Commit Graph

870993 Commits

Author SHA1 Message Date
Maxime Ripard
c85c5c53ff ARM: dts: sun6i: Remove useless reset-names
The HDMI controller definition in the A31 DTSI has a reset-names property,
yet the binding for that controller doesn't declare it.

Remove it.

Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Acked-by: Chen-Yu Tsai <wens@csie.org>
2019-11-05 11:51:33 +01:00
Ondrej Jirman
b5d84ff8ae arm64: dts: allwinner: orange-pi-3: Enable USB 3.0 host support
Enable Allwinner's USB 3.0 phy and the host controller. Orange Pi 3
board has GL3510 USB 3.0 4-port hub connected to the SoC's USB 3.0
port. All four ports are exposed via USB3-A connectors. VBUS is
always on, since it's powered directly from DCIN (VCC-5V) and
not switchable.

Signed-off-by: Ondrej Jirman <megous@megous.com>
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
2019-11-05 11:44:45 +01:00
Icenowy Zheng
0b6f7014ad arm64: dts: allwinner: h6: add USB3 device nodes
Allwinner H6 SoC features USB3 functionality, with a DWC3 controller and
a custom PHY.

Add device tree nodes for them.

Signed-off-by: Ondrej Jirman <megous@megous.com>
Signed-off-by: Icenowy Zheng <icenowy@aosc.io>
Reviewed-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
2019-11-05 11:44:42 +01:00
Torsten Duwe
1e92dbeae8 dt-bindings: Add ANX6345 DP/eDP transmitter binding
The anx6345 is an ultra-low power DisplayPort/eDP transmitter designed
for portable devices.

Add a binding document for it.

Signed-off-by: Icenowy Zheng <icenowy@aosc.io>
Signed-off-by: Vasily Khoruzhick <anarsoul@gmail.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Torsten Duwe <duwe@suse.de>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
2019-11-05 11:42:19 +01:00
Torsten Duwe
79bc02f122 arm64: dts: allwinner: a64: enable ANX6345 bridge on Teres-I
Teres-I has an anx6345 bridge connected to the RGB666 LCD output, and
the I2C controlling signals are connected to I2C0 bus.

Enable it in the device tree, and enable the display engine, video mixer
and tcon0 as well.

Signed-off-by: Icenowy Zheng <icenowy@aosc.io>
Signed-off-by: Torsten Duwe <duwe@suse.de>
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
2019-11-05 11:36:12 +01:00
Jernej Skrabec
240a643898 dts: arm: sun8i: h3: Enable deinterlace unit
Allwinner H3 SoC contains deinterlace unit, which can be used in
combination with VPU unit to decode and process interlaced videos.

Add a node for it.

Acked-by: Maxime Ripard <mripard@kernel.org>
Signed-off-by: Jernej Skrabec <jernej.skrabec@siol.net>
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
2019-11-05 11:35:22 +01:00
Jernej Skrabec
66e40b3517 ARM: dts: sunxi: h3/h5: Add MBUS controller node
Both, H3 and H5, contain MBUS, which is the bus used by DMA devices to
access system memory.

MBUS controller is responsible for arbitration between channels based
on set priority and can do some other things as well, like report
bandwidth used. It also maps RAM region to different address than CPU.

Acked-by: Maxime Ripard <mripard@kernel.org>
Signed-off-by: Jernej Skrabec <jernej.skrabec@siol.net>
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
2019-11-05 11:35:10 +01:00
Jernej Skrabec
ab883313ef dt-bindings: bus: sunxi: Add H3 MBUS compatible
Allwinner H3 SoC also contains MBUS controller.

Add compatible for it.

Acked-by: Maxime Ripard <mripard@kernel.org>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Jernej Skrabec <jernej.skrabec@siol.net>
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
2019-11-05 11:35:05 +01:00
Karl Palsson
d79ccef07b dt-bindings: arm: sunxi: add FriendlyARM NanoPi Duo2
Adds bindings for the newly added NanoPi Duo2 board.

