain setup
  iommu: Unexport iommu_fwspec_free()
  ...
2025-03-26 20:10:09 -07:00
Linus Torvalds
e50da555ca Merge tag 'sound-6.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
Pull sound updates from Takashi Iwai:
 "We've received lots of commits at this time, as a result of various
  cleanup and refactoring works as well as a few new drivers and the
  generic SoundWire support. Most of changes are device-specific, little
  about the core changes. Some highlights below:

  Core:
   - A couple of (rather minor) race fixes in ALSA sequencer code
   - A regression fix in ALSA timer code that may lead to a deadlock

  ASoC:
   - A large series of code conversion to use modern terminology for the
     clocking configuration
   - Conversions of PM ops with the modern macros in all ASoC drivers
   - Clarification of the control operations
   - Prepartory work for more generic SoundWire SCDA controls
   - Support for AMD ACP 7.x, AWINC WM88166, Everest ES8388, Intel AVS
     PEAKVOL and GAIN DSP modules Mediatek MT8188 DMIC, NXP i.MX95,
     nVidia Tegra interconnects, Rockchip RK3588 S/PDIF, Texas
     Instruments SN012776 and TAS5770L, and Wolfson WM8904 DMICs

  Others:
   - Conversions of PM ops with the modern macros in the rest drivers
   - USB-audio quirks and fixes for Presonus Studio, DJM-A9, CME
   - HD-audio quirks and fixes ASUS, HP, Lenovo, and others"

* tag 'sound-6.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: (651 commits)
  ALSA: hda: tas2781-i2c: Remove unnecessary NULL check before release_firmware()
  ALSA: hda: cs35l56: Remove unnecessary NULL check before release_firmware()
  ALSA: hda/realtek: Bass speaker fixup for ASUS UM5606KA
  ALSA: hda/realtek: Fix built-in mic assignment on ASUS VivoBook X515UA
  ALSA: hda/realtek: Add support for various HP Laptops using CS35L41 HDA
  ALSA: timer: Don't take register_mutex with copy_from/to_user()
  ASoC: SDCA: Correct handling of selected mode DisCo property
  ASoC: amd: yc: update quirk data for new Lenovo model
  ALSA: hda/realtek: fix micmute LEDs on HP Laptops with ALC3247
  ALSA: hda/realtek: fix micmute LEDs on HP Laptops with ALC3315
  ASoC: SOF: mediatek: Commonize duplicated functions
  ASoC: dmic: Fix NULL pointer dereference
  ASoC: wm8904: add DMIC support
  ASoC: wm8904: get platform data from DT
  ASoC: dt-bindings: wm8904: Add DMIC, GPIO, MIC and EQ support
  ASoC: wm8904: Don't touch GPIO configs set to 0xFFFF
  of: Add of_property_read_u16_index
  ALSA: oxygen: Fix dependency on CONFIG_PM_SLEEP
  ASoC: ops: Apply platform_max after deciding control type
  ASoC: ops: Remove some unnecessary local variables
  ...
2025-03-26 09:41:55 -07:00
Linus Torvalds
7d20aa5c32 Merge tag 'pm-6.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull power management updates from Rafael Wysocki:
 "These are dominated by cpufreq updates which in turn are dominated by
  updates related to boost support in the core and drivers and
  amd-pstate driver optimizations.

  Apart from the above, there are some cpuidle updates including a
  rework of the most recent idle intervals handling in the venerable
  menu governor that leads to significant improvements in some
  performance benchmarks, as the governor is now more likely to predict
  a shorter idle duration in some cases, and there are updates of the
  core device power management code, mostly related to system suspend
  and resume, that should help to avoid potential issues arising when
  the drivers of devices depending on one another want to use different
  optimizations.

  There is also a usual collection of assorted fixes and cleanups,
  including removal of some unused code.

