Commit graph

536,164 commits

Author SHA1 Message Date
Pablo Neira Ayuso
c5035c77f8 netfilter: nft_meta: fix cgroup matching
We have to stop iterating on the rule expressions if the cgroup
mismatches. Moreover, make sure a non-full socket from the input path
leads us to a crash.

Fixes: ce67417 ("netfilter: nft_meta: add cgroup support")
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2015-04-01 11:33:00 +02:00
Oliver Hartkopp
a5581ef4c2 can: introduce new raw socket option to join the given CAN filters
The CAN_RAW socket can set multiple CAN identifier specific filters that lead
to multiple filters in the af_can.c filter processing. These filters are
indenpendent from each other which leads to logical OR'ed filters when applied.

This socket option joines the given CAN filters in the way that only CAN frames
are passed to user space that matched *all* given CAN filters. The semantic for
the applied filters is therefore changed to a logical AND.

This is useful especially when the filterset is a combination of filters where
the CAN_INV_FILTER flag is set in order to notch single CAN IDs or CAN ID
ranges from the incoming traffic.

As the raw_rcv() function is executed from NET_RX softirq the introduced
variables are implemented as per-CPU variables to avoid extensive locking at
CAN frame reception time.

Signed-off-by: Oliver Hartkopp <socketcan@hartkopp.net>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
2015-04-01 11:28:22 +02:00
Oliver Hartkopp
514ac99c64 can: fix multiple delivery of a single CAN frame for overlapping CAN filters
The CAN_RAW socket can set multiple CAN identifier specific filters that lead
to multiple filters in the af_can.c filter processing. These filters are
indenpendent from each other which leads to logical OR'ed filters when applied.

This patch makes sure that every CAN frame which is filtered for a specific
socket is only delivered once to the user space. This is independent from the
number of matching CAN filters of this socket.

As the raw_rcv() function is executed from NET_RX softirq the introduced
variables are implemented as per-CPU variables to avoid extensive locking at
CAN frame reception time.

Signed-off-by: Oliver Hartkopp <socketcan@hartkopp.net>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
2015-04-01 11:27:41 +02:00
Daniel Borkmann
afb7718016 netfilter: x_tables: fix cgroup matching on non-full sks
While originally only being intended for outgoing traffic, commit
a00e76349f ("netfilter: x_tables: allow to use cgroup match for
LOCAL_IN nf hooks") enabled xt_cgroups for the NF_INET_LOCAL_IN hook
as well, in order to allow for nfacct accounting.

Besides being currently limited to early demuxes only, commit
a00e76349f forgot to add a check if we deal with full sockets,
i.e. in this case not with time wait sockets. TCP time wait sockets
do not have the same memory layout as full sockets, a lower memory
footprint and consequently also don't have a sk_classid member;
probing for sk_classid member there could potentially lead to a
crash.

Fixes: a00e76349f ("netfilter: x_tables: allow to use cgroup match for LOCAL_IN nf hooks")
Cc: Alexey Perevalov <a.perevalov@samsung.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2015-04-01 11:26:42 +02:00
Will Deacon
905e8c5dca arm64: errata: add workaround for cortex-a53 erratum #845719
When running a compat (AArch32) userspace on Cortex-A53, a load at EL0
from a virtual address that matches the bottom 32 bits of the virtual
address used by a recent load at (AArch64) EL1 might return incorrect
data.

This patch works around the issue by writing to the contextidr_el1
register on the exception return path when returning to a 32-bit task.
This workaround is patched in at runtime based on the MIDR value of the
processor.

Reviewed-by: Marc Zyngier <marc.zyngier@arm.com>
Tested-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
2015-04-01 10:24:31 +01:00
Thomas Huehn
9c00bb7210 mac80211: enhance readability of Minstrel-HTs rc_stats output
This patch restructures the rc_stats debugfs table of Minstrel-HT in
order to achieve better human readability. A new layout of the
statistics and a new header is added. In addition to the old layout
there are two new columns of information added:
idx	- representing the rate index of each rate in mac80211 which
	  can be used to set specific rates as fixed rate via debugfs
airtime	- the tx-time in micro seconds that a 1200 Byte packet
	  takes to be transmitted over the air at the given rate