Signed-off-by: Karl Palsson <karlp@tweak.net.au>
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
2019-11-02 16:42:35 +01:00
Karl Palsson
4701fc6e5d ARM: dts: sun8i: add FriendlyARM NanoPi Duo2
This is an Allwinner H3 based board, with 512MB ram, a USB OTG port,
microsd slot, an onboard AP6212A wifi/bluetooth module, and a CSI
connector.

Full details and schematic available from vendor:
http://wiki.friendlyarm.com/wiki/index.php/NanoPi_Duo2

Signed-off-by: Karl Palsson <karlp@tweak.net.au>
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
2019-11-02 16:42:32 +01:00
Clément Péron
3f04e05924 arm64: allwinner: h6: Enable GPU node for Tanix TX6
Unlike other H6 boards, Tanix TX6 doesn't have a PMIC so we can enable
the GPU without providing a specific power supply.

Signed-off-by: Clément Péron <peron.clem@gmail.com>
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
2019-11-02 16:40:18 +01:00
Georgii Staroselskii
5878524ee0 arm64: dts: allwinner: bluetooth for Emlid Neutis N5
The Emlid Neutis N5 board has AP6212 BT+WiFi chip. This patch is in
line with 8558c6e21c ("ARM: dts: sun8i: h3: bluetooth for Banana Pi
M2 Zero board") and other commits that add Bluetooth support for
similar boards.

Signed-off-by: Georgii Staroselskii <georgii.staroselskii@emlid.com>
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
2019-11-01 10:12:42 +01:00
Karl Palsson
6d1aa40e10 ARM: dts: sunxi: h3/h5: add missing uart2 rts/cts pins
uart1 and uart3 had existing pin definitions for the rts/cts pairs.
Add definitions for uart2 as well.

Signed-off-by: Karl Palsson <karlp@tweak.net.au>
Acked-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
2019-11-01 10:04:52 +01:00
Corentin Labbe
edabfce623 ARM: dts: sun9i: a80: Add Security System node
The Security System is a hardware cryptographic accelerator that support
AES/MD5/SHA1/DES/3DES/PRNG/RSA algorithms.
It could be found on Allwinner SoC A80 and A83T

This patch adds it on the Allwinner A80 SoC Device-tree.

Signed-off-by: Corentin Labbe <clabbe.montjoie@gmail.com>
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
2019-11-01 09:58:37 +01:00
Corentin Labbe
c4cf3f5cdd ARM: dts: sun8i: a83t: Add Security System node
The Security System is a hardware cryptographic accelerator that support
AES/MD5/SHA1/DES/3DES/PRNG/RSA algorithms.
It could be found on Allwinner SoC A80 and A83T

This patch adds it on the Allwinner A83T SoC Device-tree.

Signed-off-by: Corentin Labbe <clabbe.montjoie@gmail.com>
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
2019-11-01 09:58:31 +01:00
Corentin Labbe
709b86ff01 arm64: dts: allwinner: sun50i: Add Crypto Engine node on H6
The Crypto Engine is a hardware cryptographic accelerator that supports
many algorithms.

This patch enables the Crypto Engine on the Allwinner H6 SoC Device-tree.

Signed-off-by: Corentin Labbe <clabbe.montjoie@gmail.com>
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
2019-11-01 09:58:01 +01:00
Corentin Labbe
8002c454d4 arm64: dts: allwinner: sun50i: Add crypto engine node on H5
The Crypto Engine is a hardware cryptographic accelerator that supports
many algorithms.
It could be found on most Allwinner SoCs.

This patch enables the Crypto Engine on the Allwinner H5 SoC Device-tree.

Signed-off-by: Corentin Labbe <clabbe.montjoie@gmail.com>
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
2019-11-01 09:57:19 +01:00
Corentin Labbe
0f5fc15885 arm64: dts: allwinner: sun50i: Add Crypto Engine node on A64
The Crypto Engine is a hardware cryptographic accelerator that supports
many algorithms.
It could be found on most Allwinner SoCs.