  Specifics:

   - Manage sysfs attributes and boost frequencies efficiently from
     cpufreq core to reduce boilerplate code in drivers (Viresh Kumar)

   - Minor cleanups to cpufreq drivers (Aaron Kling, Benjamin Schneider,
     Dhananjay Ugwekar, Imran Shaik, zuoqian)

   - Migrate some cpufreq drivers to using for_each_present_cpu() (Jacky
     Bai)

   - cpufreq-qcom-hw DT binding fixes (Krzysztof Kozlowski)

   - Use str_enable_disable() helper in cpufreq_online() (Lifeng Zheng)

   - Optimize the amd-pstate driver to avoid cases where call paths end
     up calling the same writes multiple times and needlessly caching
     variables through code reorganization, locking overhaul and tracing
     adjustments (Mario Limonciello, Dhananjay Ugwekar)

   - Make it possible to avoid enabling capacity-aware scheduling (CAS)
     in the intel_pstate driver and relocate a check for out-of-band
     (OOB) platform handling in it to make it detect OOB before checking
     HWP availability (Rafael Wysocki)

   - Fix dbs_update() to avoid inadvertent conversions of negative
     integer values to unsigned int which causes CPU frequency selection
     to be inaccurate in some cases when the "conservative" cpufreq
     governor is in use (Jie Zhan)

   - Update the handling of the most recent idle intervals in the menu
     cpuidle governor to prevent useful information from being discarded
     by it in some cases and improve the prediction accuracy (Rafael
     Wysocki)

   - Make it possible to tell the intel_idle driver to ignore its
     built-in table of idle states for the given processor, clean up the
     handling of auto-demotion disabling on Baytrail and Cherrytrail
     chips in it, and update its MAINTAINERS entry (David Arcari, Artem
     Bityutskiy, Rafael Wysocki)

   - Make some cpuidle drivers use for_each_present_cpu() instead of
     for_each_possible_cpu() during initialization to avoid issues
     occurring when nosmp or maxcpus=0 are used (Jacky Bai)

   - Clean up the Energy Model handling code somewhat (Rafael Wysocki)

   - Use kfree_rcu() to simplify the handling of runtime Energy Model
     updates (Li RongQing)

   - Add an entry for the Energy Model framework to MAINTAINERS as
     properly maintained (Lukasz Luba)

   - Address RCU-related sparse warnings in the Energy Model code
     (Rafael Wysocki)

   - Remove ENERGY_MODEL dependency on SMP and allow it to be selected
     when DEVFREQ is set without CPUFREQ so it can be used on a wider
     range of systems (Jeson Gao)

   - Unify error handling during runtime suspend and runtime resume in
     the core to help drivers to implement more consistent runtime PM
     error handling (Rafael Wysocki)

   - Drop a redundant check from pm_runtime_force_resume() and rearrange
     documentation related to __pm_runtime_disable() (Rafael Wysocki)

   - Rework the handling of the "smart suspend" driver flag in the PM
     core to avoid issues hat may occur when drivers using it depend on
     some other drivers and clean up the related PM core code (Rafael
     Wysocki, Colin Ian King)

   - Fix the handling of devices with the power.direct_complete flag set
     if device_suspend() returns an error for at least one device to
     avoid situations in which some of them may not be resumed (Rafael
     Wysocki)

   - Use mutex_trylock() in hibernate_compressor_param_set() to avoid a
     possible deadlock that may occur if the "compressor" hibernation
     module parameter is accessed during the registration of a new
     ieee80211 device (Lizhi Xu)

   - Suppress sleeping parent warning in device_pm_add() in the case
     when new children are added under a device with the
     power.direct_complete set after it has been processed by
     device_resume() (Xu Yang)

   - Remove needless return in three void functions related to system
     wakeup (Zijun Hu)

   - Replace deprecated kmap_atomic() with kmap_local_page() in the
     hibernation core code (David Reaver)

   - Remove unused helper functions related to system sleep (David Alan
     Gilbert)

   - Clean up s2idle_enter() so it does not lock and unlock CPU offline
     in vain and update comments in it (Ulf Hansson)

   - Clean up broken white space in dpm_wait_for_children() (Geert
     Uytterhoeven)

   - Update the cpupower utility to fix lib version-ing in it and memory
     leaks in error legs, remove hard-coded values, and implement CPU
     physical core querying (Thomas Renninger, John B. Wyatt IV, Shuah
     Khan, Yiwei Lin, Zhongqiu Han)"