The old layout of rc_stats:

type           rate      tpt eprob *prob ret  *ok(*cum)        ok(      cum)
HT20/LGI       MCS0      5.6 100.0 100.0   1    0(   0)         1(        1)
HT20/LGI   B   MCS1     10.5 100.0 100.0   0    0(   0)         1(        1)
HT20/LGI  A    MCS2     14.8 100.0 100.0   0    0(   0)         1(        1)
...

is changed into this new layout:

            best   ________rate______    __statistics__    ________last_______    ______sum-of________
mode guard #  rate  [name   idx airtime]  [ ø(tp) ø(prob)]  [prob.|retry|suc|att]  [#success | #attempts]
HT20  LGI  1         MCS0     0    1480      0.0      0.0      0.0   1     0 0             0   0
HT20  LGI  1     B   MCS1     1     740     10.5    100.0    100.0   0     0 0             1   1
HT20  LGI  1    A    MCS2     2     496     14.8    100.0    100.0   0     0 0             1   1
...

Signed-off-by: Thomas Huehn <thomas@net.t-labs.tu-berlin.de>
Signed-off-by: Stefan Venz <ikstream86@gmail.com>
Acked-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2015-04-01 11:22:39 +02:00
Thomas Huehn
e161f7f6c4 mac80211: enhance readability of Minstrels rc_stats output
This patch restructures the rc_stats debugfs table of Minstrel in
order to achieve better human readability. A new layout of the
statistics and a new header is added. In addition to the old layout
there are two new columns of information added:
idx	- representing the rate index of each rate in mac80211 which
	  can be used to set specific rates as fixed rate via debugfs
airtime - the tx-time in micro seconds that a 1200 Byte packet
	  takes to be transmitted over the air at the given rate

The old layout of rc_stats:

    rate      tpt  eprob *prob ret  *ok(*cum)        ok(      cum)
 DP 1          0.9  93.5 100.0   1    0(   0)         2(        2)
    2          0.4  40.0 100.0   0    0(   0)         4(        10)
    5.5        0.0   0.0   0.0   0    0(   0)         0(        0)
...

is changed into this new layout:

best   _______rate_____    __statistics__    ________last_______    ______sum-of________
rate  [name idx tx-time]  [ ø(tp) ø(prob)]  [prob.|retry|suc|att]  [#success | #attempts]
 DP   1     0     9738      0.9    93.5     100.0   1     1 1             2   2
      2     1     4922      0.4    40.0     100.0   1     0 0             4   10
      5.5   2     1858      0.0     0.0       0.0   2     0 0             0   0
...

Signed-off-by: Thomas Huehn <thomas@net.t-labs.tu-berlin.de>
Signed-off-by: Stefan Venz <ikstream86@gmail.com>
Acked-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2015-04-01 11:22:39 +02:00
Ilan peer
c37722bd19 cfg80211: Stop calling crda if it is not responsive
Patch eeca9fce1d (cfg80211: Schedule
timeout for all CRDA call) introduced a regression, where in case
that crda is not installed (or not configured properly etc.), the
regulatory core will needlessly continue to call it, polluting the
log with the following log:

"cfg80211: Calling CRDA to update world regulatory domain"

Fix this by limiting the number of continuous CRDA request failures.

Signed-off-by: Ilan Peer <ilan.peer@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2015-04-01 11:22:38 +02:00
Markus Elfring
bf104c238d [media] mn88472: One function call less in mn88472_init() after error detection
The release_firmware() function was called in three cases by the mn88472_init()
function during error handling even if the passed variable "fw" contained still
a null pointer.

This implementation detail could be improved by the introduction of another
jump label.

Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
2015-04-01 06:22:27 -03:00
Markus Elfring
68feaa6b8b [media] mn88472: Deletion of an unnecessary check before the function call "release_firmware"
The release_firmware() function tests whether its argument is NULL and then
returns immediately. Thus the test around the call is not needed.

This issue was detected by using the Coccinelle software.

Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
2015-04-01 06:22:27 -03:00
Olli Salonen
18acc6ace5 [media] si2157: extend frequency range for ATSC
The Si2157 tuner supports ATSC in addition to DVB-T and DVB-C. Extend
minimum frequency range to cover the complete ATSC/QAM-B range.

