Mark Brown [Sun, 30 Apr 2017 13:15:35 +0000 (22:15 +0900)]
Merge tag 'asoc-fix-v4.11-rc7' into asoc-linus
ASoC: Fixes for v4.11
A few last minute fixes for v4.11, the STI fix is relatively large but
driver specific and has been cooking in -next for a little while now:
- A fix from Takashi for some suspend/resume related crashes in the
Intel drivers.
- A fix from Mousumi Jana for issues with incorrectly created
enumeration controls generated from topology files which could cause
problems for userspace.
- Fixes from Arnaud Pouliquen for some crashes due to races with the
interrupt handler in the STI driver.
# gpg: Signature made Wed 26 Apr 2017 00:27:33 KST
# gpg: using RSA key ADE668AA675718B59FE29FEA24D68B725D5487D0
# gpg: issuer "broonie@kernel.org"
# gpg: key 0D9EACE2CD7BEEBC: no public key for trusted key - skipped
# gpg: key 0D9EACE2CD7BEEBC marked as ultimately trusted
# gpg: key CCB0A420AF88CD16: no public key for trusted key - skipped
# gpg: key CCB0A420AF88CD16 marked as ultimately trusted
# gpg: key 162614E316005C11: no public key for trusted key - skipped
# gpg: key 162614E316005C11 marked as ultimately trusted
# gpg: key A730C53A5621E907: no public key for trusted key - skipped
# gpg: key A730C53A5621E907 marked as ultimately trusted
# gpg: key 276568D75C6153AD: no public key for trusted key - skipped
# gpg: key 276568D75C6153AD marked as ultimately trusted
# gpg: Good signature from "Mark Brown <broonie@sirena.org.uk>" [ultimate]
# gpg: aka "Mark Brown <broonie@debian.org>" [ultimate]
# gpg: aka "Mark Brown <broonie@kernel.org>" [ultimate]
# gpg: aka "Mark Brown <broonie@tardis.ed.ac.uk>" [ultimate]
# gpg: aka "Mark Brown <broonie@linaro.org>" [ultimate]
# gpg: aka "Mark Brown <Mark.Brown@linaro.org>" [ultimate]
With compiler option W=1, we have one more warning in the driver for
'set but unused variable', so remove the unused variable to fix it.
sound/soc/intel/skylake/skl-pcm.c: In function ‘skl_platform_open’:
sound/soc/intel/skylake/skl-pcm.c:954:26: warning: variable ‘runtime’ set but not used [-Wunused-but-set-variable]
struct snd_pcm_runtime *runtime;
Signed-off-by: Vinod Koul <vinod.koul@intel.com> Reviewed-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> Signed-off-by: Mark Brown <broonie@kernel.org>
ASoC: Intel: Skylake: fix uninitialized pointer use
The error handling in bxt_sst_dsp_init() got changed in a way that
it now derefences an uninitialized pointer when printing a warning
about the device not being found:
sound/soc/intel/skylake/bxt-sst.c: In function 'bxt_sst_dsp_init':
sound/soc/intel/skylake/bxt-sst.c:567:14: error: 'skl' may be used uninitialized in this function [-Werror=maybe-uninitialized]
As we do have a valid device pointer available at the call site,
let's use that instead.
Fixes: 9fe9c7119283 ("ASoC: Intel: Skylake: Move sst common initialization to a helper function") Signed-off-by: Arnd Bergmann <arnd@arndb.de> Reviewed-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> Signed-off-by: Mark Brown <broonie@kernel.org>
Jose Abreu [Fri, 28 Apr 2017 09:55:25 +0000 (10:55 +0100)]
ASoC: dwc: Disallow building designware_pcm as a module
Designware PCM is an extension to Designware I2S and they are dependent
on each other. For this reason, make Designware PCM a boolean which will
compile with Desigwnare I2S module. The name of the module is not changed
but the name of the files need to be changed.
Also, without this commit we get errors when probbing designware_i2s module
because of unspecified license:
designware_pcm: module license 'unspecified' taints kernel.
Disabling lock debugging due to kernel taint
designware_pcm: Unknown symbol __rcu_read_lock (err 0)
designware_pcm: Unknown symbol devm_snd_soc_register_platform (err 0)
designware_pcm: Unknown symbol synchronize_rcu (err 0)
designware_pcm: Unknown symbol __rcu_read_unlock (err 0)
designware_pcm: Unknown symbol snd_soc_set_runtime_hwparams (err 0)
So, this is really needed as a fix.
Fixes: 79361b2b98b7 ("ASoC: dwc: Add PIO PCM extension") Signed-off-by: Lubomir Rintel <lkundrak@v3.sk> Signed-off-by: Jose Abreu <joabreu@synopsys.com> Signed-off-by: Mark Brown <broonie@kernel.org>
ASoC: Intel: Skylake: Add loadable module support on KBL platform
Kabylake platform expects modules in a library manifest. After loading
base firmware library manifest is loaded using load library IPC. This is
followed by module load using load multiple modules IPC.
Signed-off-by: Sodhi, VunnyX <vunnyx.sodhi@intel.com> Signed-off-by: G Kranthi <gudishax.kranthikumar@intel.com> Signed-off-by: Subhransu S. Prusty <subhransu.s.prusty@intel.com> Acked-by: Vinod Koul <vinod.koul@intel.com> Signed-off-by: Mark Brown <broonie@kernel.org>
ASoC: Intel: Skylake: Modify load_lib_ipc arguments for a nowait version
Kabylake uses code loader dma and wait on notification instead of ipc
reply for load library ipc status. So modify the argument of
skl_sst_ipc_load_library to check on flag to wait for ipc reply.
Signed-off-by: Subhransu S. Prusty <subhransu.s.prusty@intel.com> Acked-by: Vinod Koul <vinod.koul@intel.com> Signed-off-by: Mark Brown <broonie@kernel.org>
ASoC: Intel: Skylake: Register dsp_fw_ops for kabylake
For audio kabylake is same as skylake except the module load approach.
This patch registers different dsp_fw_ops for kabylake and next patch
adds the module load support for kabylake.