This patch enables the Crypto Engine on the Allwinner A64 SoC Device-tree.

Signed-off-by: Corentin Labbe <clabbe.montjoie@gmail.com>
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
2019-11-01 09:56:31 +01:00
Corentin Labbe
e7ef094aea ARM: dts: sun8i: H3: Add Crypto Engine node
The Crypto Engine is a hardware cryptographic accelerator that supports
many algorithms.
It could be found on most Allwinner SoCs.

This patch enables the Crypto Engine on the Allwinner H3 SoC Device-tree.

Signed-off-by: Corentin Labbe <clabbe.montjoie@gmail.com>
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
2019-11-01 09:56:17 +01:00
Corentin Labbe
96d8dec97b ARM: dts: sun8i: R40: add crypto engine node
The Crypto Engine is a hardware cryptographic offloader that supports
many algorithms.
It could be found on most Allwinner SoCs.

This patch enables the Crypto Engine on the Allwinner R40 SoC Device-tree.

Signed-off-by: Corentin Labbe <clabbe.montjoie@gmail.com>
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
2019-11-01 09:55:56 +01:00
Corentin Labbe
a246070323 dt-bindings: crypto: Add DT bindings documentation for sun8i-ce Crypto Engine
This patch adds documentation for Device-Tree bindings for the
Crypto Engine cryptographic accelerator driver.

Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Corentin Labbe <clabbe.montjoie@gmail.com>
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
2019-11-01 09:55:01 +01:00
Clément Péron
8abc4c4a15 arm64: dts: allwinner: Add mali GPU supply for H6 boards
Enable and add supply to the Mali GPU node on all the
H6 boards.

Regarding the datasheet the maximum time for supply to reach
its voltage is 32ms.

Signed-off-by: Clément Péron <peron.clem@gmail.com>
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
2019-10-31 13:35:08 +01:00
Clément Péron
4acc24bca1 arm64: dts: allwinner: Add ARM Mali GPU node for H6
Add the mali gpu node to the H6 device-tree.

Signed-off-by: Clément Péron <peron.clem@gmail.com>
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
2019-10-31 13:35:08 +01:00
Mylène Josserand
0c25bfa7fa ARM: dts: sun8i: a83t: a711: Add touchscreen node
Enable a FocalTech EDT-FT5x06 Polytouch touchscreen.

Signed-off-by: Ondrej Jirman <megous@megous.com>
Signed-off-by: Mylène Josserand <mylene.josserand@bootlin.com>
Signed-off-by: Maxime Ripard <mripard@kernel.org>
2019-10-31 13:34:57 +01:00
Maxime Ripard
a0365c09b5 ARM: dts: sun5i: olinuxino micro: Fix AT24 node name
The node name in a device tree is supposed to be the class of the device,
not its model (even if it's a pretty generic one).

This was reported by the DT validation tools.

Signed-off-by: Maxime Ripard <mripard@kernel.org>
2019-10-21 13:20:49 +02:00
Maxime Ripard
27b705fbf6 ARM: dts: sun9i: Add missing watchdog clocks
The watchdog has a clock, but it wasn't always listed.  Add it to the
devicetree where it's missing.

Signed-off-by: Maxime Ripard <mripard@kernel.org>
2019-10-21 13:20:47 +02:00
Alistair Francis
13de0f0a49 arm64: dts: sun50i: sopine-baseboard: Expose serial1, serial2 and serial3
Follow what the sun50i-a64-pine64.dts does and expose all 5 serial
connections.

Signed-off-by: Alistair Francis <alistair@alistair23.me>
Signed-off-by: Maxime Ripard <mripard@kernel.org>
2019-10-21 13:18:27 +02:00
Ondrej Jirman
3511704634 arm64: dts: allwinner: orange-pi-3: Enable UART1 / Bluetooth
The board contains AP6256 WiFi/BT module that has its bluetooth part
connected to SoC's UART1 port. Enable this port, and add node for the
bluetooth device.