* tag 'pm-6.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (139 commits)
  PM: sleep: Fix bit masking operation
  dt-bindings: cpufreq: cpufreq-qcom-hw: Narrow properties on SDX75, SA8775p and SM8650
  dt-bindings: cpufreq: cpufreq-qcom-hw: Drop redundant minItems:1
  dt-bindings: cpufreq: cpufreq-qcom-hw: Add missing constraint for interrupt-names
  dt-bindings: cpufreq: cpufreq-qcom-hw: Add QCS8300 compatible
  cpufreq: Init cpufreq only for present CPUs
  PM: sleep: Fix handling devices with direct_complete set on errors
  cpuidle: Init cpuidle only for present CPUs
  PM: clk: Remove unused pm_clk_remove()
  PM: sleep: core: Fix indentation in dpm_wait_for_children()
  PM: s2idle: Extend comment in s2idle_enter()
  PM: s2idle: Drop redundant locks when entering s2idle
  PM: sleep: Remove unused pm_generic_ wrappers
  cpufreq: tegra186: Share policy per cluster
  cpupower: Make lib versioning scheme more obvious and fix version link
  PM: EM: Rework the depends on for CONFIG_ENERGY_MODEL
  PM: EM: Address RCU-related sparse warnings
  cpupower: Implement CPU physical core querying
  pm: cpupower: remove hard-coded topology depth values
  pm: cpupower: Fix cmd_monitor() error legs to free cpu_topology
  ...
2025-03-25 15:00:18 -07:00
Linus Torvalds
2d09a9449e Merge tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Pull arm64 updates from Catalin Marinas:
 "Nothing major this time around.

  Apart from the usual perf/PMU updates, some page table cleanups, the
  notable features are average CPU frequency based on the AMUv1
  counters, CONFIG_HOTPLUG_SMT and MOPS instructions (memcpy/memset) in
  the uaccess routines.

  Perf and PMUs:

   - Support for the 'Rainier' CPU PMU from Arm

   - Preparatory driver changes and cleanups that pave the way for BRBE
     support

   - Support for partial virtualisation of the Apple-M1 PMU

   - Support for the second event filter in Arm CSPMU designs

   - Minor fixes and cleanups (CMN and DWC PMUs)

   - Enable EL2 requirements for FEAT_PMUv3p9

  Power, CPU topology:

   - Support for AMUv1-based average CPU frequency

   - Run-time SMT control wired up for arm64 (CONFIG_HOTPLUG_SMT). It
     adds a generic topology_is_primary_thread() function overridden by
     x86 and powerpc

  New(ish) features:

   - MOPS (memcpy/memset) support for the uaccess routines

  Security/confidential compute:

   - Fix the DMA address for devices used in Realms with Arm CCA. The
     CCA architecture uses the address bit to differentiate between
     shared and private addresses

   - Spectre-BHB: assume CPUs Linux doesn't know about vulnerable by
     default

  Memory management clean-ups:

   - Drop the P*D_TABLE_BIT definition in preparation for 128-bit PTEs

   - Some minor page table accessor clean-ups

   - PIE/POE (permission indirection/overlay) helpers clean-up

  Kselftests:

   - MTE: skip hugetlb tests if MTE is not supported on such mappings
     and user correct naming for sync/async tag checking modes

  Miscellaneous:

   - Add a PKEY_UNRESTRICTED definition as 0 to uapi (toolchain people
     request)

   - Sysreg updates for new register fields

   - CPU type info for some Qualcomm Kryo cores"

* tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: (72 commits)
  arm64: mm: Don't use %pK through printk
  perf/arm_cspmu: Fix missing io.h include
  arm64: errata: Add newer ARM cores to the spectre_bhb_loop_affected() lists
  arm64: cputype: Add MIDR_CORTEX_A76AE
  arm64: errata: Add KRYO 2XX/3XX/4XX silver cores to Spectre BHB safe list
  arm64: errata: Assume that unknown CPUs _are_ vulnerable to Spectre BHB
  arm64: errata: Add QCOM_KRYO_4XX_GOLD to the spectre_bhb_k24_list
  arm64/sysreg: Enforce whole word match for open/close tokens
  arm64/sysreg: Fix unbalanced closing block
  arm64: Kconfig: Enable HOTPLUG_SMT
  arm64: topology: Support SMT control on ACPI based system
  arch_topology: Support SMT control for OF based system
  cpu/SMT: Provide a default topology_is_primary_thread()
  arm64/mm: Define PTDESC_ORDER
  perf/arm_cspmu: Add PMEVFILT2R support
  perf/arm_cspmu: Generalise event filtering
  perf/arm_cspmu: Move register definitons to header
  arm64/kernel: Always use level 2 or higher for early mappings
  arm64/mm: Drop PXD_TABLE_BIT
  arm64/mm: Check pmd_table() in pmd_trans_huge()
  ...
2025-03-25 13:16:16 -07:00
Catalin Marinas
8ae9e2d832 Merge branch 'for-next/smt-control' into for-next/core
* for-next/smt-control:
  : Support SMT control on arm64
  arm64: Kconfig: Enable HOTPLUG_SMT
  arm64: topology: Support SMT control on ACPI based system
  arch_topology: Support SMT control for OF based system
  cpu/SMT: Provide a default topology_is_primary_thread()
2025-03-25 19:32:28 +00:00
Linus Torvalds
a50b4fe095 Merge tag 'timers-cleanups-2025-03-23' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull timer cleanups from Thomas Gleixner:
 "A treewide hrtimer timer cleanup

  hrtimers are initialized with hrtimer_init() and a subsequent store to
  the callback pointer. This turned out to be suboptimal for the
  upcoming Rust integration and is obviously a silly implementation to
  begin with.

  This cleanup replaces the hrtimer_init(T); T->function = cb; sequence
  with hrtimer_setup(T, cb);

  The conversion was done with Coccinelle and a few manual fixups.

  Once the conversion has completely landed in mainline, hrtimer_init()
  will be removed and the hrtimer::function becomes a private member"

* tag 'timers-cleanups-2025-03-23' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (100 commits)
  wifi: rt2x00: Switch to use hrtimer_update_function()
  io_uring: Use helper function hrtimer_update_function()
  serial: xilinx_uartps: Use helper function hrtimer_update_function()
  ASoC: fsl: imx-pcm-fiq: Switch to use hrtimer_setup()
  RDMA: Switch to use hrtimer_setup()
  virtio: mem: Switch to use hrtimer_setup()
  drm/vmwgfx: Switch to use hrtimer_setup()
  drm/xe/oa: Switch to use hrtimer_setup()
  drm/vkms: Switch to use hrtimer_setup()
  drm/msm: Switch to use hrtimer_setup()
  drm/i915/request: Switch to use hrtimer_setup()
  drm/i915/uncore: Switch to use hrtimer_setup()
  drm/i915/pmu: Switch to use hrtimer_setup()
  drm/i915/perf: Switch to use hrtimer_setup()
  drm/i915/gvt: Switch to use hrtimer_setup()
  drm/i915/huc: Switch to use hrtimer_setup()
  drm/amdgpu: Switch to use hrtimer_setup()
  stm class: heartbeat: Switch to use hrtimer_setup()
  i2c: Switch to use hrtimer_setup()
  iio: Switch to use hrtimer_setup()
  ...
2025-03-25 10:54:15 -07:00
Linus Torvalds
26d8e43079 Merge tag 'vfs-6.15-rc1.async.dir' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs
Pull vfs async dir updates from Christian Brauner:
 "This contains cleanups that fell out of the work from async directory
  handling:

   - Change kern_path_locked() and user_path_locked_at() to never return
     a negative dentry. This simplifies the usability of these helpers
     in various places

   - Drop d_exact_alias() from the remaining place in NFS where it is
     still used. This also allows us to drop the d_exact_alias() helper
     completely

   - Drop an unnecessary call to fh_update() from nfsd_create_locked()

   - Change i_op->mkdir() to return a struct dentry

     Change vfs_mkdir() to return a dentry provided by the filesystems
     which is hashed and positive. This allows us to reduce the number
     of cases where the resulting dentry is not positive to very few
     cases. The code in these places becomes simpler and easier to
     understand.