Signed-off-by: Subhransu S. Prusty <subhransu.s.prusty@intel.com> Acked-by: Vinod Koul <vinod.koul@intel.com> Signed-off-by: Mark Brown <broonie@kernel.org>
G Kranthi [Tue, 25 Apr 2017 06:48:21 +0000 (12:18 +0530)]
ASoC: Intel: Skylake: Modify arguments to reuse module transfer function
Kabylake also uses code loader dma for module load and library load.
skl_transfer_module can be reused. Modify the arguments to include
library index to be passed to lib load ipc and module/lib check to use
correct ipc for lib/module load.
Signed-off-by: G Kranthi <gudishax.kranthikumar@intel.com> Signed-off-by: Subhransu S. Prusty <subhransu.s.prusty@intel.com> Acked-by: Vinod Koul <vinod.koul@intel.com> Signed-off-by: Mark Brown <broonie@kernel.org>
request firmware, strip extended manifest and release library changes
are common to kabylake and APL.
So move these common code to utils to be reused in later patches for
kabylake library load.
Signed-off-by: Subhransu S. Prusty <subhransu.s.prusty@intel.com> Acked-by: Vinod Koul <vinod.koul@intel.com> Signed-off-by: Mark Brown <broonie@kernel.org>
G Kranthi [Tue, 25 Apr 2017 06:48:19 +0000 (12:18 +0530)]
ASoC: Intel: Skylake: Move sst common initialization to a helper function
Some skl sst context are not dependent of platform and initializing them
independently for each platform can lead to errors. So optimize by
moving them to a helper function and platform specific init code can
call this.
Signed-off-by: G Kranthi <gudishax.kranthikumar@intel.com> Signed-off-by: Subhransu S. Prusty <subhransu.s.prusty@intel.com> Acked-by: Vinod Koul <vinod.koul@intel.com> Signed-off-by: Mark Brown <broonie@kernel.org>
ASoC: bytcr_rt5640: Fix a typo and quirk parameter type
The previous patch for adding the quirk module option had a typo in
its info print, which results in a weird output. Also, the parameter
type should be rather unsigned int instead of signed int.
Fixes: 9f2cf73ed65b ("ASoC: bytcr_rt5640: Allow quirk set via module option") Reported-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Mark Brown <broonie@kernel.org>
ASoC: intel: Fix PM and non-atomic crash in bytcr drivers
The FE setups of Intel SST bytcr_rt5640 and bytcr_rt5651 drivers carry
the ignore_suspend flag, and this prevents the suspend/resume working
properly while the stream is running, since SST core code has the
check of the running streams and returns -EBUSY. Drop these
superfluous flags for fixing the behavior.
Also, the bytcr_rt5640 driver lacks of nonatomic flag in some FE
definitions, which leads to the kernel Oops at suspend/resume like:
ASoC: bytcr_rt5640: Allow quirk set via module option
The bytcr-rt5640 driver has a few quirk setups depending on the board,
where the quirk value is set by DMI matching. When you have a new
device to add the support, you often experience to try the different
quirk by trial-and-error. Or, you may have a development model that
still has no proper DMI string. In either case, you'd need to compile
the driver at each time.
This patch introduces a module option to override the quirk value on
the fly. User can boot like snd-soc-sst-bytcr-rt5640.quirk=0x4004 to
override the default value without recompilation. It's a raw value,
so user needs to check the source code for the meaning of each bit.
Signed-off-by: Takashi Iwai <tiwai@suse.de> Acked-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Signed-off-by: Mark Brown <broonie@kernel.org>
Since recently UCM can pick up a configuration specific to the board
via card longname field, and we introduced a helper function
snd_soc_set_dmi_name() for that. So far, it was used only in one
place (sound/soc/intel/boards/broadwell.c), but it should be more
widely applied.
This patch puts a big hammer for that: it lets snd_soc_register_card()
calling snd_soc_set_dmi_name() unconditionally, so that all x86
devices get the better longname string. This would have no impact for
other systems without DMI support, as snd_soc_set_dmi_name() is no-op
on them.
Signed-off-by: Takashi Iwai <tiwai@suse.de> Acked-by: Liam Girdwood <liam.r.girdwood@linux.intel.com> Acked-by: Vinod Koul <vinod.koul@intel.com> Signed-off-by: Mark Brown <broonie@kernel.org>
Currently the following variables are global:
- card_priv, sample_rate and sample_format
,which is not a good idea as it prevents the usage of multiple
instances.
Make sample_rate and sample_format part of the imx_priv structure
and allocate imx_priv via the standard devm_kzalloc() mechanism
inside the probe function.
Signed-off-by: Fabio Estevam <fabio.estevam@nxp.com> Signed-off-by: Mark Brown <broonie@kernel.org>
Merge tag 'upstream-4.11-rc7' of git://git.infradead.org/linux-ubifs
Pull UBI/UBIFS fixes from Richard Weinberger:
"This contains fixes for issues in both UBI and UBIFS:
- more O_TMPFILE fallout
- RENAME_WHITEOUT regression due to a mis-merge
- memory leak in ubifs_mknod()
- power-cut problem in UBI's update volume feature"
* tag 'upstream-4.11-rc7' of git://git.infradead.org/linux-ubifs:
ubifs: Fix O_TMPFILE corner case in ubifs_link()
ubifs: Fix RENAME_WHITEOUT support
ubifs: Fix debug messages for an invalid filename in ubifs_dump_inode
ubifs: Fix debug messages for an invalid filename in ubifs_dump_node
ubifs: Remove filename from debug messages in ubifs_readdir
ubifs: Fix memory leak in error path in ubifs_mknod
ubi/upd: Always flush after prepared for an update
2) Verify lengths properly in IPSEC reqeusts, from Herbert Xu.
3) Fix out of bounds access in ipv6 segment routing code, from David
Lebrun.
4) Don't write into the header of cloned SKBs in smsc95xx driver, from
James Hughes.
5) Several other drivers have this bug too, fix them. From Eric
Dumazet.
6) Fix access to uninitialized data in TC action cookie code, from
Wolfgang Bumiller.
7) Fix double free in IPV6 segment routing, again from David Lebrun.
8) Don't let userspace set the RTF_PCPU flag, oops. From David Ahern.