Signed-off-by: Olli Salonen <olli.salonen@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
2015-04-01 06:22:26 -03:00
Patrick McHardy
9d0982927e netfilter: nft_hash: add support for timeouts
Add support for element timeouts to nft_hash. The lookup and walking
functions are changed to ignore timed out elements, a periodic garbage
collection task cleans out expired entries.

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2015-04-01 11:17:49 +02:00
Patrick McHardy
6908665826 netfilter: nf_tables: add GC synchronization helpers
GC is expected to happen asynchrously to the netlink interface. In the
netlink path, both insertion and removal of elements consist of two
steps, insertion followed by activation or deactivation followed by
removal, during which the element must not be freed by GC.

The synchronization helpers use an unused bit in the genmask field to
atomically mark an element as "busy", meaning it is either currently
being handled through the netlink API or by GC.

Elements being processed by GC will never survive, netlink will simply
ignore them. Elements being currently processed through netlink will be
skipped by GC and reprocessed during the next run.

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2015-04-01 11:17:29 +02:00
Patrick McHardy
cfed7e1b1f netfilter: nf_tables: add set garbage collection helpers
Add helpers for GC batch destruction: since element destruction needs
a RCU grace period for all set implementations, add some helper functions
for asynchronous batch destruction. Elements are collected in a batch
structure, which is asynchronously released using RCU once its full.

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2015-04-01 11:17:29 +02:00
Patrick McHardy
c3e1b005ed netfilter: nf_tables: add set element timeout support
Add API support for set element timeouts. Elements can have a individual
timeout value specified, overriding the sets' default.

Two new extension types are used for timeouts - the timeout value and
the expiration time. The timeout value only exists if it differs from
the default value.

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2015-04-01 11:17:28 +02:00
Patrick McHardy
761da2935d netfilter: nf_tables: add set timeout API support
Add set timeout support to the netlink API. Sets with timeout support
enabled can have a default timeout value and garbage collection interval
specified.

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2015-04-01 11:17:28 +02:00
Marc Kleine-Budde
a0bc163a7c can: ems_usb: mark timestamp as little endian
The struct ems_cpc_msg describes the a message received from the USB device,
which uses little endian byte order. This patch marks the timestamp in struct
ems_cpc_msg accordingly.

Acked-by: Gerhard Uttenthaler <uttenthaler@ems-wuensche.com>
Acked-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
2015-04-01 11:08:56 +02:00
Gerhard Uttenthaler
8a4b5b0fb7 can: ems_usb: fix endianess of CAN ID
The device expects the CAN ID in little endian format.

Signed-off-by: Gerhard Uttenthaler <uttenthaler@ems-wuensche.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
2015-04-01 11:08:55 +02:00
Uwe Kleine-König
969b861906 ASoC: rcar: mark device data as constant
A driver's device data should and can be const. This is a follow-up on
commit 33187fb4a2 (ASoC: rsnd: constify of_device_id array) which
marked the of_device_id as const.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Mark Brown <broonie@kernel.org>
2015-04-01 09:58:40 +01:00
Bandan Das
4399c03c67 x86/apic: Remove verify_local_APIC()
__verify_local_APIC() is detritus from the early APIC days.
Its return value isn't used anywhere and the information it
prints when debug is enabled is already part of APIC
initialization messages printed to syslog. Off with it!

Signed-off-by: Bandan Das <bsd@redhat.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/jpgy4mcsxsq.fsf@redhat.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2015-04-01 10:47:57 +02:00
Uwe Kleine-König
9a42ab04aa ASoC: fsi: mark several data structures as const
A driver's platform_device_id and device data should and can be const.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Mark Brown <broonie@kernel.org>
2015-04-01 09:31:19 +01:00
Uwe Kleine-König
3b6281cf28 ASoC: fsi: reorder code to make a forward declaration superfluous
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Mark Brown <broonie@kernel.org>
2015-04-01 09:31:19 +01:00
Johannes Berg
7bedd0cfad mac80211: use rhashtable for station table
We currently have a hand-rolled table with 256 entries and are
using the last byte of the MAC address as the hash. This hash
is obviously very fast, but collisions are easily created and
we waste a lot of space in the common case of just connecting
as a client to an AP where we just have a single station. The
other common case of an AP is also suboptimal due to the size
of the hash table and the ease of causing collisions.