   - Repack DENTRY_* and LOOKUP_* flags"

* tag 'vfs-6.15-rc1.async.dir' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs:
  doc: fix inline emphasis warning
  VFS: Change vfs_mkdir() to return the dentry.
  nfs: change mkdir inode_operation to return alternate dentry if needed.
  fuse: return correct dentry for ->mkdir
  ceph: return the correct dentry on mkdir
  hostfs: store inode in dentry after mkdir if possible.
  Change inode_operations.mkdir to return struct dentry *
  nfsd: drop fh_update() from S_IFDIR branch of nfsd_create_locked()
  nfs/vfs: discard d_exact_alias()
  VFS: add common error checks to lookup_one_qstr_excl()
  VFS: change kern_path_locked() and user_path_locked_at() to never return negative dentry
  VFS: repack LOOKUP_ bit flags.
  VFS: repack DENTRY_ flags.
2025-03-24 10:47:14 -07:00
Linus Torvalds
c4cff1ea37 Merge tag 'vfs-6.15-rc1.mount.api' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs
Pull vfs mount API updates from Christian Brauner:
 "This converts the remaining pseudo filesystems to the new mount api.

  The sysv conversion is a bit gratuitous because we remove sysv in
  another pull request. But if we have to revert the removal we at least
  will have it converted to the new mount api already"

* tag 'vfs-6.15-rc1.mount.api' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs:
  sysv: convert sysv to use the new mount api
  vfs: remove some unused old mount api code
  devtmpfs: replace ->mount with ->get_tree in public instance
  vfs: Convert devpts to use the new mount API
  pstore: convert to the new mount API
2025-03-24 08:49:48 -07:00
Rafael J. Wysocki
c5a55e427c Merge branch 'pm-misc'
Merge two commits removing unused helper functions related to power
management (David Alan Gilbert).

* pm-misc:
  PM: clk: Remove unused pm_clk_remove()
  PM: clk: remove unused of_pm_clk_add_clk()
2025-03-24 15:49:56 +01:00
Rafael J. Wysocki
5a98796468 Merge branch 'pm-sleep'
Merge updates related to system sleep for 6.15-rc1 including fixes,
cleanups and a rework of the "smart suspend" driver flag handling to
avoid issues that may occur when drivers using it depend on some other
drivers:

 - Rework the handling of the "smart suspend" driver flag in the PM core
   to avoid issues hat may occur when drivers using it depend on some
   other drivers and clean up the related PM core code (Rafael Wysocki,
   Colin Ian King).

 - Fix the handling of devices with the power.direct_complete flag set
   if device_suspend() returns an error for at least one device to avoid
   situations in which some of them may not be resumed (Rafael Wysocki).

 - Use mutex_trylock() in hibernate_compressor_param_set() to avoid a
   possible deadlock that may occur if the "compressor" hibernation
   module parameter is accessed during the registration of a new
   ieee80211 device (Lizhi Xu).

 - Suppress sleeping parent warning in device_pm_add() in the case when
   new children are added under a device with the power.direct_complete
   set after it has been processed by device_resume() (Xu Yang).

 - Remove needless return in three void functions related to system
   wakeup (Zijun Hu).

 - Replace deprecated kmap_atomic() with kmap_local_page() in the
   hibernation core code (David Reaver).

 - Remove unused helper functions related to system sleep (David Alan
   Gilbert).

 - Clean up s2idle_enter() so it does not lock and unlock CPU offline
   in vain and update comments in it (Ulf Hansson).

 - Clean up broken white space in dpm_wait_for_children() (Geert
   Uytterhoeven).

* pm-sleep:
  PM: sleep: Fix bit masking operation
  PM: sleep: Fix handling devices with direct_complete set on errors
  PM: sleep: core: Fix indentation in dpm_wait_for_children()
  PM: s2idle: Extend comment in s2idle_enter()
  PM: s2idle: Drop redundant locks when entering s2idle
  PM: sleep: Remove unused pm_generic_ wrappers
  PM: sleep: Rearrange dpm_async_fn() and async state clearing
  PM: sleep: Rename power.async_in_progress to power.work_in_progress
  PM: core: Tweak pm_runtime_block_if_disabled() return value
  PM: runtime: Convert pm_runtime_blocked() to static inline
  PM: sleep: Update power.smart_suspend under PM spinlock
  PM: sleep: Adjust check before setting power.must_resume
  PM: wakeup: Remove needless return in three void APIs
  PM: sleep: Suppress sleeping parent warning in special case
  PM: hibernate: Avoid deadlock in hibernate_compressor_param_set()
  PM: sleep: Avoid unnecessary checks in device_prepare_smart_suspend()
  PM: sleep: Use DPM_FLAG_SMART_SUSPEND conditionally
  PM: runtime: Introduce pm_runtime_blocked()
  PM: Block enabling of runtime PM during system suspend
  PM: hibernate: Replace deprecated kmap_atomic() with kmap_local_page()
2025-03-24 15:19:56 +01:00
Rafael J. Wysocki
8713024412 Merge branches 'pm-em' and 'pm-runtime'
Merge Energy Model handling code updates and updates of the runtime PM
core code for 6.15-rc1:

 - Clean up the Energy Model handling code somewhat (Rafael Wysocki).