9) Fix use after free in qrtr code, from Dan Carpenter.
10) Don't double-destroy devices in ip6mr code, from Nikolay
Aleksandrov.
11) Don't pass out-of-range TX queue indices into drivers, from Tushar
Dave.
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (30 commits)
netpoll: Check for skb->queue_mapping
ip6mr: fix notification device destruction
bpf, doc: update bpf maintainers entry
net: qrtr: potential use after free in qrtr_sendmsg()
bpf: Fix values type used in test_maps
net: ipv6: RTF_PCPU should not be settable from userspace
gso: Validate assumption of frag_list segementation
kaweth: use skb_cow_head() to deal with cloned skbs
ch9200: use skb_cow_head() to deal with cloned skbs
lan78xx: use skb_cow_head() to deal with cloned skbs
sr9700: use skb_cow_head() to deal with cloned skbs
cx82310_eth: use skb_cow_head() to deal with cloned skbs
smsc75xx: use skb_cow_head() to deal with cloned skbs
ipv6: sr: fix double free of skb after handling invalid SRH
MAINTAINERS: Add "B:" field for networking.
net sched actions: allocate act cookie early
qed: Fix issue in populating the PFC config paramters.
qed: Fix possible system hang in the dcbnl-getdcbx() path.
qed: Fix sending an invalid PFC error mask to MFW.
qed: Fix possible error in populating max_tc field.
...
Tushar Dave [Thu, 20 Apr 2017 22:57:31 +0000 (15:57 -0700)]
netpoll: Check for skb->queue_mapping
Reducing real_num_tx_queues needs to be in sync with skb queue_mapping
otherwise skbs with queue_mapping greater than real_num_tx_queues
can be sent to the underlying driver and can result in kernel panic.
One such event is running netconsole and enabling VF on the same
device. Or running netconsole and changing number of tx queues via
ethtool on same device.
Andrey Konovalov reported a BUG caused by the ip6mr code which is caused
because we call unregister_netdevice_many for a device that is already
being destroyed. In IPv4's ipmr that has been resolved by two commits
long time ago by introducing the "notify" parameter to the delete
function and avoiding the unregister when called from a notifier, so
let's do the same for ip6mr.
Reported-by: Andrey Konovalov <andreyknvl@google.com> Signed-off-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com> Tested-by: Andrey Konovalov <andreyknvl@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Daniel Borkmann [Thu, 20 Apr 2017 15:27:58 +0000 (17:27 +0200)]
bpf, doc: update bpf maintainers entry
Add various related files that have been missing under
BPF entry covering essential parts of its infrastructure
and also add myself as co-maintainer.
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Alexei Starovoitov <ast@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
Dan Carpenter [Thu, 20 Apr 2017 10:21:30 +0000 (13:21 +0300)]
net: qrtr: potential use after free in qrtr_sendmsg()
If skb_pad() fails then it frees the skb so we should check for errors.
Fixes: bdabad3e363d ("net: Add Qualcomm IPC router") Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
David Miller [Thu, 20 Apr 2017 19:20:16 +0000 (15:20 -0400)]
bpf: Fix values type used in test_maps
Maps of per-cpu type have their value element size adjusted to 8 if it
is specified smaller during various map operations.
This makes test_maps as a 32-bit binary fail, in fact the kernel
writes past the end of the value's array on the user's stack.
To be quite honest, I think the kernel should reject creation of a
per-cpu map that doesn't have a value size of at least 8 if that's
what the kernel is going to silently adjust to later.
If the user passed something smaller, it is a sizeof() calcualtion
based upon the type they will actually use (just like in this testcase
code) in later calls to the map operations.
Fixes: df570f577231 ("samples/bpf: unit test for BPF_MAP_TYPE_PERCPU_ARRAY") Signed-off-by: David S. Miller <davem@davemloft.net> Acked-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Alexei Starovoitov <ast@kernel.org>
Andrey's syzkaller program passes rtmsg.rtmsg_flags with the RTF_PCPU bit
set. Flags passed to the kernel are blindly copied to the allocated
rt6_info by ip6_route_info_create making a newly inserted route appear
as though it is a per-cpu route. ip6_rt_cache_alloc sees the flag set
and expects rt->dst.from to be set - which it is not since it is not
really a per-cpu copy. The subsequent call to __ip6_dst_alloc then
generates the fault.
Fix by checking for the flag and failing with EINVAL.
Fixes: d52d3997f843f ("ipv6: Create percpu rt6_info") Reported-by: Andrey Konovalov <andreyknvl@google.com> Signed-off-by: David Ahern <dsa@cumulusnetworks.com> Acked-by: Martin KaFai Lau <kafai@fb.com> Tested-by: Andrey Konovalov <andreyknvl@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Ilan Tayari [Wed, 19 Apr 2017 18:26:07 +0000 (21:26 +0300)]
gso: Validate assumption of frag_list segementation
Commit 07b26c9454a2 ("gso: Support partial splitting at the frag_list
pointer") assumes that all SKBs in a frag_list (except maybe the last
one) contain the same amount of GSO payload.
This assumption is not always correct, resulting in the following
warning message in the log:
skb_segment: too many frags
For example, mlx5 driver in Striding RQ mode creates some RX SKBs with
one frag, and some with 2 frags.
After GRO, the frag_list SKBs end up having different amounts of payload.
If this frag_list SKB is then forwarded, the aforementioned assumption
is violated.
Validate the assumption, and fall back to software GSO if it not true.
Change-Id: Ia03983f4a47b6534dd987d7a2aad96d54d46d212 Fixes: 07b26c9454a2 ("gso: Support partial splitting at the frag_list pointer") Signed-off-by: Ilan Tayari <ilant@mellanox.com> Signed-off-by: Ilya Lesokhin <ilyal@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Eric Dumazet [Wed, 19 Apr 2017 16:59:26 +0000 (09:59 -0700)]
kaweth: use skb_cow_head() to deal with cloned skbs
We can use skb_cow_head() to properly deal with clones,
especially the ones coming from TCP stack that allow their head being
modified. This avoids a copy.
