Commit Graph

79209 Commits

Author SHA1 Message Date
Steven Rostedt (Red Hat)
b7f0c959ed tracing: Pass trace_array into trace_buffer_unlock_commit()
In preparation for having trace options be per instance, the trace_array
needs to be passed to the trace_buffer_unlock_commit(). The
trace_event_buffer_lock_reserve() already passes in the trace_event_file
where the trace_array can be derived from.

Also added a "__init" to the boot up test event plus function tracing
function function_test_events_call().

Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
2015-09-25 17:38:44 -04:00
Laurent Pinchart
40a78f36fc [media] v4l: atmel-isi: Remove support for platform data
All in-tree users have migrated to DT, remove support for platform data.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
[josh.wu@atmel.com: squash the commit to remove the unused variable: dev]
Signed-off-by: Josh Wu <josh.wu@atmel.com>
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>

Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
2015-09-25 17:37:07 -03:00
Josh Wu
ad5f9d1968 [media] atmel-isi: setup the ISI_CFG2 register directly
In the function configure_geometry(), we will setup the ISI CFG2
according to the sensor output format.

It make no sense to just read back the CFG2 register and just set part
of it.

So just set up this register directly makes things simpler.
Currently only support YUV format from camera sensor.

Signed-off-by: Josh Wu <josh.wu@atmel.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
2015-09-25 17:35:15 -03:00
Eric Dumazet
1b70e977ce inet: constify inet_rtx_syn_ack() sock argument
SYNACK packets are sent on behalf on unlocked listeners
or fastopen sockets. Mark socket as const to catch future changes
that might break the assumption.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-09-25 13:00:39 -07:00
Eric Dumazet
ea3bea3a1d tcp/dccp: constify rtx_synack() and friends
This is done to make sure we do not change listener socket
while sending SYNACK packets while socket lock is not held.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-09-25 13:00:39 -07:00
Eric Dumazet
0f935dbedc tcp: constify tcp_v{4|6}_send_synack() socket argument
This documents fact that listener lock might not be held
at the time SYNACK are sent.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-09-25 13:00:39 -07:00
Eric Dumazet
1c1e9d2b67 ipv6: constify ip6_xmit() sock argument
This is to document that socket lock might not be held at this point.

skb_set_owner_w() and ipv6_local_error() are using proper atomic ops
or spinlocks, so we promote the socket to non const when calling them.

netfilter hooks should never assume socket lock is held,
we also promote the socket to non const.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-09-25 13:00:38 -07:00
Eric Dumazet
5d062de7f8 tcp: constify tcp_make_synack() socket argument
listener socket is not locked when tcp_make_synack() is called.

We better make sure no field is written.

There is one exception : Since SYNACK packets are attached to the listener
at this moment (or SYN_RECV child in case of Fast Open),
sock_wmalloc() needs to update sk->sk_wmem_alloc, but this is done using
atomic operations so this is safe.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-09-25 13:00:38 -07:00
Eric Dumazet
cfe673b0ae ip: constify ip_build_and_send_pkt() socket argument
This function is used to build and send SYNACK packets,
possibly on behalf of unlocked listener socket.

Make sure we did not miss a write by making this socket const.

We no longer can use ip_select_ident() and have to either
set iph->id to 0 or directly call __ip_select_ident()

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-09-25 13:00:38 -07:00
Eric Dumazet
b83e3deb97 tcp: md5: constify tcp_md5_do_lookup() socket argument
When TCP new listener is done, these functions will be called
without socket lock being held. Make sure they don't change
anything.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-09-25 13:00:38 -07:00
Eric Dumazet
4e3f5d727d inet: constify ip_dont_fragment() arguments
ip_dont_fragment() can accept const socket and dst

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-09-25 13:00:37 -07:00
Eric Dumazet
30d50c61df ipv6: constify inet6_csk_route_req() socket argument
socket is not modified, make it const so that callers can
do the same if they need.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-09-25 13:00:37 -07:00
Eric Dumazet
3aef934f4d ipv6: constify ip6_dst_lookup_{flow|tail}() sock arguments
ip6_dst_lookup_flow() and ip6_dst_lookup_tail() do not touch
socket, lets add a const qualifier.

This will permit the same change in inet6_csk_route_req()

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-09-25 13:00:37 -07:00
Eric Dumazet
e5895bc600 inet: constify inet_csk_route_req() socket argument
This is used by TCP listener core, and listener socket shall
not be modified by inet_csk_route_req().