Bluetooth part is named bcm4345c5.

You'll need a BCM4345C5.hcd firmware file that can be found in the
Xulongs's repository for H6:

https://github.com/orangepi-xunlong/OrangePiH6_external/tree/master/ap6256

The driver expects the firmware at the following path relative to the
firmware directory:

  brcm/BCM4345C5.hcd

Signed-off-by: Ondrej Jirman <megous@megous.com>
Signed-off-by: Maxime Ripard <mripard@kernel.org>
2019-10-08 07:57:54 +02:00
Ondrej Jirman
cd380e0d00 arm64: dts: allwinner: h6: Add pin configs for uart1
Orange Pi 3 uses UART1 for bluetooth. Add pinconfigs so that we can use
them.

Signed-off-by: Ondrej Jirman <megous@megous.com>
Signed-off-by: Maxime Ripard <mripard@kernel.org>
2019-10-08 07:57:52 +02:00
Jernej Skrabec
6db1aaf4d9 arm64: dts: allwinner: a64: orangepi-win: Enable audio codec
This patch enables internal audio codec on OrangePi Win board by
enabling all relevant nodes and adding appropriate routing. Board has
on-board microphone (MIC1) and 3.5 mm jack with stereo audio and
microphone (MIC2).

Signed-off-by: Jernej Skrabec <jernej.skrabec@siol.net>
Signed-off-by: Maxime Ripard <mripard@kernel.org>
2019-10-07 11:57:06 +02:00
Linus Torvalds
54ecb8f702 Linux 5.4-rc1 v5.4-rc1 2019-09-30 10:35:40 -07:00
Linus Torvalds
bb48a59135 Merge tag 'for-5.4-rc1-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux
Pull btrfs fixes from David Sterba:
 "A bunch of fixes that accumulated in recent weeks, mostly material for
  stable.

  Summary:

   - fix for regression from 5.3 that prevents to use balance convert
     with single profile

   - qgroup fixes: rescan race, accounting leak with multiple writers,
     potential leak after io failure recovery

   - fix for use after free in relocation (reported by KASAN)

   - other error handling fixups"

* tag 'for-5.4-rc1-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux:
  btrfs: qgroup: Fix reserved data space leak if we have multiple reserve calls
  btrfs: qgroup: Fix the wrong target io_tree when freeing reserved data space
  btrfs: Fix a regression which we can't convert to SINGLE profile
  btrfs: relocation: fix use-after-free on dead relocation roots
  Btrfs: fix race setting up and completing qgroup rescan workers
  Btrfs: fix missing error return if writeback for extent buffer never started
  btrfs: adjust dirty_metadata_bytes after writeback failure of extent buffer
  Btrfs: fix selftests failure due to uninitialized i_mode in test inodes
2019-09-30 10:25:24 -07:00
Linus Torvalds
80b29b6b8c Merge tag 'csky-for-linus-5.4-rc1' of git://github.com/c-sky/csky-linux
Pull csky updates from Guo Ren:
 "This round of csky subsystem just some fixups:

   - Fix mb() synchronization problem

   - Fix dma_alloc_coherent with PAGE_SO attribute

   - Fix cache_op failed when cross memory ZONEs

   - Optimize arch_sync_dma_for_cpu/device with dma_inv_range

   - Fix ioremap function losing

   - Fix arch_get_unmapped_area() implementation

   - Fix defer cache flush for 610

   - Support kernel non-aligned access

   - Fix 610 vipt cache flush mechanism

   - Fix add zero_fp fixup perf backtrace panic

   - Move static keyword to the front of declaration

   - Fix csky_pmu.max_period assignment

   - Use generic free_initrd_mem()

   - entry: Remove unneeded need_resched() loop"