Signed-off-by: Eric Dumazet <edumazet@google.com> Cc: James Hughes <james.hughes@raspberrypi.org> Signed-off-by: David S. Miller <davem@davemloft.net>
Eric Dumazet [Wed, 19 Apr 2017 16:59:25 +0000 (09:59 -0700)]
ch9200: use skb_cow_head() to deal with cloned skbs
We need to ensure there is enough headroom to push extra header,
but we also need to check if we are allowed to change headers.
skb_cow_head() is the proper helper to deal with this.
Fixes: 4a476bd6d1d9 ("usbnet: New driver for QinHeng CH9200 devices") Signed-off-by: Eric Dumazet <edumazet@google.com> Cc: James Hughes <james.hughes@raspberrypi.org> Cc: Matthew Garrett <mjg59@srcf.ucam.org> Signed-off-by: David S. Miller <davem@davemloft.net>
Eric Dumazet [Wed, 19 Apr 2017 16:59:24 +0000 (09:59 -0700)]
lan78xx: use skb_cow_head() to deal with cloned skbs
We need to ensure there is enough headroom to push extra header,
but we also need to check if we are allowed to change headers.
skb_cow_head() is the proper helper to deal with this.
Fixes: 55d7de9de6c3 ("Microchip's LAN7800 family USB 2/3 to 10/100/1000 Ethernet device driver") Signed-off-by: Eric Dumazet <edumazet@google.com> Cc: James Hughes <james.hughes@raspberrypi.org> Cc: Woojung Huh <woojung.huh@microchip.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Eric Dumazet [Wed, 19 Apr 2017 16:59:23 +0000 (09:59 -0700)]
sr9700: use skb_cow_head() to deal with cloned skbs
We need to ensure there is enough headroom to push extra header,
but we also need to check if we are allowed to change headers.
skb_cow_head() is the proper helper to deal with this.
Fixes: c9b37458e956 ("USB2NET : SR9700 : One chip USB 1.1 USB2NET SR9700Device Driver Support") Signed-off-by: Eric Dumazet <edumazet@google.com> Cc: James Hughes <james.hughes@raspberrypi.org> Signed-off-by: David S. Miller <davem@davemloft.net>
Eric Dumazet [Wed, 19 Apr 2017 16:59:22 +0000 (09:59 -0700)]
cx82310_eth: use skb_cow_head() to deal with cloned skbs
We need to ensure there is enough headroom to push extra header,
but we also need to check if we are allowed to change headers.
skb_cow_head() is the proper helper to deal with this.
Fixes: cc28a20e77b2 ("introduce cx82310_eth: Conexant CX82310-based ADSL router USB ethernet driver") Signed-off-by: Eric Dumazet <edumazet@google.com> Cc: James Hughes <james.hughes@raspberrypi.org> Signed-off-by: David S. Miller <davem@davemloft.net>
Eric Dumazet [Wed, 19 Apr 2017 16:59:21 +0000 (09:59 -0700)]
smsc75xx: use skb_cow_head() to deal with cloned skbs
We need to ensure there is enough headroom to push extra header,
but we also need to check if we are allowed to change headers.
skb_cow_head() is the proper helper to deal with this.
Fixes: d0cad871703b ("smsc75xx: SMSC LAN75xx USB gigabit ethernet adapter driver") Signed-off-by: Eric Dumazet <edumazet@google.com> Cc: James Hughes <james.hughes@raspberrypi.org> Signed-off-by: David S. Miller <davem@davemloft.net>
David Lebrun [Wed, 19 Apr 2017 14:10:19 +0000 (16:10 +0200)]
ipv6: sr: fix double free of skb after handling invalid SRH
The icmpv6_param_prob() function already does a kfree_skb(),
this patch removes the duplicate one.
Fixes: 1ababeba4a21f3dba3da3523c670b207fb2feb62 ("ipv6: implement dataplane support for rthdr type 4 (Segment Routing Header)") Reported-by: Dan Carpenter <dan.carpenter@oracle.com> Cc: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: David Lebrun <david.lebrun@uclouvain.be> Signed-off-by: David S. Miller <davem@davemloft.net>
Charles Keepax [Thu, 13 Apr 2017 15:52:09 +0000 (16:52 +0100)]
ASoC: cs35l35: Allow user to configure IMON SCALE
On the chip the IMON signal is a full 24-bits however normally only
some of the bits will be sent over the bus. The chip provides a field
to select which bits of the IMON will be sent back, this is the only
feedback signal that has this feature.
Add an additional entry to the cirrus,imon device tree property to
allow the IMON scale parameter to be passed.
Signed-off-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com> Acked-by: Brian Austin <brian.austin@cirrus.com> Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Mark Brown <broonie@kernel.org>
Dan Carpenter [Fri, 14 Apr 2017 19:11:20 +0000 (22:11 +0300)]
ASoC: Intel: Skylake: Fix a couple user after free bugs
We need to use the _safe() version of list_for_each_entry() here because
of the kfree(modules).
Fixes: b8c722ddd548 ("ASoC: Intel: Skylake: Add support for deferred DSP module bind") Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Mark Brown <broonie@kernel.org>
Stefan Agner [Thu, 20 Apr 2017 06:36:07 +0000 (23:36 -0700)]
ASoC: fsl_asrc_dma: use correct direction enum type
The direction argument is of type enum dma_transfer_direction, and
not enum dma_data_direction. The enumeration values are the same
so this did not had an effect in practise.
Signed-off-by: Stefan Agner <stefan@agner.ch> Acked-by: Nicolin Chen <nicoleotsuka@gmail.com> Signed-off-by: Mark Brown <broonie@kernel.org>
Dan Carpenter [Thu, 20 Apr 2017 10:17:02 +0000 (13:17 +0300)]
ASoC: Intel: Skylake: Uninitialized variable in probe_codec()
My static checker complains that if snd_hdac_bus_get_response() returns
-EIO then "res" is uninitialized. Fix this by initializing it to -1 so
that the error is handled correctly.
Fixes: d8c2dab8381d ("ASoC: Intel: Add Skylake HDA audio driver") Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Mark Brown <broonie@kernel.org>
Marek Vasut [Fri, 21 Apr 2017 00:41:20 +0000 (00:41 +0000)]
ASoC: rsnd: Fix possible NULL pointer dereference
25165f79adc76b812bfb4d8f2ab120aafb28d0e6
("ASoC: rsnd: enable clock-frequency for both 44.1kHz/48kHz")
supports both 44.1kHz/48kHz clock-frequency settings for ADG
which will be used for AUDIO_OLKOUTn.