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-09-25 13:00:37 -07:00
Eric Dumazet
6f9c961546 inet: constify ip_route_output_flow() socket argument
Very soon, TCP stack might call inet_csk_route_req(), which
calls inet_csk_route_req() with an unlocked listener socket,
so we need to make sure ip_route_output_flow() is not trying to
change any field from its socket argument.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-09-25 13:00:37 -07:00
Eric Dumazet
b1964b5fce tcp: constify tcp_openreq_init_rwin()
Soon, listener socket wont be locked when tcp_openreq_init_rwin()
is called. We need to read socket fields once, as their value
could change under us.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-09-25 13:00:36 -07:00
Eric Dumazet
b40cf18ef7 tcp: constify listener socket in tcp_v[46]_init_req()
Soon, listener socket spinlock will no longer be held,
add const arguments to tcp_v[46]_init_req() to make clear these
functions can not mess socket fields.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-09-25 13:00:36 -07:00
Steven Rostedt (Red Hat)
41907416bc tracing: Remove unused function trace_current_buffer_lock_reserve()
trace_current_buffer_lock_reserve() is not used by anything. Might as well
get rid of it.

Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
2015-09-25 15:37:31 -04:00
Linus Torvalds
101688f534 Merge tag 'nfs-for-4.3-2' of git://git.linux-nfs.org/projects/trondmy/linux-nfs
Pull NFS client bugfixes from Trond Myklebust:
 "Highlights include:

  Stable patches:
   - fix v4.2 SEEK on files over 2 gigs
   - Fix a layout segment reference leak when pNFS I/O falls back to inband I/O.
   - Fix recovery of recalled read delegations

  Bugfixes:
   - Fix a case where NFSv4 fails to send CLOSE after a server reboot
   - Fix sunrpc to wait for connections to complete before retrying
   - Fix sunrpc races between transport connect/disconnect and shutdown
   - Fix an infinite loop when layoutget fail with BAD_STATEID
   - nfs/filelayout: Fix NULL reference caused by double freeing of fh_array
   - Fix a bogus WARN_ON_ONCE() in O_DIRECT when layout commit_through_mds is set
   - Fix layoutreturn/close ordering issues"

* tag 'nfs-for-4.3-2' of git://git.linux-nfs.org/projects/trondmy/linux-nfs:
  NFS41: make close wait for layoutreturn
  NFS: Skip checking ds_cinfo.buckets when lseg's commit_through_mds is set
  NFSv4.x/pnfs: Don't try to recover stateids twice in layoutget
  NFSv4: Recovery of recalled read delegations is broken
  NFS: Fix an infinite loop when layoutget fail with BAD_STATEID
  NFS: Do cleanup before resetting pageio read/write to mds
  SUNRPC: xs_sock_mark_closed() does not need to trigger socket autoclose
  SUNRPC: Lock the transport layer on shutdown
  nfs/filelayout: Fix NULL reference caused by double freeing of fh_array
  SUNRPC: Ensure that we wait for connections to complete before retrying
  SUNRPC: drop null test before destroy functions
  nfs: fix v4.2 SEEK on files over 2 gigs
  SUNRPC: Fix races between socket connection and destroy code
  nfs: fix pg_test page count calculation
  Failing to send a CLOSE if file is opened WRONLY and server reboots on a 4.x mount
2015-09-25 11:33:52 -07:00
Sagi Grimberg
c6790aa9f4 IB/mlx5: Remove support for IB_DEVICE_LOCAL_DMA_LKEY
Commit 96249d70dd ("IB/core: Guarantee that a local_dma_lkey
is available") allows ULPs that make use of the local dma key to keep
working as before by allocating a DMA MR with local permissions and
converted these consumers to use the MR associated with the PD
rather then device->local_dma_lkey.

ConnectIB has some known issues with memory registration
using the local_dma_lkey (SEND, RDMA, RECV seems to work ok).

Thus don't expose support for it (remove device->local_dma_lkey
setting), and take advantage of the above commit such that no regression
is introduced to working systems.

The local_dma_lkey support will be restored in CX4 depending on FW
capability query.