 - Use kfree_rcu() to simplify the handling of runtime Energy Model
   updates (Li RongQing).

 - Add an entry for the Energy Model framework to MAINTAINERS as
   properly maintained (Lukasz Luba).

 - Address RCU-related sparse warnings in the Energy Model code (Rafael
   Wysocki).

 - Remove ENERGY_MODEL dependency on SMP and allow it to be selected
   when DEVFREQ is set without CPUFREQ so it can be used on a wider
   range of systems (Jeson Gao).

 - Unify error handling during runtime suspend and runtime resume in the
   core to help drivers to implement more consistent runtime PM error
   handling (Rafael Wysocki).

 - Drop a redundant check from pm_runtime_force_resume() and rearrange
   documentation related to __pm_runtime_disable() (Rafael Wysocki).

* pm-em:
  PM: EM: Rework the depends on for CONFIG_ENERGY_MODEL
  PM: EM: Address RCU-related sparse warnings
  PM: EM: Consify two parameters of em_dev_register_perf_domain()
  MAINTAINERS: Add Energy Model framework as properly maintained
  PM: EM: use kfree_rcu() to simplify the code
  PM: EM: Slightly reduce em_check_capacity_update() overhead
  PM: EM: Drop unused parameter from em_adjust_new_capacity()

* pm-runtime:
  PM: runtime: Unify error handling during suspend and resume
  PM: runtime: Drop status check from pm_runtime_force_resume()
  PM: Rearrange documentation related to __pm_runtime_disable()
2025-03-24 15:06:06 +01:00
Colin Ian King
3860cbe239 PM: sleep: Fix bit masking operation
The mask operation link->flags | DL_FLAG_PM_RUNTIME is always true which
is incorrect. The mask operation should be using the bit-wise &
operator. Fix this.

Fixes: bca84a7b93 ("PM: sleep: Use DPM_FLAG_SMART_SUSPEND conditionally")
Signed-off-by: Colin Ian King <colin.i.king@gmail.com>
Link: https://patch.msgid.link/20250319114324.791829-1-colin.i.king@gmail.com
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2025-03-22 14:55:08 +01:00
Mark Brown
3160e75053 ASoC: wm8904: Add DMIC and DRC support
Merge series from Francesco Dolcini <francesco@dolcini.it>:

This patch series adds DMIC and DRC support to the WM8904 driver, a new
of_ helper is added to simplify the driver code.

DRC functionality is added in the same patch series to provide the
necessary dynamic range control to make DMIC support useful.

The WM8904 supports digital microphones on two of its inputs:
IN1L/DMICDAT1 and IN1R/DMICDAT2. These two inputs can either be
connected to an ADC or to the DMIC system. There is an ADC for each
line, and only one DMIC block. This DMIC block is either connected to
DMICDAT1 or to DMICDAT2. One DMIC data line supports two digital
microphones via time multiplexing.

The pin's functionality is decided during hardware design (IN1L vs
DMICDAT1 and IN1R vs DMICDAT2). This is reflected in the Device Tree.

If one line is analog and one is DMIC, we need to be able to switch
between ADC and DMIC at runtime. The DMIC source is known from the
Device Tree. If both are DMIC inputs, we need to be able to switch the
DMIC source. There is no need to switch between ADC and DMIC at runtime.

Therefore, kcontrols are dynamically added by the driver depending on
its Device Tree configuration.

This is a heavy rework of a previous patch series provided by Alifer
Moraes and Pierluigi Passaro,
https://lore.kernel.org/lkml/20220307141041.27538-1-alifer.m@variscite.com.
2025-03-20 15:35:26 +00:00