But some board doesn't need it, thus, it is not mandatory.
But, above patch didn't care about the case of "clock-frequency" DT
property was not present.
This patch ignores ADG settings if AUDIO_OLKOUTn was not used.
Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
[Kuninori: tidyup not to break non AUDIO_OLKOUTn case] Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> Signed-off-by: Mark Brown <broonie@kernel.org>
Merge tag 'powerpc-4.11-8' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux
Pull powerpc fixes from Michael Ellerman:
"Just two fixes.
The first fixes kprobing a stdu, and is marked for stable as it's been
broken for ~ever. In hindsight this could have gone in next.
The other is a fix for a change we merged this cycle, where if we take
a certain exception when the kernel is running relocated (currently
only used for kdump), we checkstop the box.
Thanks to Ravi Bangoria"
* tag 'powerpc-4.11-8' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
powerpc/64: Fix HMI exception on LE with CONFIG_RELOCATABLE=y
powerpc/kprobe: Fix oops when kprobed on 'stdu' instruction
Merge branch 'for-linus' of git://git.kernel.dk/linux-block
Pull block layer fixes from Jens Axboe:
"A couple of last minute fixes for regressions in this cycle. More
specifically:
- Two patches from Andy, adjusting the NVMe APST quirks to avoid some
issues specific to one Toshiba drive, and some variant of Samsung
on two specific Dell laptops.
- A fix for mtip32xx, turning off mq scheduling on that device. We
have a real fix for this, but it's too late in the cycle.
Thankfully we already have a NO_SCHED flag we can apply here. A
prep patch for this is ensuring that we honor the NO_SCHED flag
when attempting to online switch schedulers, previsouly we only did
so for drive load time. From Ming.
- Fixing an oops in blk-mq polling with scheduling attached. This one
is easily reproducible, it would be a shame to release 4.11 with
that issue. From me.
I'd prefer not having to send in patches at this point in time, but
the above are all things that have regressed in this cycle and the
fixes are relatively straight forward"
* 'for-linus' of git://git.kernel.dk/linux-block:
blk-mq: fix potential oops with polling and blk-mq scheduler
nvme: Quirk APST off on "THNSF5256GPUK TOSHIBA"
nvme: Adjust the Samsung APST quirk
mtip32xx: pass BLK_MQ_F_NO_SCHED
block: respect BLK_MQ_F_NO_SCHED
Merge tag 'acpi-4.11-final' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull ACPI build fix from Rafael Wysocki:
"This avoids a false-positive build warning from the compiler.
Specifics:
- Avoid a false-positive warning regarding a variable that may not be
initialized that started to trigger after a previous general build
fix (Arnd Bergmann)"
* tag 'acpi-4.11-final' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
ACPI / power: Avoid maybe-uninitialized warning
Merge tag 'mmc-v4.11-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc
Pull MMC fixes from Ulf Hansson:
"MMC core:
- kmalloc sdio scratch buffer to make it DMA-friendly
MMC host:
- dw_mmc: Fix behaviour for SDIO IRQs when runtime PM is used
- sdhci-esdhc-imx: Correct pad I/O drive strength for UHS-DDR50
cards"
* tag 'mmc-v4.11-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc:
mmc: sdhci-esdhc-imx: increase the pad I/O drive strength for DDR50 card
mmc: dw_mmc: Don't allow Runtime PM for SDIO cards
mmc: sdio: fix alignment issue in struct sdio_func
* emailed patches from Andrew Morton <akpm@linux-foundation.org>:
mm: prevent NR_ISOLATE_* stats from going negative
Revert "mm, page_alloc: only use per-cpu allocator for irq-safe requests"
Rabin Vincent [Thu, 20 Apr 2017 21:37:46 +0000 (14:37 -0700)]
mm: prevent NR_ISOLATE_* stats from going negative
Commit 6afcf8ef0ca0 ("mm, compaction: fix NR_ISOLATED_* stats for pfn
based migration") moved the dec_node_page_state() call (along with the
page_is_file_cache() call) to after putback_lru_page().
But page_is_file_cache() can change after putback_lru_page() is called,
so it should be called before putback_lru_page(), as it was before that
patch, to prevent NR_ISOLATE_* stats from going negative.
Without this fix, non-CONFIG_SMP kernels end up hanging in the
while(too_many_isolated()) { congestion_wait() } loop in
shrink_active_list() due to the negative stats.
While the patch worked great for userspace allocations, the fact that
softirq loses the per-cpu allocator caused problems. It needs to be
redone taking into account that a separate list is needed for hard/soft
IRQs or alternatively find a cheap way of detecting reentry due to an
interrupt. Both are possible but sufficiently tricky that it shouldn't
be rushed.
Jesper had one method for allowing softirqs but reported that the cost
was high enough that it performed similarly to a plain revert. His
figures for netperf TCP_STREAM were as follows
Baseline v4.10.0 : 60316 Mbit/s
Current 4.11.0-rc6: 47491 Mbit/s
Jesper's patch : 60662 Mbit/s
This patch : 60106 Mbit/s
As this is a regression, I wish to revert to noirq allocator for now and
go back to the drawing board.
blk-mq: fix potential oops with polling and blk-mq scheduler
If we have a scheduler attached, blk_mq_tag_to_rq() on the
scheduled tags will return NULL if a request is no longer
in flight. This is different than using the normal tags,
where it will always return the fixed request. Check for
this condition for polling, in case we happen to enter
polling for a completed request.
The request address remains valid, so this check and return
should be perfectly safe.