Signed-off-by: Sagi Grimberg <sagig@mellanox.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
2015-09-25 10:46:51 -04:00
Takashi Iwai
010cf269a4 Merge branch 'topic/drm-sync-audio-rate' into for-next 2015-09-25 10:07:55 +02:00
Libin Yang
7e8275c2f2 drm/i915: set proper N/CTS in modeset
When modeset occurs and the TMDS frequency is set to some
speical values, the N/CTS need to be set manually if audio
is playing.

Signed-off-by: Libin Yang <libin.yang@intel.com>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-09-25 10:05:05 +02:00
Libin Yang
5334240c30 drm/i915: Add audio sync_audio_rate callback
Add the sync_audio_rate callback.

With the callback, audio driver can trigger
i915 driver to set the proper N/CTS or N/M
based on different sample rates.

Signed-off-by: Libin Yang <libin.yang@intel.com>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-09-25 10:04:40 +02:00
Takashi Iwai
0b2c8c12f9 Merge tag 'asoc-v4.3-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-next
ASoC: Updates for v4.4

A first batch of updates targetted at v4.4.  There are no substantial
core fixes here, the biggest block of changes is updates to the rcar
drivers and the addition of a CODEC driver for the AK4613.
2015-09-25 08:33:11 +02:00
Nicholas Bellinger
eeeb952223 target: Propigate backend read-only to core_tpg_add_lun
This patch adds a DF_READ_ONLY flag that is used by IBLOCK to
signal when a backend has been set to read-only mode, in order
to propigate read-only status up to core_tpg_add_lun() for all
future LUN fabric exports.

With this is place, existing emulation for reporting read-only
in spc_emulate_modesense() and normal transport_lookup_cmd_lun()
TCM_WRITE_PROTECTED status checking just works as expected.

Reported-by: Joeue Deng <joeue404@gmail.com>
Reported-by: Andy Grover <agrover@redhat.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2015-09-24 23:17:21 -07:00
Russell King
38737e490d phy: add phy_device_remove()
Add a phy_device_remove() function to complement phy_device_register(),
which undoes the effects of phy_device_register() by removing the phy
device from visibility, but not freeing it.

This allows these details to be moved out of the mdio bus code into
the phy code where this action belongs.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-09-24 23:04:53 -07:00
Russell King
3e3aaf6494 phy: fix mdiobus module safety
Re-implement the mdiobus module refcounting to ensure that we actually
ensure that the mdiobus module code does not go away while we might call
into it.

The old scheme using bus->dev.driver was buggy, because bus->dev is a
class device which never has a struct device_driver associated with it,
and hence the associated code trying to obtain a refcount did nothing
useful.

Instead, take the approach that other subsystems do: pass the module
when calling mdiobus_register(), and record that in the mii_bus struct.
When we need to increment the module use count in the phy code, use
this stored pointer.  When the phy is deteched, drop the module
refcount, remembering that the phy device might go away at that point.

This doesn't stop the mii_bus going away while there are in-use phys -
it merely stops the underlying code vanishing.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-09-24 23:04:52 -07:00
Jiri Pirko
f623ab7f51 switchdev: reduce transaction phase enum down to a boolean
Now, since we have only 2 values for transaction phase, just use bool.

Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-09-24 22:59:22 -07:00
Jiri Pirko
9f6467cf22 switchdev: remove "ABORT" transaction phase
No longer used by drivers, as transaction queue with item destructors
takes care of abort phase internally in switchdev code. So kill it.

Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-09-24 22:59:22 -07:00
Jiri Pirko
2b8a61a6fd switchdev: remove "NONE" transaction phase
Shouldn't have been there in the first place. Now it is unused, kill it.

Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-09-24 22:59:22 -07:00
Jiri Pirko
8bdb427206 switchdev: add switchdev_trans_ph_prepare/commit helpers
Add helpers which should be used int attr_set/obj_add switchdev ops to
check the phase of transaction.

Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-09-24 22:59:21 -07:00
Jiri Pirko
f8db83486e switchdev: move transaction phase enum under transaction structure
Before it disappears completely, move transaction phase enum under
transaction structure and make attr/obj structures a bit cleaner.

Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-09-24 22:59:21 -07:00
Jiri Pirko
7ea6eb3f56 switchdev: introduce transaction item queue for attr_set and obj_add
Now, the memory allocation in prepare/commit state is done separatelly
in each driver (rocker). Introduce the similar mechanism in generic
switchdev code, in form of queue. That can be used not only for memory
allocations, but also for different items. Abort item destruction
is handled as well.

Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-09-24 22:59:21 -07:00
Jiri Pirko
69f5df491e switchdev: rename "trans" to "trans_ph".
This is temporary, name "trans" will be used for something else and
"trans_ph" will eventually disappear.

Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-09-24 22:59:21 -07:00
Linus Torvalds
ced255c0c5 Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux
Pull thermal management fixes from Zhang Rui:

 - Power allocator governor changes to allow binding on thermal zones
   with missing power estimates information.  From Javi Merino.

 - Add compile test flags on thermal drivers that allow it without
   producing compilation errors.  From Eduardo Valentin.

 - Fixes around memory allocation on cpu_cooling.  From Javi Merino.

 - Fix on db8500 cpufreq code to allow autoload.  From Luis de
   Bethencourt.

 - Maintainer entries for cpu cooling device

* 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux:
  thermal: power_allocator: exit early if there are no cooling devices
  thermal: power_allocator: don't require tzp to be present for the thermal zone
  thermal: power_allocator: relax the requirement of two passive trip points
  thermal: power_allocator: relax the requirement of a sustainable_power in tzp
  thermal: Add a function to get the minimum power
  thermal: cpu_cooling: free power table on error or when unregistering
  thermal: cpu_cooling: don't call kcalloc() under rcu_read_lock
  thermal: db8500_cpufreq_cooling: Fix module autoload for OF platform driver
  thermal: cpu_cooling: Add MAINTAINERS entry
  thermal: ti-soc: Kconfig fix to avoid menu showing wrongly
  thermal: ti-soc: allow compile test
  thermal: qcom_spmi: allow compile test
  thermal: exynos: allow compile test
  thermal: armada: allow compile test
  thermal: dove: allow compile test
  thermal: kirkwood: allow compile test
  thermal: rockchip: allow compile test
  thermal: spear: allow compile test
  thermal: hisi: allow compile test
  thermal: Fix thermal_zone_of_sensor_register to match documentation
2015-09-24 20:14:26 -07:00
Mika Westerberg
3f5c8d3187 device property: Add fwnode_property_match_string()
Sometimes it is useful to be able to extract an index of certain string
value from an array of strings. A typical use case is to give a name to a
DMA channel, PWM, clock and so on.

Provide an implementation using unified device property accessors that
follows of_property_match_string() but works for all supported fwnodes.

Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2015-09-25 02:00:19 +02:00
Pablo Neira Ayuso
c3456026ad Merge tag 'ipvs2-for-v4.4' of https://git.kernel.org/pub/scm/linux/kernel/git/horms/ipvs-next
Simon Horman says:

====================
Second Round of IPVS Updates for v4.4

please consider these bug fixes and extensive clean-ups of IPVS
from Eric Biederman for v4.4.

His excellent description of the changes, which is part of an even larger
set of clean-up work, is as follows:

  I am gradually working my way through the netfilter stack passing struct
  down into the netfilter hooks and from the netfilter hooks and from there
  down into the functions that actually care.  This removes the need for
  netfilter functions to guess how to figure out how to compute which
  network namespace they are in and instead provides a simple and reliable
  method to do so.

  The cleanups stand on their own but this is part of a larger effort to
  have routes with an output device that is not in the current network
  namespace.

  The IPVS code has been a bit more of a challenge than most.  Just passing
  struct net through to where it is needed did not feel clean to me.  The
  practical issue is that the ipvs code in most places actually wants
  struct netns_ipvs and not struct net.

  So as part of this process I have turned the relationship between struct
  net and the structs netns_ipvs, ip_vs_conn_param, ip_vs_conn, and
  ip_vs_service inside out.  I have modified the ipvs functions to take a
  struct netns_ipvs not a struct net.  The net is code with fewer
  conversions from one type of structure to another.  I did wind up adding
  a struct netns_ipvs parameter to quite a few functions that did not have
  it before so I could pass the structure down from the netfilter hooks to
  where it is actually needed to avoid guessing.

  I have broken up the work in a bunch of small patches so there is at
  least a chance and reviewing that each step I took is correct.  The
  series compiles at each step so bisecting it should not be a problem if
  something weird comes up.

  The first two changes in this series are actually bug fixes.  The first
  is a compile fix for a bug in sctp that came in, in the last round of
  ipvs changes merged into nf-next.  The second fixes an older bug where in
  pathological circumstances the wrong network namespace could be used when
  a proc file is written to.