* tag 'csky-for-linus-5.4-rc1' of git://github.com/c-sky/csky-linux:
  csky: Move static keyword to the front of declaration
  csky: entry: Remove unneeded need_resched() loop
  csky: Fixup csky_pmu.max_period assignment
  csky: Fixup add zero_fp fixup perf backtrace panic
  csky: Use generic free_initrd_mem()
  csky: Fixup 610 vipt cache flush mechanism
  csky: Support kernel non-aligned access
  csky: Fixup defer cache flush for 610
  csky: Fixup arch_get_unmapped_area() implementation
  csky: Fixup ioremap function losing
  csky: Optimize arch_sync_dma_for_cpu/device with dma_inv_range
  csky/dma: Fixup cache_op failed when cross memory ZONEs
  csky: Fixup dma_alloc_coherent with PAGE_SO attribute
  csky: Fixup mb() synchronization problem
2019-09-30 10:16:17 -07:00
Linus Torvalds
cef0aa0ce8 Merge tag 'armsoc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc
Pull ARM SoC fixes from Olof Johansson:
 "A few fixes that have trickled in through the merge window:

   - Video fixes for OMAP due to panel-dpi driver removal

   - Clock fixes for OMAP that broke no-idle quirks + nfsroot on DRA7

   - Fixing arch version on ASpeed ast2500

   - Two fixes for reset handling on ARM SCMI"

* tag 'armsoc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc:
  ARM: aspeed: ast2500 is ARMv6K
  reset: reset-scmi: add missing handle initialisation
  firmware: arm_scmi: reset: fix reset_state assignment in scmi_domain_reset
  bus: ti-sysc: Remove unpaired sysc_clkdm_deny_idle()
  ARM: dts: logicpd-som-lv: Fix i2c2 and i2c3 Pin mux
  ARM: dts: am3517-evm: Fix missing video
  ARM: dts: logicpd-torpedo-baseboard: Fix missing video
  ARM: omap2plus_defconfig: Fix missing video
  bus: ti-sysc: Fix handling of invalid clocks
  bus: ti-sysc: Fix clock handling for no-idle quirks
2019-09-30 10:04:28 -07:00
Linus Torvalds
cf4f493b10 Merge tag 'trace-v5.4-3' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace
Pull tracing fixes from Steven Rostedt:
 "A few more tracing fixes:

   - Fix a buffer overflow by checking nr_args correctly in probes

   - Fix a warning that is reported by clang

   - Fix a possible memory leak in error path of filter processing

   - Fix the selftest that checks for failures, but wasn't failing

   - Minor clean up on call site output of a memory trace event"

* tag 'trace-v5.4-3' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace:
  selftests/ftrace: Fix same probe error test
  mm, tracing: Print symbol name for call_site in trace events
  tracing: Have error path in predicate_parse() free its allocated memory
  tracing: Fix clang -Wint-in-bool-context warnings in IF_ASSIGN macro
  tracing/probe: Fix to check the difference of nr_args before adding probe
2019-09-30 09:29:53 -07:00
Linus Torvalds
c710364f78 Merge tag 'mmc-v5.4-2' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc
Pull more MMC updates from Ulf Hansson:
 "A couple more updates/fixes for MMC:

   - sdhci-pci: Add Genesys Logic GL975x support

   - sdhci-tegra: Recover loss in throughput for DMA

   - sdhci-of-esdhc: Fix DMA bug"

* tag 'mmc-v5.4-2' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc:
  mmc: host: sdhci-pci: Add Genesys Logic GL975x support
  mmc: tegra: Implement ->set_dma_mask()
  mmc: sdhci: Let drivers define their DMA mask
  mmc: sdhci-of-esdhc: set DMA snooping based on DMA coherence
  mmc: sdhci: improve ADMA error reporting
2019-09-30 09:21:53 -07:00
Krzysztof Wilczynski
9af032a301 csky: Move static keyword to the front of declaration
Move the static keyword to the front of declaration of
csky_pmu_of_device_ids, and resolve the following compiler
warning that can be seen when building with warnings
enabled (W=1):

arch/csky/kernel/perf_event.c:1340:1: warning:
  ‘static’ is not at beginning of declaration [-Wold-style-declaration]

Signed-off-by: Krzysztof Wilczynski <kw@linux.com>
Signed-off-by: Guo Ren <guoren@kernel.org>
2019-09-30 11:50:49 +08:00
Valentin Schneider
a2139d3b4f csky: entry: Remove unneeded need_resched() loop
Since the enabling and disabling of IRQs within preempt_schedule_irq()
is contained in a need_resched() loop, we don't need the outer arch
code loop.

