Commit graph

1993 commits

Author SHA1 Message Date
Takashi Iwai
0b49da857d ALSA: memalloc: Workaround for Xen PV
[ Upstream commit 53466ebdec ]

We change recently the memalloc helper to use
dma_alloc_noncontiguous() and the fallback to get_pages().  Although
lots of issues with IOMMU (or non-IOMMU) have been addressed, but
there seems still a regression on Xen PV.  Interestingly, the only
proper way to work is use dma_alloc_coherent().  The use of
dma_alloc_coherent() for SG buffer was dropped as it's problematic on
IOMMU systems.  OTOH, Xen PV has a different way, and it's fine to use
the dma_alloc_coherent().

This patch is a workaround for Xen PV.  It consists of the following
changes:
- For Xen PV, use only the fallback allocation without
  dma_alloc_noncontiguous()
- In the fallback allocation, use dma_alloc_coherent();
  the DMA address from dma_alloc_coherent() is returned in get_addr
  ops
- The DMA addresses are stored in an array; the first entry stores the
  number of allocated pages in lower bits, which are referred at
  releasing pages again

Reported-by: Marek Marczykowski-Górecki <marmarek@invisiblethingslab.com>
Tested-by: Marek Marczykowski-Górecki <marmarek@invisiblethingslab.com>
Fixes: a8d302a0b7 ("ALSA: memalloc: Revive x86-specific WC page allocations again")
Fixes: 9736a32513 ("ALSA: memalloc: Don't fall back for SG-buffer with IOMMU")
Link: https://lore.kernel.org/r/87tu256lqs.wl-tiwai@suse.de
Link: https://lore.kernel.org/r/20230125153104.5527-1-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-02-09 11:28:02 +01:00
Jaroslav Kysela
e59e115d67 ALSA: control-led: use strscpy in set_led_id()
commit 70051cffb3 upstream.

The use of strncpy() in the set_led_id() was incorrect.
The len variable should use 'min(sizeof(buf2) - 1, count)'
expression.

Use strscpy() function to simplify things and handle the error gracefully.

Fixes: a135dfb5de ("ALSA: led control - add sysfs kcontrol LED marking layer")
Reported-by: yang.yang29@zte.com.cn
Link: https://lore.kernel.org/alsa-devel/202301091945513559977@zte.com.cn/
Cc: <stable@vger.kernel.org>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2023-01-18 11:58:09 +01:00
Clement Lecigne
d6ad4bd1d8 ALSA: pcm: Move rwsem lock inside snd_ctl_elem_read to prevent UAF
commit 56b88b5056 upstream.

Takes rwsem lock inside snd_ctl_elem_read instead of snd_ctl_elem_read_user
like it was done for write in commit 1fa4445f9a ("ALSA: control - introduce
snd_ctl_notify_one() helper"). Doing this way we are also fixing the following
locking issue happening in the compat path which can be easily triggered and
turned into an use-after-free.

64-bits:
snd_ctl_ioctl
  snd_ctl_elem_read_user
    [takes controls_rwsem]
    snd_ctl_elem_read [lock properly held, all good]
    [drops controls_rwsem]

32-bits:
snd_ctl_ioctl_compat
  snd_ctl_elem_write_read_compat
    ctl_elem_write_read
      snd_ctl_elem_read [missing lock, not good]

CVE-2023-0266 was assigned for this issue.

Cc: stable@kernel.org # 5.13+
Signed-off-by: Clement Lecigne <clecigne@google.com>
Reviewed-by: Jaroslav Kysela <perex@perex.cz>
Link: https://lore.kernel.org/r/20230113120745.25464-1-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2023-01-14 10:33:44 +01:00
Takashi Iwai
809b48cb2e ALSA: pcm: Set missing stop_operating flag at undoing trigger start
[ Upstream commit 5c8cc93b06 ]

When a PCM trigger-start fails at snd_pcm_do_start(), PCM core tries
to undo the action at snd_pcm_undo_start() by issuing the trigger STOP
manually.  At that point, we forgot to set the stop_operating flag,
hence the sync-stop won't be issued at the next prepare or other
calls.

This patch adds the missing stop_operating flag at
snd_pcm_undo_start().