Fixes: bd166ef183c2 ("blk-mq-sched: add framework for MQ capable IO schedulers") Tested-by: Stephen Bates <sbates@raithlin.com> Signed-off-by: Jens Axboe <axboe@fb.com>
Andy Lutomirski [Thu, 20 Apr 2017 20:37:55 +0000 (13:37 -0700)]
nvme: Adjust the Samsung APST quirk
I got a couple more reports: the Samsung APST issues appears to
affect multiple 950-series devices in Dell XPS 15 9550 and Precision
5510 laptops. Change the quirk: rather than blacklisting the
firmware on the first problematic SSD that was reported, disable
APST on all 144d:a802 devices if they're installed in the two
affected Dell models. While we're at it, disable only the deepest
sleep state instead of all of them -- the reporters say that this is
sufficient to fix the problem.
(I have a device that appears to be entirely identical to one of the
affected devices, but I have a different Dell laptop, so it's not
the case that all Samsung devices with firmware BXW75D0Q are broken
under all circumstances.)
Samsung engineers have an affected system, and hopefully they'll
give us a better workaround some time soon. In the mean time, this
should minimize regressions.
See https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1678184
Policing filters do not use the TCA_ACT_* enum and the tb[]
nlattr array in tcf_action_init_1() doesn't get filled for
them so we should not try to look for a TCA_ACT_COOKIE
attribute in the then uninitialized array.
The error handling in cookie allocation then calls
tcf_hash_release() leading to invalid memory access later
on.
Additionally, if cookie allocation fails after an already
existing non-policing filter has successfully been changed,
tcf_action_release() should not be called, also we would
have to roll back the changes in the error handling, so
instead we now allocate the cookie early and assign it on
success at the end.
CVE-2017-7979 Fixes: 1045ba77a596 ("net sched actions: Add support for user cookies") Signed-off-by: Wolfgang Bumiller <w.bumiller@proxmox.com> Acked-by: Jamal Hadi Salim <jhs@mojatatu.com> Signed-off-by: David S. Miller <davem@davemloft.net>
qed: Fix issue in populating the PFC config paramters.
Change ieee_setpfc() callback implementation to populate traffic class
count with the user provided value.
Signed-off-by: Sudarsana Reddy Kalluru <Sudarsana.Kalluru@cavium.com> Signed-off-by: Yuval Mintz <Yuval.Mintz@cavium.com> Signed-off-by: David S. Miller <davem@davemloft.net>
qed: Fix possible system hang in the dcbnl-getdcbx() path.
qed_dcbnl_get_dcbx() API uses kmalloc in GFT_KERNEL mode. The API gets
invoked in the interrupt context by qed_dcbnl_getdcbx callback. Need
to invoke this kmalloc in atomic mode.
Signed-off-by: Sudarsana Reddy Kalluru <Sudarsana.Kalluru@cavium.com> Signed-off-by: Yuval Mintz <Yuval.Mintz@cavium.com> Signed-off-by: David S. Miller <davem@davemloft.net>
qed: Fix sending an invalid PFC error mask to MFW.
PFC error-mask value is not supported by MFW, but this bit could be
set in the pfc bit-map of the operational parameters if remote device
supports it. These operational parameters are used as basis for
populating the dcbx config parameters. User provided configs will be
applied on top of these parameters and then send them to MFW when
requested. Driver need to clear the error-mask bit before sending the
config parameters to MFW.
Signed-off-by: Sudarsana Reddy Kalluru <Sudarsana.Kalluru@cavium.com> Signed-off-by: Yuval Mintz <Yuval.Mintz@cavium.com> Signed-off-by: David S. Miller <davem@davemloft.net>
qed: Fix possible error in populating max_tc field.
Some adapters may not publish the max_tc value. Populate the default
value for max_tc field in case the mfw didn't provide one.
Signed-off-by: Sudarsana Reddy Kalluru <Sudarsana.Kalluru@cavium.com> Signed-off-by: Yuval Mintz <Yuval.Mintz@cavium.com> Signed-off-by: David S. Miller <davem@davemloft.net>
James Hughes [Wed, 19 Apr 2017 10:13:40 +0000 (11:13 +0100)]
smsc95xx: Use skb_cow_head to deal with cloned skbs
The driver was failing to check that the SKB wasn't cloned
before adding checksum data.
Replace existing handling to extend/copy the header buffer
with skb_cow_head.
Signed-off-by: James Hughes <james.hughes@raspberrypi.org> Acked-by: Eric Dumazet <edumazet@google.com> Acked-by: Woojung Huh <Woojung.Huh@microchip.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Sekhar Nori [Wed, 19 Apr 2017 08:38:24 +0000 (14:08 +0530)]
MAINTAINERS: update entry for TI's CPSW driver
Mugunthan V N, who was reviewing TI's CPSW driver patches is
not working for TI anymore and wont be reviewing patches for
that driver.
Drop Mugunthan as the maintiainer for this driver.
Grygorii continues to be a reviewer. Dave Miller applies the
patches directly and adding a maintainer is actually
misleading since get_maintainer.pl script stops suggesting
that Dave Miller be copied.
Signed-off-by: Sekhar Nori <nsekhar@ti.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Dan Carpenter [Tue, 18 Apr 2017 19:14:26 +0000 (22:14 +0300)]
dp83640: don't recieve time stamps twice
This patch is prompted by a static checker warning about a potential
use after free. The concern is that netif_rx_ni() can free "skb" and we
call it twice.
When I look at the commit that added this, it looks like some stray
lines were added accidentally. It doesn't make sense to me that we
would recieve the same data two times. I asked the author but never
recieved a response.
I can't test this code, but I'm pretty sure my patch is correct.
Fixes: 4b063258ab93 ("dp83640: Delay scheduled work.") Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Acked-by: Stefan Sørensen <stefan.sorensen@spectralink.com> Signed-off-by: David S. Miller <davem@davemloft.net>
David Lebrun [Tue, 18 Apr 2017 15:59:49 +0000 (17:59 +0200)]
ipv6: sr: fix out-of-bounds access in SRH validation
This patch fixes an out-of-bounds access in seg6_validate_srh() when the
trailing data is less than sizeof(struct sr6_tlv).