Convert all of this to use rhashtable with jhash, which gives
us the advantage of a far better hash function (with random
perturbation to avoid hash collision attacks) and of course
that the hash table grows and shrinks dynamically with chain
length, improving both cases above.

Use a specialised hash function (using jhash, but with fixed
length) to achieve better compiler optimisation as suggested
by Sergey Ryazanov.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2015-04-01 10:06:26 +02:00
Ingo Molnar
aaa9fa3875 perf/core improvements and fixes:
User visible:
 
 - Fix 'perf script' pipe mode segfault, by always initializing ordered_events in
   perf_session__new. (Arnaldo Carvalho de Melo)
 
 - Fix ppid for synthesized fork events (David Ahern)
 
 - Fix kernel symbol resolution of callchains in S/390 by remembering the
   cpumode. (David Hildenbrand)
 
 Infrastructure:
 
 - Disable libbabeltrace check by default in the build system (Jiri Olsa)
 
 Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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Merge tag 'perf-core-for-mingo' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/core

Pull perf/core improvements and fixes from Arnaldo Carvalho de Melo:

User visible changes:

 - Fix 'perf script' pipe mode segfault, by always initializing ordered_events in
   perf_session__new(). (Arnaldo Carvalho de Melo)

 - Fix ppid for synthesized fork events. (David Ahern)

 - Fix kernel symbol resolution of callchains in S/390 by remembering the
   cpumode. (David Hildenbrand)

Infrastructure changes:

 - Disable libbabeltrace check by default in the build system. (Jiri Olsa)

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2015-04-01 09:55:17 +02:00
Wei Yuan
78c3eb3c84 ext3: Remove useless condition in if statement.
In this if statement, the previous condition is useless, the later one has covered it.

Signed-off-by: Weiyuan <weiyuan.wei@huawei.com>
Reviewed-by: Lukas Czerner <lczerner@redhat.com>
Signed-off-by: Jan Kara <jack@suse.cz>
2015-04-01 09:39:49 +02:00
John Harrison
dbe4646d6e drm/i915: Fix for ringbuf space wait in LRC mode
The legacy and LRC code paths have an almost identical procedure for waiting for
space in the ring buffer. They both search for a request in the free list that
will advance the tail to a point where sufficient space is available. They then
wait for that request, retire it and recalculate the free space value.

Unfortunately, a bug in the LRC side meant that the resulting free space might
not be as large as expected and indeed, might not be sufficient. This is because
it was testing against the value of request->tail not request->postfix. Whereas,
when a request is retired, ringbuf->tail is updated to req->postfix not
req->tail.

Another significant difference between the two is that the LRC one did not trust
the wait for request to work! It redid the is there enough space available test
and would fail the call if insufficient. Whereas, the legacy version just said
'return 0' - it assumed the preceeding code works. This difference meant that
the LRC version still worked even with the bug - it just fell back to the
polling wait path.

For: VIZ-5115
Signed-off-by: John Harrison <John.C.Harrison@Intel.com>
Reviewed-by: Thomas Daniel <thomas.daniel@intel.com>
Reviewed-by: Tomas Elf <tomas.elf@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2015-04-01 07:54:43 +02:00
John Harrison
6689cb2b62 drm/i915: Move common request allocation code into a common function
The request allocation code is largely duplicated between legacy mode and
execlist mode. The actual difference between the two versions of the code is
pretty minimal.

This patch moves the common code out into a separate function. This is then
called by the execution specific version prior to setting up the one different
value.

For: VIZ-5190
Signed-off-by: John Harrison <John.C.Harrison@Intel.com>
Reviewed-by: Tomas Elf <tomas.elf@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2015-04-01 07:54:30 +02:00
John Harrison
bc0dce3fd0 drm/i915: Make intel_logical_ring_begin() static
The only usage of intel_logical_ring_begin() is within intel_lrc.c so it can be
made static. To avoid a forward declaration at the top of the file, it and bunch
of other functions have been shuffled upwards.