Fixes: 1e850beea2 ("ALSA: pcm: Add the support for sync-stop operation")
Link: https://lore.kernel.org/r/b4e71631-4a94-613-27b2-fb595792630@carlh.net
Link: https://lore.kernel.org/r/20221205132124.11585-2-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2022-12-31 13:32:22 +01:00
Takashi Iwai
accc7993a7 ALSA: memalloc: Allocate more contiguous pages for fallback case
[ Upstream commit cc26516374 ]

Currently the fallback SG allocation tries to allocate each single
page, and this tends to result in the reverse order of memory
addresses when large space is available at boot, as the kernel takes a
free page from the top to the bottom in the zone.  The end result
looks as if non-contiguous (although it actually is).  What's worse is
that it leads to an overflow of BDL entries for HD-audio.

For avoiding such a problem, this patch modifies the allocation code
slightly; now it tries to allocate the larger contiguous chunks as
much as possible, then reduces to the smaller chunks only if the
allocation failed -- a similar strategy as the existing
snd_dma_alloc_pages_fallback() function.

Along with the trick, drop the unused address array from
snd_dma_sg_fallback object.  It was needed in the past when
dma_alloc_coherent() was used, but with the standard page allocator,
it became superfluous and never referred.

Fixes: a8d302a0b7 ("ALSA: memalloc: Revive x86-specific WC page allocations again")
Reviewed-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Link: https://lore.kernel.org/r/20221114141658.29620-1-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2022-12-31 13:32:11 +01:00
Kees Cook
05530ef7cf ALSA: seq: Fix function prototype mismatch in snd_seq_expand_var_event
With clang's kernel control flow integrity (kCFI, CONFIG_CFI_CLANG),
indirect call targets are validated against the expected function
pointer prototype to make sure the call target is valid to help mitigate
ROP attacks. If they are not identical, there is a failure at run time,
which manifests as either a kernel panic or thread getting killed.

seq_copy_in_user() and seq_copy_in_kernel() did not have prototypes
matching snd_seq_dump_func_t. Adjust this and remove the casts. There
are not resulting binary output differences.

This was found as a result of Clang's new -Wcast-function-type-strict
flag, which is more sensitive than the simpler -Wcast-function-type,
which only checks for type width mismatches.

Reported-by: kernel test robot <lkp@intel.com>
Link: https://lore.kernel.org/lkml/202211041527.HD8TLSE1-lkp@intel.com
Cc: Jaroslav Kysela <perex@perex.cz>
Cc: Takashi Iwai <tiwai@suse.com>
Cc: "Gustavo A. R. Silva" <gustavoars@kernel.org>
Cc: alsa-devel@alsa-project.org
Signed-off-by: Kees Cook <keescook@chromium.org>
Link: https://lore.kernel.org/r/20221118232346.never.380-kees@kernel.org
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2022-11-19 09:20:11 +01:00
Takashi Iwai
9d8e536d36 ALSA: memalloc: Try dma_alloc_noncontiguous() at first
The latest fix for the non-contiguous memalloc helper changed the
allocation method for a non-IOMMU system to use only the fallback
allocator.  This should have worked, but it caused a problem sometimes
when too many non-contiguous pages are allocated that can't be treated
by HD-audio controller.

As a quirk workaround, go back to the original strategy: use
dma_alloc_noncontiguous() at first, and apply the fallback only when
it fails, but only for non-IOMMU case.

We'll need a better fix in the fallback code as well, but this
workaround should paper over most cases.

Fixes: 9736a32513 ("ALSA: memalloc: Don't fall back for SG-buffer with IOMMU")
Reported-by: Linus Torvalds <torvalds@linux-foundation.org>
Link: https://lore.kernel.org/r/CAHk-=wgSH5ubdvt76gNwa004ooZAEJL_1Q-Fyw5M2FDdqL==dg@mail.gmail.com
Link: https://lore.kernel.org/r/20221112084718.3305-1-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2022-11-12 09:48:51 +01:00
Takashi Iwai
9736a32513 ALSA: memalloc: Don't fall back for SG-buffer with IOMMU
When the non-contiguous page allocation for SG buffer allocation
fails, the memalloc helper tries to fall back to the old page
allocation methods.  This would, however, result in the bogus page
addresses when IOMMU is enabled.  Usually in such a case, the fallback
allocation should fail as well, but occasionally it succeeds and
hitting a bad access.