  The rest of the patchset is a bunch of boring changes getting pushing
  struct netns_ipvs (and by extension ipvs->net) where it needs to be.
  Either by replacing struct net pointers or adding new struct netns_ipvs
  pointers.  With a handful of other minor cleanups (like removing
  skb_net).

I have decided include the bug fixes in this pull request. Patch one
relates to a bug that was added to nf-next recently and is thus not
applicable to nf . Patch two could arguably be promoted to a fix for v4.3
and stable though it does not appear to be severe enough to warrant that
course of action; let me know if you would like me to reconsider.
====================

Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2015-09-25 01:38:58 +02:00
Linus Torvalds
bfbaa60d18 Merge branch 'akpm' (patches from Andrew)
Merge misc fixes from Andrew Morton:
 "15 fixes"

* emailed patches from Andrew Morton <akpm@linux-foundation.org>:
  ocfs2/dlm: fix deadlock when dispatch assert master
  membarrier: clean up selftest
  vmscan: fix sane_reclaim helper for legacy memcg
  lib/iommu-common.c: do not try to deref a null iommu->lazy_flush() pointer when n < pool->hint
  x86, efi, kasan: #undef memset/memcpy/memmove per arch
  mm: migrate: hugetlb: putback destination hugepage to active list
  mm, dax: VMA with vm_ops->pfn_mkwrite wants to be write-notified
  userfaultfd: register uapi generic syscall (aarch64)
  userfaultfd: selftest: don't error out if pthread_mutex_t isn't identical
  userfaultfd: selftest: return an error if BOUNCE_VERIFY fails
  userfaultfd: selftest: avoid my_bcmp false positives with powerpc
  userfaultfd: selftest: only warn if __NR_userfaultfd is undefined
  userfaultfd: selftest: headers fixup
  userfaultfd: selftests: vm: pick up sanitized kernel headers
  userfaultfd: revert "userfaultfd: waitqueue: add nr wake parameter to __wake_up_locked_key"
2015-09-24 14:31:40 -07:00
Jiri Benc
b194f30c61 lwtunnel: remove source and destination UDP port config option
The UDP tunnel config is asymmetric wrt. to the ports used. The source and
destination ports from one direction of the tunnel are not related to the
ports of the other direction. We need to be able to respond to ARP requests
using the correct ports without involving routing.

As the consequence, UDP ports need to be fixed property of the tunnel
interface and cannot be set per route. Remove the ability to set ports per
route. This is still okay to do, as no kernel has been released with these
attributes yet.

Note that the ability to specify source and destination ports is preserved
for other users of the lwtunnel API which don't use routes for tunnel key
specification (like openvswitch).

If in the future we rework ARP handling to allow port specification, the
attributes can be added back.

Signed-off-by: Jiri Benc <jbenc@redhat.com>
Acked-by: Thomas Graf <tgraf@suug.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-09-24 14:31:37 -07:00
Jiri Benc
63d008a4e9 ipv4: send arp replies to the correct tunnel
When using ip lwtunnels, the additional data for xmit (basically, the actual
tunnel to use) are carried in ip_tunnel_info either in dst->lwtstate or in
metadata dst. When replying to ARP requests, we need to send the reply to
the same tunnel the request came from. This means we need to construct
proper metadata dst for ARP replies.

We could perform another route lookup to get a dst entry with the correct
lwtstate. However, this won't always ensure that the outgoing tunnel is the
same as the incoming one, and it won't work anyway for IPv4 duplicate
address detection.

The only thing to do is to "reverse" the ip_tunnel_info.

Signed-off-by: Jiri Benc <jbenc@redhat.com>
Acked-by: Thomas Graf <tgraf@suug.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-09-24 14:31:36 -07:00
Pravin B Shelar
6ae459bdaa skbuff: Fix skb checksum flag on skb pull
VXLAN device can receive skb with checksum partial. But the checksum
offset could be in outer header which is pulled on receive. This results
in negative checksum offset for the skb. Such skb can cause the assert
failure in skb_checksum_help(). Following patch fixes the bug by setting
checksum-none while pulling outer header.

Following is the kernel panic msg from old kernel hitting the bug.