Signed-off-by: Valentin Schneider <valentin.schneider@arm.com>
Signed-off-by: Guo Ren <guoren@kernel.org>
2019-09-30 11:49:47 +08:00
Linus Torvalds
97f9a3c4ee Merge tag 'char-misc-5.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc
Pull Documentation/process update from Greg KH:
 "Here are two small Documentation/process/embargoed-hardware-issues.rst
  file updates that missed my previous char/misc pull request.

  The first one adds an Intel representative for the process, and the
  second one cleans up the text a bit more when it comes to how the
  disclosure rules work, as it was a bit confusing to some companies"

* tag 'char-misc-5.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc:
  Documentation/process: Clarify disclosure rules
  Documentation/process: Volunteer as the ambassador for Intel
2019-09-29 19:52:52 -07:00
Linus Torvalds
1eb80d6ffb Merge branch 'work.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Pull more vfs updates from Al Viro:
 "A couple of misc patches"

* 'work.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
  afs dynroot: switch to simple_dir_operations
  fs/handle.c - fix up kerneldoc
2019-09-29 19:42:07 -07:00
Linus Torvalds
7edee5229c Merge tag '5.4-rc-smb3-fixes' of git://git.samba.org/sfrench/cifs-2.6
Pull more cifs updates from Steve French:
 "Fixes from the recent SMB3 Test events and Storage Developer
  Conference (held the last two weeks).

  Here are nine smb3 patches including an important patch for debugging
  traces with wireshark, with three patches marked for stable.

  Additional fixes from last week to better handle some newly discovered
  reparse points, and a fix the create/mkdir path for setting the mode
  more atomically (in SMB3 Create security descriptor context), and one
  for path name processing are still being tested so are not included
  here"

* tag '5.4-rc-smb3-fixes' of git://git.samba.org/sfrench/cifs-2.6:
  CIFS: Fix oplock handling for SMB 2.1+ protocols
  smb3: missing ACL related flags
  smb3: pass mode bits into create calls
  smb3: Add missing reparse tags
  CIFS: fix max ea value size
  fs/cifs/sess.c: Remove set but not used variable 'capabilities'
  fs/cifs/smb2pdu.c: Make SMB2_notify_init static
  smb3: fix leak in "open on server" perf counter
  smb3: allow decryption keys to be dumped by admin for debugging
2019-09-29 19:37:32 -07:00
Mao Han
3a09d8e289 csky: Fixup csky_pmu.max_period assignment
The csky_pmu.max_period has type u64, and BIT() can only return
32 bits unsigned long on C-SKY. The initialization for max_period
will be incorrect when count_width is bigger than 32.

Use BIT_ULL()

Signed-off-by: Mao Han <han_mao@c-sky.com>
Signed-off-by: Guo Ren <ren_guo@c-sky.com>
2019-09-30 10:26:33 +08:00
Guo Ren
48ede51fd9 csky: Fixup add zero_fp fixup perf backtrace panic
We need set fp zero to let backtrace know the end. The patch fixup perf
callchain panic problem, because backtrace didn't know what is the end
of fp.

Signed-off-by: Guo Ren <ren_guo@c-sky.com>
Reported-by: Mao Han <han_mao@c-sky.com>
2019-09-30 10:26:32 +08:00
Mike Rapoport
fdbdcddc2c csky: Use generic free_initrd_mem()
The csky implementation of free_initrd_mem() is an open-coded version of
free_reserved_area() without poisoning.