Reported-by: Andrey Konovalov <andreyknvl@google.com> Cc: Andrey Konovalov <andreyknvl@google.com> Signed-off-by: David Lebrun <david.lebrun@uclouvain.be> Signed-off-by: David S. Miller <davem@davemloft.net>
Mike Maloney [Tue, 18 Apr 2017 15:14:16 +0000 (11:14 -0400)]
selftests/net: Fixes psock_fanout CBPF test case
'psock_fanout' has been failing since commit 4d7b9dc1f36a9 ("tools:
psock_lib: harden socket filter used by psock tests"). That commit
changed the CBPF filter to examine the full ethernet frame, and was
tested on 'psock_tpacket' which uses SOCK_RAW. But 'psock_fanout' was
also using this same CBPF in two places, for filtering and fanout, on a
SOCK_DGRAM socket.
Change 'psock_fanout' to use SOCK_RAW so that the CBPF program used with
SO_ATTACH_FILTER can examine the entire frame. Create a new CBPF
program for use with PACKET_FANOUT_DATA which ignores the header, as it
cannot see the ethernet header.
Tested: Ran tools/testing/selftests/net/psock_{fanout,tpacket} 10 times,
and they all passed.
Fixes: 4d7b9dc1f36a9 ("tools: psock_lib: harden socket filter used by psock tests") Signed-off-by: 'Mike Maloney <maloneykernel@gmail.com>' Signed-off-by: David S. Miller <davem@davemloft.net>
Johannes Berg [Thu, 20 Apr 2017 19:32:16 +0000 (21:32 +0200)]
mac80211: reject ToDS broadcast data frames
AP/AP_VLAN modes don't accept any real 802.11 multicast data
frames, but since they do need to accept broadcast management
frames the same is currently permitted for data frames. This
opens a security problem because such frames would be decrypted
with the GTK, and could even contain unicast L3 frames.
Since the spec says that ToDS frames must always have the BSSID
as the RA (addr1), reject any other data frames.
The problem was originally reported in "Predicting, Decrypting,
and Abusing WPA2/802.11 Group Keys" at usenix
https://www.usenix.org/conference/usenixsecurity16/technical-sessions/presentation/vanhoef
and brought to my attention by Jouni.
Cc: stable@vger.kernel.org Reported-by: Jouni Malinen <j@w1.fi> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
--
Dave, I didn't want to send you a new pull request for a single
commit yet again - can you apply this one patch as is? Signed-off-by: David S. Miller <davem@davemloft.net>
Merge tag 'trace-v4.11-rc5-5' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace
Pull two more ftrace fixes from Steven Rostedt:
"While continuing my development, I uncovered two more small bugs.
One is a race condition when enabling the snapshot function probe
trigger. It enables the probe before allocating the snapshot, and if
the probe triggers first, it stops tracing with a warning that the
snapshot buffer was not allocated.
The seconds is that the snapshot file should show how to use it when
it is empty. But a bug fix from long ago broke the "is empty" test and
the snapshot file no longer displays the help message"
* tag 'trace-v4.11-rc5-5' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace:
ring-buffer: Have ring_buffer_iter_empty() return true when empty
tracing: Allocate the snapshot buffer before enabling probe
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux
Pull s390 fix from Martin Schwidefsky:
"There is one more fix I would like to see in 4.11: The combination of
KVM, CMMA and heavy paging can cause data corruption, the fix is to
clear the _PAGE_UNUSED bit in set_pte_at()"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux:
s390/mm: fix CMMA vs KSM vs others
Merge tag 'keys-fixes-20170419' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs
Pull keyrings fixes from David Howells:
(1) Disallow keyrings whose name begins with a '.' to be joined
[CVE-2016-9604].
(2) Change the name of the dead type to ".dead" to prevent user access
[CVE-2017-6951].
(3) Fix keyctl_set_reqkey_keyring() to not leak thread keyrings
[CVE-2017-7472]
* tag 'keys-fixes-20170419' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs:
KEYS: fix keyctl_set_reqkey_keyring() to not leak thread keyrings
KEYS: Change the name of the dead type to ".dead" to prevent user access
KEYS: Disallow keyrings beginning with '.' to be joined as session keyrings
David S. Miller [Thu, 20 Apr 2017 17:36:42 +0000 (13:36 -0400)]
Merge tag 'mac80211-for-davem-2017-04-18' of git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211
Johannes Berg says:
====================
A single fix, for the MU-MIMO monitor mode, that fixes
bad SKB accesses if the SKB was paged, which is the case
for the only driver supporting this - iwlwifi.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Keith Busch [Wed, 19 Apr 2017 23:51:10 +0000 (19:51 -0400)]
genirq/affinity: Fix calculating vectors to assign
The vectors_per_node is calculated from the remaining available vectors.
The current vector starts after pre_vectors, so we need to subtract that
from the current to properly account for the number of remaining vectors
to assign.
mmc: sdhci-esdhc-imx: increase the pad I/O drive strength for DDR50 card
Currently for DDR50 card, it need tuning in default. We meet tuning fail
issue for DDR50 card and some data CRC error when DDR50 sd card works.
This is because the default pad I/O drive strength can't make sure DDR50
card work stable. So increase the pad I/O drive strength for DDR50 card,
and use pins_100mhz.
This fixes DDR50 card support for IMX since DDR50 tuning was enabled from
commit 9faac7b95ea4 ("mmc: sdhci: enable tuning for DDR50")
Jason Gerecke [Wed, 19 Apr 2017 21:47:24 +0000 (14:47 -0700)]
HID: wacom: Override incorrect logical maximum contact identifier
It apears that devices designed around Wacom's G11 chipset (e.g. Lenovo
ThinkPad Yoga 260, Lenovo ThinkPad X1 Yoga, Dell XPS 12 9250, Dell Venue
8 Pro 5855, etc.) suffer from a common issue in their HID descriptors.
The logical maximum is not updated for the "Contact Identifier" usage,
leaving it as just "1" despite these devices being capable of tracking
far more touches.
Commit 60a221869803 began ignoring usages with out-of-range values,
causing problems for devices based on this chipset. Touches after
the first will have an out-of-range Contact Identifier, and ignoring
that usage will cause the kernel to incorrectly slot each finger's
events (along with all the knock-on userspace effects that entails).
This commit checks for these buggy descriptors and updates the maximum
where required. Prior chipsets have used "255" as the maximum (and the
G11, at least, doesn't seem to actually use IDs outside the range of
1..CONTACTMAX) so continue using this value.