------------[ cut here ]------------
kernel BUG at net/core/dev.c:1906!
RIP: 0010:[<ffffffff81518034>] skb_checksum_help+0x144/0x150
Call Trace:
<IRQ>
[<ffffffffa0164c28>] queue_userspace_packet+0x408/0x470 [openvswitch]
[<ffffffffa016614d>] ovs_dp_upcall+0x5d/0x60 [openvswitch]
[<ffffffffa0166236>] ovs_dp_process_packet_with_key+0xe6/0x100 [openvswitch]
[<ffffffffa016629b>] ovs_dp_process_received_packet+0x4b/0x80 [openvswitch]
[<ffffffffa016c51a>] ovs_vport_receive+0x2a/0x30 [openvswitch]
[<ffffffffa0171383>] vxlan_rcv+0x53/0x60 [openvswitch]
[<ffffffffa01734cb>] vxlan_udp_encap_recv+0x8b/0xf0 [openvswitch]
[<ffffffff8157addc>] udp_queue_rcv_skb+0x2dc/0x3b0
[<ffffffff8157b56f>] __udp4_lib_rcv+0x1cf/0x6c0
[<ffffffff8157ba7a>] udp_rcv+0x1a/0x20
[<ffffffff8154fdbd>] ip_local_deliver_finish+0xdd/0x280
[<ffffffff81550128>] ip_local_deliver+0x88/0x90
[<ffffffff8154fa7d>] ip_rcv_finish+0x10d/0x370
[<ffffffff81550365>] ip_rcv+0x235/0x300
[<ffffffff8151ba1d>] __netif_receive_skb+0x55d/0x620
[<ffffffff8151c360>] netif_receive_skb+0x80/0x90
[<ffffffff81459935>] virtnet_poll+0x555/0x6f0
[<ffffffff8151cd04>] net_rx_action+0x134/0x290
[<ffffffff810683d8>] __do_softirq+0xa8/0x210
[<ffffffff8162fe6c>] call_softirq+0x1c/0x30
[<ffffffff810161a5>] do_softirq+0x65/0xa0
[<ffffffff810687be>] irq_exit+0x8e/0xb0
[<ffffffff81630733>] do_IRQ+0x63/0xe0
[<ffffffff81625f2e>] common_interrupt+0x6e/0x6e

Reported-by: Anupam Chanda <achanda@vmware.com>
Signed-off-by: Pravin B Shelar <pshelar@nicira.com>
Acked-by: Tom Herbert <tom@herbertland.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-09-24 14:09:13 -07:00
Tejun Heo
c0522908d2 cgroup: Merge branch 'for-4.3-fixes' into for-4.4
Pull to receive 9badce000e ("cgroup, writeback: don't enable cgroup
writeback on traditional hierarchies").  The commit adds
cgroup_on_dfl() usages in include/linux/backing-dev.h thus causing a
silent conflict with 9e10a130d9 ("cgroup: replace cgroup_on_dfl()
tests in controllers with cgroup_subsys_on_dfl()").  The conflict is
fixed during this merge.

Signed-off-by: Tejun Heo <tj@kernel.org>
2015-09-24 16:59:19 -04:00
Tejun Heo
9badce000e cgroup, writeback: don't enable cgroup writeback on traditional hierarchies
inode_cgwb_enabled() gates cgroup writeback support.  If it returns
true, each inode is attached to the corresponding memory domain which
gets mapped to io domain.  It currently only tests whether the
filesystem and bdi support cgroup writeback; however, cgroup writeback
support doesn't work on traditional hierarchies and thus it should
also test whether memcg and iocg are on the default hierarchy.

This caused traditional hierarchy setups to hit the cgroup writeback
path inadvertently and ended up creating separate writeback domains
for each memcg and mapping them all to the root iocg uncovering a
couple issues in the cgroup writeback path.

cgroup writeback was never meant to be enabled on traditional
hierarchies.  Make inode_cgwb_enabled() test whether both memcg and
iocg are on the default hierarchy.

Signed-off-by: Tejun Heo <tj@kernel.org>
Reported-by: Artem Bityutskiy <dedekind1@gmail.com>
Reported-by: Dexuan Cui <decui@microsoft.com>
Link: http://lkml.kernel.org/g/1443012552.19983.209.camel@gmail.com
Link: http://lkml.kernel.org/g/f30d4a6aa8a546ff88f73021d026a453@SIXPR30MB031.064d.mgd.msft.net
2015-09-24 16:48:52 -04:00
Jiri Benc
38cf595b19 ipv6: remove unused neigh parameter from ndisc functions
Since commit 12fd84f438 ("ipv6: Remove unused neigh argument for
icmp6_dst_alloc() and its callers."), the neigh parameter of ndisc_send_na
and ndisc_send_ns is unused.