For: VIZ-5115
Signed-off-by: John Harrison <John.C.Harrison@Intel.com>
Reviewed-by: Tomas Elf <tomas.elf@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2015-04-01 07:54:17 +02:00
John Harrison
f3dc74c0e1 drm/i915: Rename 'do_execbuf' to 'execbuf_submit'
The submission portion of the execbuffer code path was abstracted into a
function pointer indirection as part of the legacy vs execlist work. The two
implementation functions are called 'i915_gem_ringbuffer_submission' and
'intel_execlists_submission' but the pointer was called 'do_execbuf'. There is
already a 'i915_gem_do_execbuffer' function (which is what calls the pointer
indirection). The name of the pointer is therefore considered to be backwards
and should be changed.

This patch renames it to 'execbuf_submit' which is hopefully a bit clearer.

For: VIZ-5115
Signed-off-by: John Harrison <John.C.Harrison@Intel.com>
Reviewed-by: Tomas Elf <tomas.elf@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2015-04-01 07:53:41 +02:00
Steve French
4c5930e805 Fix warning
Coverity reports a warning due to unitialized attr structure in one
code path.

Reported by Coverity (CID 728535)

Signed-off-by: Steve French <smfrench@gmail.com>
Reviewed-by: Jeff Layton <jlayton@samba.org>
2015-04-01 00:01:47 -05:00
Steve French
dfebe40076 Fix another dereference before null check warning
null tcon is not possible in these paths so
remove confusing null check

Reported by Coverity (CID 728519)

Signed-off-by: Steve French <smfrench@gmail.com>
Reviewed-by: Jeff Layton <jlayton@samba.org>
2015-04-01 00:01:47 -05:00
Steve French
8b7a454443 CIFS: session servername can't be null
remove impossible check

Pointed out by Coverity (CID 115422)

Signed-off-by: Steve French <smfrench@gmail.com>
Reviewed-by: Jeff Layton <jlayton@samba.org>
2015-04-01 00:01:47 -05:00
Steve French
c85c35f8fc Fix warning on impossible comparison
workstation_RFC1001_name is part of the struct and can't be null,
remove impossible comparison (array vs. null)

Pointed out by Coverity (CID 140095)

Signed-off-by: Steve French <smfrench@gmail.com>
Reviewed-by: Jeff Layton <jlayton@samba.org>
2015-04-01 00:01:47 -05:00
Steve French
064bcc0702 Fix coverity warning
Coverity reports a warning for referencing the beginning of the
SMB2/SMB3 frame using the ProtocolId field as an array. Although
it works the same either way, this patch should quiet the warning
and might be a little clearer.

Reported by Coverity (CID 741269)

Signed-off-by: Steve French <smfrench@gmail.com>
Acked-by: Shirish Pargaonkar <shirishpargaonkar@gmail.com>
Acked-by: Sachin Prabhu <sprabhu@redhat.com>
Reviewed-by: Jeff Layton <jlayton@poochiereds.net>
2015-04-01 00:01:47 -05:00
Steve French
8e35310605 Fix dereference before null check warning
null tcon is not likely in these paths in current
code, but obviously it does clarify the code to
check for null (if at all) before derefrencing
rather than after.

Reported by Coverity (CID 1042666)

Signed-off-by: Steve French <smfrench@gmail.com>
Acked-by: Shirish Pargaonkar <shirishpargaonkar@gmail.com>
Acked-by: Sachin Prabhu <sprabhu@redhat.com>
2015-04-01 00:01:47 -05:00
Steve French
f3a31a2bbb Don't ignore errors on encrypting password in SMBTcon
Although unlikely to fail (and tree connect does not commonly send
a password since SECMODE_USER is the default for most servers)
do not ignore errors on SMBNTEncrypt in SMB Tree Connect.

Reported by Coverity (CID 1226853)

Signed-off-by: Steve French <smfrench@gmail.com>
Acked-by: Shirish Pargaonkar <shirishpargaonkar@gmail.com>
Acked-by: Sachin Prabhu <sprabhu@redhat.com>
Reviewed-by: Jeff Layton <jlayton@poochiereds.net>
2015-04-01 00:01:46 -05:00
Steve French
75fdfc849a Fix warning on uninitialized buftype
Pointed out by coverity analyzer.  resp_buftype is
not initialized in one path which can rarely log
a spurious warning (buf is null so there will
not be a problem with freeing data, but if buf_type
were randomly set to wrong value could log a warning)

Reported by Coverity (CID 1269144)