Cc: stable@vger.kernel.org Fixes: 60a221869803 ("HID: wacom: generic: add support for touchring") Signed-off-by: Jason Gerecke <jason.gerecke@wacom.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
ring-buffer: Have ring_buffer_iter_empty() return true when empty
I noticed that reading the snapshot file when it is empty no longer gives a
status. It suppose to show the status of the snapshot buffer as well as how
to allocate and use it. For example:
># cat snapshot
# tracer: nop
#
#
# * Snapshot is allocated *
#
# Snapshot commands:
# echo 0 > snapshot : Clears and frees snapshot buffer
# echo 1 > snapshot : Allocates snapshot buffer, if not already allocated.
# Takes a snapshot of the main buffer.
# echo 2 > snapshot : Clears snapshot buffer (but does not allocate or free)
# (Doesn't have to be '2' works with any number that
# is not a '0' or '1')
What happened was that it was using the ring_buffer_iter_empty() function to
see if it was empty, and if it was, it showed the status. But that function
was returning false when it was empty. The reason was that the iter header
page was on the reader page, and the reader page was empty, but so was the
buffer itself. The check only tested to see if the iter was on the commit
page, but the commit page was no longer pointing to the reader page, but as
all pages were empty, the buffer is also.
Cc: stable@vger.kernel.org Fixes: 651e22f2701b ("ring-buffer: Always reset iterator to reader page") Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Merge tag 'clk-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux
Pull clk fixes from Stephen Boyd"
- one stm32f4 fix for a change that introduced the PLL_I2S and PLL_SAI
boards
- two Allwinner clk driver build fixes
- two Allwinner CPU clk driver fixes where we see random CPUFreq
crashes because the CPU's PLL locks up sometimes when we change the
rate
* tag 'clk-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux:
clk: sunxi-ng: a33: gate then ungate PLL CPU clk after rate change
clk: sunxi-ng: Add clk notifier to gate then ungate PLL clocks
clk: sunxi-ng: fix build failure in ccu-sun9i-a80 driver
clk: sunxi-ng: fix build error without CONFIG_RESET_CONTROLLER
clk: stm32f4: fix: exclude values 0 and 1 for PLLQ
We are under rcu read lock protection at that point:
rcu_read_lock();
d = atomic_long_read(&ns->stashed);
if (!d)
goto slow;
dentry = (struct dentry *)d;
if (!lockref_get_not_dead(&dentry->d_lockref))
goto slow;
rcu_read_unlock();
but don't use a proper RCU API on the free path, therefore a parallel
__d_free() could free it at the same time. We need to mark the stashed
dentry with DCACHE_RCUACCESS so that __d_free() will be called after all
readers leave RCU.
Fixes: e149ed2b805f ("take the targets of /proc/*/ns/* symlinks to separate fs") Cc: Alexander Viro <viro@zeniv.linux.org.uk> Cc: Andrew Morton <akpm@linux-foundation.org> Reported-by: Andrey Konovalov <andreyknvl@google.com> Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Michal Hocko [Wed, 19 Apr 2017 07:52:46 +0000 (09:52 +0200)]
mm: make mm_percpu_wq non freezable
Geert has reported a freeze during PM resume and some additional
debugging has shown that the device_resume worker cannot make a forward
progress because it waits for an event which is stuck waiting in
drain_all_pages:
Tetsuo has properly noted that mm_percpu_wq is created as WQ_FREEZABLE
so it is frozen this early during resume so we are effectively
deadlocked. Fix this by dropping WQ_FREEZABLE when creating
mm_percpu_wq. We really want to have it operational all the time.
Fixes: ce612879ddc7 ("mm: move pcp and lru-pcp draining into single wq") Reported-and-tested-by: Geert Uytterhoeven <geert@linux-m68k.org> Debugged-by: Tetsuo Handa <penguin-kernel@i-love.sakura.ne.jp> Signed-off-by: Michal Hocko <mhocko@suse.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Merge tag 'backlight-for-v4.11' of git://git.linaro.org/people/daniel.thompson/linux
Pull backlight fix from Daniel Thompson:
"Normally pull requests for backlight come from Lee Jones (and will
continue to do so) but the bug fixed here is annoying for few people
so I'm providing a little holiday cover.
Fix a single bug in the PWM backlight driver and make it play nice
with a wider range of GPIO devices. This bug is a regression and was
independently discovered by Geert Uytterhoevan and Paul Kocialkowski
(and is tested by both)"
* tag 'backlight-for-v4.11' of git://git.linaro.org/people/daniel.thompson/linux:
backlight: pwm_bl: Fix GPIO out for unimplemented .get_direction()
gcc -O2 cannot always prove that the loop in acpi_power_get_inferred_state()
is enterered at least once, so it assumes that cur_state might not get
initialized:
drivers/acpi/power.c: In function 'acpi_power_get_inferred_state':
drivers/acpi/power.c:222:9: error: 'cur_state' may be used uninitialized in this function [-Werror=maybe-uninitialized]
This sets the variable to zero at the start of the loop, to ensure that
there is well-defined behavior even for an empty list. This gets rid of
the warning.
The warning first showed up when the -Os flag got removed in a bug fix
patch in linux-4.11-rc5.
I would suggest merging this addon patch on top of that bug fix to avoid
introducing a new warning in the stable kernels.
Fixes: 61b79e16c68d (ACPI: Fix incompatibility with mcount-based function graph tracing) Cc: All applicable <stable@vger.kernel.org> Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Ming Lei [Sat, 15 Apr 2017 12:38:23 +0000 (20:38 +0800)]
mtip32xx: pass BLK_MQ_F_NO_SCHED
The recent introduced MQ IO scheduler breaks mtip32xx in the
following way.
mtip32xx use the 'request_index' passed to .init_request() as
hardware tag index for initializing hardware queue, and it
actually require that rq->tag is always same with 'request_index'
passed to .init_request(). Current blk-mq IO scheduler can't
guarantee this point, so this patch passes BLK_MQ_F_NO_SCHED
and at least make mtip32xx working.
This patch fixes the following strange hardware failure. The
issue can be triggered easily when doing I/O with mq-deadline
enabled.
projects / mirror_ubuntu-bionic-kernel.git / log