CC: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: Jiri Benc <jbenc@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-09-24 12:26:08 -07:00
Jiri Benc
92c14d9b5e genetlink: simplify genl_notify
The genl_notify function has too many arguments for no real reason - all
callers use genl_info to get them anyway. Just pass the genl_info down to
genl_notify.

Signed-off-by: Jiri Benc <jbenc@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-09-24 12:25:23 -07:00
Alexander Aring
f856f21dbc ieee802154: remove unnecessary includes
This patch removes some unnecessary includes from ieee802154 header,
which was introduced by commit b609fb54adfa ("ieee802154: add helpers for
frame control checks").

Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2015-09-24 20:42:37 +02:00
Linus Torvalds
d5fc4f555d Merge tag 'spi-fix-v4.3-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi
Pull spi fixes from Mark Brown:
 "A disappointingly large collection of fixes for SPI issues, though
  almost all in drivers (and there mainly the newly added Mediatek
  driver) and the core fixes are documentation and error handling.

  The driver fixes are all of the usual 'important if you see them'
  variety"

* tag 'spi-fix-v4.3-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi:
  spi: xtensa-xtfpga: fix register endianness
  spi: meson: Fix module autoload for OF platform driver
  spi: mediatek: fix wrong error return value on probe
  spi: fix kernel-doc warnings in spi.h
  spi: spidev: fix possible NULL dereference
  spi: atmel: remove warning when !CONFIG_PM_SLEEP
  spi: bcm2835: BUG: fix wrong use of PAGE_MASK
  spi: mediatek: fix spi cs polarity error
  spi: Fix documentation of spi_alloc_master()
  spi: spi-pxa2xx: Check status register to determine if SSSR_TINT is disabled
  spi: Mediatek: Document devicetree bindings update for spi bus
  spi: mediatek: fix spi clock usage error
  spi: mediatek: remove clk_disable_unprepare()
2015-09-24 11:40:58 -07:00
Thierry Reding
cf6483050e drm/irq: Add drm_crtc_vblank_count_and_time()
This function is the KMS native variant of drm_vblank_count_and_time().
It takes a struct drm_crtc * instead of a struct drm_device * and an
index of the CRTC.

Eventually the goal is to access vblank data through the CRTC only so
that the per-CRTC data can be moved to struct drm_crtc.

Signed-off-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2015-09-24 20:27:17 +02:00
Lukas Wunner
21b45676b7 vga_switcheroo: Set active attribute to false for audio clients
The active attribute in struct vga_switcheroo_client denotes whether
the outputs are currently switched to this client. The attribute is
only meaningful for vga clients. It is never used for audio clients.

The function vga_switcheroo_register_audio_client() misuses this
attribute to store whether the audio device is fully initialized.
Most likely there was a misunderstanding about the meaning of
"active" when this was added.

Comment from Takashi's review:

"Not really.  The full initialization of audio was meant that the audio
is active indeed.  Admittedly, though, the active flag for each audio
client doesn't play any role because the audio always follows the gfx
state changes, and the value passed there doesn't reflect the actual
state due to the later change.  So, I agree with the removal of the
flag itself -- or let the audio active flag following the
corresponding gfx flag.  The latter will make the proc output more
consistent while the former is certainly more reduction of code."

Set the active attribute to false for audio clients. Remove the
active parameter from vga_switcheroo_register_audio_client() and
its sole caller, hda_intel.c:register_vga_switcheroo().

vga_switcheroo_register_audio_client() was introduced by 3e9e63dbd3
("vga_switcheroo: Add the support for audio clients"). Its use in
hda_intel.c was introduced by a82d51ed24 ("ALSA: hda - Support
VGA-switcheroo").

v1.1: The changes above imply that in find_active_client() the call
to client_is_vga() is now superfluous. Drop it.

Cc: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Lukas Wunner <lukas@wunner.de>
[danvet: Add Takashi's clarification to the commit message.]
Reviewed-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2015-09-24 20:14:25 +02:00
Ville Syrjälä
20b2020334 drm: Kill pixeldur_ns
pixeldur_ns is now unsued, so kill it from drm_vblank_crtc. framedur_ns
is also currently unused but we will have use for it in the near future
so leave it be. linedur_ns is still used by nouveau for some internal
delays.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2015-09-24 20:14:21 +02:00