Remove it and make csky use the generic version of free_initrd_mem().

Signed-off-by: Mike Rapoport <rppt@linux.ibm.com>
Signed-off-by: Guo Ren <guoren@kernel.org>
2019-09-30 10:26:24 +08:00
Linus Torvalds
3f2dc2798b Merge branch 'entropy'
Merge active entropy generation updates.

This is admittedly partly "for discussion".  We need to have a way
forward for the boot time deadlocks where user space ends up waiting for
more entropy, but no entropy is forthcoming because the system is
entirely idle just waiting for something to happen.

While this was triggered by what is arguably a user space bug with
GDM/gnome-session asking for secure randomness during early boot, when
they didn't even need any such truly secure thing, the issue ends up
being that our "getrandom()" interface is prone to that kind of
confusion, because people don't think very hard about whether they want
to block for sufficient amounts of entropy.

The approach here-in is to decide to not just passively wait for entropy
to happen, but to start actively collecting it if it is missing.  This
is not necessarily always possible, but if the architecture has a CPU
cycle counter, there is a fair amount of noise in the exact timings of
reasonably complex loads.

We may end up tweaking the load and the entropy estimates, but this
should be at least a reasonable starting point.

As part of this, we also revert the revert of the ext4 IO pattern
improvement that ended up triggering the reported lack of external
entropy.

* getrandom() active entropy waiting:
  Revert "Revert "ext4: make __ext4_get_inode_loc plug""
  random: try to actively add entropy rather than passively wait for it
2019-09-29 19:25:39 -07:00
Linus Torvalds
02f03c4206 Revert "Revert "ext4: make __ext4_get_inode_loc plug""
This reverts commit 72dbcf7215.

Instead of waiting forever for entropy that may just not happen, we now
try to actively generate entropy when required, and are thus hopefully
avoiding the problem that caused the nice ext4 IO pattern fix to be
reverted.

So revert the revert.

Cc: Ahmed S. Darwish <darwish.07@gmail.com>
Cc: Ted Ts'o <tytso@mit.edu>
Cc: Willy Tarreau <w@1wt.eu>
Cc: Alexander E. Patrakov <patrakov@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2019-09-29 17:59:23 -07:00
Linus Torvalds
50ee7529ec random: try to actively add entropy rather than passively wait for it
For 5.3 we had to revert a nice ext4 IO pattern improvement, because it
caused a bootup regression due to lack of entropy at bootup together
with arguably broken user space that was asking for secure random
numbers when it really didn't need to.

See commit 72dbcf7215 (Revert "ext4: make __ext4_get_inode_loc plug").

This aims to solve the issue by actively generating entropy noise using
the CPU cycle counter when waiting for the random number generator to
initialize.  This only works when you have a high-frequency time stamp
counter available, but that's the case on all modern x86 CPU's, and on
most other modern CPU's too.

What we do is to generate jitter entropy from the CPU cycle counter
under a somewhat complex load: calling the scheduler while also
guaranteeing a certain amount of timing noise by also triggering a
timer.

I'm sure we can tweak this, and that people will want to look at other
alternatives, but there's been a number of papers written on jitter
entropy, and this should really be fairly conservative by crediting one
bit of entropy for every timer-induced jump in the cycle counter.  Not
because the timer itself would be all that unpredictable, but because
the interaction between the timer and the loop is going to be.

Even if (and perhaps particularly if) the timer actually happens on
another CPU, the cacheline interaction between the loop that reads the
cycle counter and the timer itself firing is going to add perturbations
to the cycle counter values that get mixed into the entropy pool.

As Thomas pointed out, with a modern out-of-order CPU, even quite simple
loops show a fair amount of hard-to-predict timing variability even in
the absense of external interrupts.  But this tries to take that further
by actually having a fairly complex interaction.