Signed-off-by: Steve French <smfrench@gmail.com>
Acked-by: Shirish Pargaonkar <shirishpargaonkar@gmail.com>
Acked-by: Sachin Prabhu <sprabhu@redhat.com>
Reviewed-by: Jeff Layton <jlayton@poochiereds.net>
2015-04-01 00:01:46 -05:00
Jeff Kirsher
2f30232481 MAINTAINERS: Update Intel Wired Ethernet Driver info
Update the git tree info with a recent change in tree names.  Also
add our new mailing list created solely for Linux kernel patches
and kernel development, as well as the new patchwork project for
tracking patches.  Lastly update the list of "reviewers" since a
couple of developers have moved on to different projects.

Made an update to the section header so that it is more manageable
going forward as we add new drivers.

Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2015-03-31 21:26:36 -07:00
Michael S. Tsirkin
a8557d32fe virtio_pci_modern: switch to type-safe io accessors
As Rusty noted, we were accessing queue_enable with an incorrect width.
Switch to type-safe accessors so we don't make this mistake again in the
future.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2015-04-01 14:43:34 +10:30
Michael S. Tsirkin
c5d4c2c9ce virtio_pci_modern: type-safe io accessors
The spec is very clear on this:

4.1.3.1 Driver Requirements: PCI Device Layout

The driver MUST access each field using the “natural” access method,
i.e. 32-bit accesses for 32-bit fields, 16-bit accesses for 16-bit
fields and 8-bit accesses for 8-bit fields.

Add type-safe wrappers to prevent access with incorrect width.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2015-04-01 14:37:15 +10:30
Rusty Russell
3eebd233fc lguest: handle traps on the "interrupt suppressed" iret instruction.
Lguest's "iret" is non-atomic, as it needs to restore the interrupt
state before the real iret (the guest can't actually suppress
interrupts).  For this reason, the host discards an interrupt if it
occurs in this (1-instruction) window.

We can do better, by emulating the iret execution, then immediately
setting up the interrupt handler.  In fact, we don't need to do much,
as emulating the iret and setting up th stack for the interrupt handler
basically cancel each other out.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2015-04-01 14:37:15 +10:30
Michael S. Tsirkin
012665391d virtio: drop a useless config read
"virtio: core support for config generation"
fixed reading up 64 bit values, adding generation
checks for such reads.

By mistake, it left an explicit get call in place
as well. the result is that the value is read twice,
the first result is discarded.

Not a big deal since this only happens with virtio
blk and only on boot ATM, so performance isn't
affected, but let's clean it up.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2015-04-01 14:37:14 +10:30
Michael S. Tsirkin
caa0e2d0e3 virtio_config: reorder functions
This simply reorders functions in virtio_config
so width access wrapper helpers are all together.
Drops an extra empty line while we are at it.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2015-04-01 14:37:13 +10:30
Petr Kulhavy
ab7add30ce dmaengine: edma: fixed wrongly initialized data parameter to the edma callback
The "data" parameter passed indirectly to the edma_callback() should be
edma_chan and not the dma_chan.

This bug was so far harmless since the offset of struct dma_chan within struct
edma_chan is 0. However as soon as someone changes struct edma_chan this would
cause troubles.

Signed-off-by: Petr Kulhavy <petr@barix.com>
Acked-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2015-04-01 09:15:57 +05:30
Stefan Agner
de6b641e2d dmaengine: ste_dma40: fix implicit conversion
The function d40_prep_sg takes the type enum dma_transfer_direction
as second last parameter. However, the memcpy calls pass DMA_NONE
which is of type enum dma_data_direction. Fix this by passing the
actual transfer direction DMA_MEM_TO_MEM.

This does not change the actual code flow since only the transfer
direction DMA_MEM_TO_DEV and DMA_DEV_TO_MEM are actually used in the
function d40_prep_sg.

Signed-off-by: Stefan Agner <stefan@agner.ch>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2015-04-01 09:10:22 +05:30
Shengzhou Liu
d41444daba powerpc/corenet: enable CONFIG_I2C_MUX and CONFIG_I2C_MUX_PCA954x
By default we enable CONFIG_I2C_MUX and CONFIG_I2C_MUX_PCA954x,
which are needed on T2080QDS, T4240QDS, B4860QDS, etc.