This is not going to solve the entropy issue for architectures that have
no CPU cycle counter, but it's not clear how (and if) that is solvable,
and the hardware in question is largely starting to be irrelevant.  And
by doing this we can at least avoid some of the even more contentious
approaches (like making the entropy waiting time out in order to avoid
the possibly unbounded waiting).

Cc: Ahmed Darwish <darwish.07@gmail.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Theodore Ts'o <tytso@mit.edu>
Cc: Nicholas Mc Guire <hofrat@opentech.at>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Kees Cook <keescook@chromium.org>
Cc: Willy Tarreau <w@1wt.eu>
Cc: Alexander E. Patrakov <patrakov@gmail.com>
Cc: Lennart Poettering <mzxreary@0pointer.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2019-09-29 17:38:52 -07:00
Olof Johansson
9bfd7319e8 Merge tag 'fixes-5.4-merge-window' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into arm/fixes
Fixes for omap variants

Few fixes for ti-sysc interconnect target module driver for no-idle
quirks that caused nfsroot to fail on some dra7 boards.

And let's fixes to get LCD working again for logicpd board that got
broken a while back with removal of panel-dpi driver. We need to now
use generic CONFIG_DRM_PANEL_SIMPLE instead.

* tag 'fixes-5.4-merge-window' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap:
  bus: ti-sysc: Remove unpaired sysc_clkdm_deny_idle()
  ARM: dts: logicpd-som-lv: Fix i2c2 and i2c3 Pin mux
  ARM: dts: am3517-evm: Fix missing video
  ARM: dts: logicpd-torpedo-baseboard: Fix missing video
  ARM: omap2plus_defconfig: Fix missing video
  bus: ti-sysc: Fix handling of invalid clocks
  bus: ti-sysc: Fix clock handling for no-idle quirks

Link: https://lore.kernel.org/r/pull-1568819401-72461@atomide.com
Signed-off-by: Olof Johansson <olof@lixom.net>
2019-09-29 11:20:48 -07:00
Olof Johansson
a4207a1c5e Merge tag 'scmi-fixes-5.4' of git://git.kernel.org/pub/scm/linux/kernel/git/sudeep.holla/linux into arm/fixes
ARM SCMI fixes for v5.4

Couple of fixes: one in scmi reset driver initialising missed scmi handle
and an other in scmi reset API implementation fixing the assignment of
reset state

* tag 'scmi-fixes-5.4' of git://git.kernel.org/pub/scm/linux/kernel/git/sudeep.holla/linux:
  reset: reset-scmi: add missing handle initialisation
  firmware: arm_scmi: reset: fix reset_state assignment in scmi_domain_reset

Link: https://lore.kernel.org/r/20190918142139.GA4370@bogus
Signed-off-by: Olof Johansson <olof@lixom.net>
2019-09-29 11:20:41 -07:00
Linus Torvalds
a3c0e7b1fe Merge tag 'libnvdimm-fixes-5.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm
More libnvdimm updates from Dan Williams:

 - Complete the reworks to interoperate with powerpc dynamic huge page
   sizes

 - Fix a crash due to missed accounting for the powerpc 'struct
   page'-memmap mapping granularity

 - Fix badblock initialization for volatile (DRAM emulated) pmem ranges

 - Stop triggering request_key() notifications to userspace when
   NVDIMM-security is disabled / not present

 - Miscellaneous small fixups

* tag 'libnvdimm-fixes-5.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm:
  libnvdimm/region: Enable MAP_SYNC for volatile regions
  libnvdimm: prevent nvdimm from requesting key when security is disabled
  libnvdimm/region: Initialize bad block for volatile namespaces
  libnvdimm/nfit_test: Fix acpi_handle redefinition
  libnvdimm/altmap: Track namespace boundaries in altmap
  libnvdimm: Fix endian conversion issues 
  libnvdimm/dax: Pick the right alignment default when creating dax devices
  powerpc/book3s64: Export has_transparent_hugepage() related functions.
2019-09-29 10:33:41 -07:00