Signed-off-by: Shengzhou Liu <Shengzhou.Liu@freescale.com>
[scottwood@freescale.com: fixed subject line]
Signed-off-by: Scott Wood <scottwood@freescale.com>
2015-03-31 22:23:21 -05:00
Shengzhou Liu
7f9af0a6d5 powerpc/t2080qds: fix rtc interrupt
RTC interrupt uses IRQ11 on T2080QDS.

Signed-off-by: Shengzhou Liu <Shengzhou.Liu@freescale.com>
[scottwood@freescale.com: fix subject line]
Signed-off-by: Scott Wood <scottwood@freescale.com>
2015-03-31 22:23:20 -05:00
Bogdan Purcareata
56302c53d3 powerpc/mpic: Remove WHOAMI readback after EOI
After previous discussions regarding the subject [1][2], there's no clear
explanation or reason why the call was needed in the first place. The sensible
argument is some sort of synchronization between the CPU and the MPIC, which
hasn't been pointed out precisely and is no longer required (at least on BookE
platforms).

The benefit of this change is saving a MMIO trap per interrupt when running in a
KVM guest.

[1] https://patchwork.ozlabs.org/patch/429098/
[2] https://patchwork.ozlabs.org/patch/433557/

Signed-off-by: Bogdan Purcareata <bogdan.purcareata@freescale.com>
Signed-off-by: Scott Wood <scottwood@freescale.com>
2015-03-31 22:23:20 -05:00
Yanjiang Jin
88b7936da3 powerpc/mpc85xx: call k(un)map_atomic rather than k(un)map
The k(un)map function may be called in atomic context in the
function map_and_flush(), so use k(un)map_atomic to replace it,
else we would get the below warning during kdump:

BUG: sleeping function called from invalid context at include/linux/highmem.h:58
in_atomic(): 1, irqs_disabled(): 1, pid: 736, name: sh
INFO: lockdep is turned off.
irq event stamp: 0
hardirqs last  enabled at (0): [<          (null)>]           (null)
hardirqs last disabled at (0): [<c000000000066d1c>] .copy_process.part.44+0x50c/0x1360
softirqs last  enabled at (0): [<c000000000066d1c>] .copy_process.part.44+0x50c/0x1360
softirqs last disabled at (0): [<          (null)>]           (null)
CPU: 1 PID: 736 Comm: sh Tainted: G      D W    3.10.62-ltsi-WR6.0.0.0_standard #2
Call Trace:
[c0000000f47cf120] [c00000000000b150] .show_stack+0x170/0x290 (unreliable)
[c0000000f47cf210] [c000000000b71334] .dump_stack+0x28/0x3c
[c0000000f47cf280] [c0000000000bb5d8] .__might_sleep+0x1a8/0x270
[c0000000f47cf310] [c0000000000440cc] .map_and_flush+0x4c/0xc0
[c0000000f47cf390] [c0000000000441cc] .mpc85xx_smp_machine_kexec+0x8c/0xec0
[c0000000f47cf420] [c00000000002ae00] .machine_kexec+0x60/0x90
[c0000000f47cf4b0] [c00000000010957c] .crash_kexec+0x8c/0x100
[c0000000f47cf6a0] [c000000000015df8] .die+0x348/0x450
[c0000000f47cf740] [c00000000002f3a0] .bad_page_fault+0xe0/0x130
[c0000000f47cf7c0] [c00000000001f3e4] storage_fault_common+0x40/0x44

Signed-off-by: Yanjiang Jin <yanjiang.jin@windriver.com>
[scottwood@freescale.com: fix subject line]
Signed-off-by: Scott Wood <scottwood@freescale.com>
2015-03-31 22:23:19 -05:00
Julia Lawall
bb65f5048e powerpc: don't export static symbol
The semantic patch that fixes this problem is as follows:
(http://coccinelle.lip6.fr/)

// <smpl>
@r@
type T;
identifier f;
@@

static T f (...) { ... }

@@
identifier r.f;
declarer name EXPORT_SYMBOL;
@@

-EXPORT_SYMBOL(f);
// </smpl>

Furthermore, the function is never used, so its definition is dropped as
well.

Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: Scott Wood <scottwood@freescale.com>
2015-03-31 22:23:18 -05:00