The fallback was thought for non-IOMMU case, and as the error from
dma_alloc_noncontiguous() with IOMMU essentially implies a fatal
memory allocation error, we should return the error straightforwardly
without fallback.  This avoids the corner case like the above.

The patch also renames the local variable "dma_ops" with snd_ prefix
for avoiding the name conflict.

Fixes: a8d302a0b7 ("ALSA: memalloc: Revive x86-specific WC page allocations again")
Reported-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Reviewed-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Link: https://lore.kernel.org/r/alpine.DEB.2.22.394.2211041541090.3532114@eliteleevi.tm.intel.com
Link: https://lore.kernel.org/r/20221110132216.30605-1-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2022-11-10 14:23:03 +01:00
Maciej S. Szmigiero
966f015fe4 ALSA: control: add snd_ctl_rename()
Add a snd_ctl_rename() function that takes care of updating the control
hash entries for callers that already have the relevant struct snd_kcontrol
at hand and hold the control write lock (or simply haven't registered the
card yet).

Fixes: c27e1efb61 ("ALSA: control: Use xarray for faster lookups")
Cc: stable@vger.kernel.org
Signed-off-by: Maciej S. Szmigiero <maciej.szmigiero@oracle.com>
Link: https://lore.kernel.org/r/4170b71117ea81357a4f7eb8410f7cde20836c70.1666296963.git.maciej.szmigiero@oracle.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2022-10-21 08:17:08 +02:00
Takashi Iwai
97d917879d ALSA: oss: Fix potential deadlock at unregistration
We took sound_oss_mutex around the calls of unregister_sound_special()
at unregistering OSS devices.  This may, however, lead to a deadlock,
because we manage the card release via the card's device object, and
the release may happen at unregister_sound_special() call -- which
will take sound_oss_mutex again in turn.

Although the deadlock might be fixed by relaxing the rawmidi mutex in
the previous commit, it's safer to move unregister_sound_special()
calls themselves out of the sound_oss_mutex, too.  The call is
race-safe as the function has a spinlock protection by itself.

Link: https://lore.kernel.org/r/CAB7eexJP7w1B0mVgDF0dQ+gWor7UdkiwPczmL7pn91xx8xpzOA@mail.gmail.com
Cc: <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20221011070147.7611-2-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2022-10-11 09:02:43 +02:00
Takashi Iwai
a70aef7982 ALSA: rawmidi: Drop register_mutex in snd_rawmidi_free()
The register_mutex taken around the dev_unregister callback call in
snd_rawmidi_free() may potentially lead to a mutex deadlock, when OSS
emulation and a hot unplug are involved.

Since the mutex doesn't protect the actual race (as the registration
itself is already protected by another means), let's drop it.

Link: https://lore.kernel.org/r/CAB7eexJP7w1B0mVgDF0dQ+gWor7UdkiwPczmL7pn91xx8xpzOA@mail.gmail.com
Cc: <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20221011070147.7611-1-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2022-10-11 09:02:32 +02:00
Andreas Pape
d1c4420195 ALSA: dmaengine: increment buffer pointer atomically
Setting pointer and afterwards checking for wraparound leads
to the possibility of returning the inconsistent pointer position.

This patch increments buffer pointer atomically to avoid this issue.

Fixes: e7f73a1613 ("ASoC: Add dmaengine PCM helper functions")
Signed-off-by: Andreas Pape <apape@de.adit-jv.com>
Signed-off-by: Eugeniu Rosca <erosca@de.adit-jv.com>
Link: https://lore.kernel.org/r/1664211493-11789-1-git-send-email-erosca@de.adit-jv.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2022-09-27 08:55:05 +02:00
Takashi Iwai
1be2143fb7 ALSA: pcm: Make mmap status read-only
The mmap status record should be read-only.  Modifying it from
user-space may screw up things unexpectedly, so let's clear the write
bits at exposing it.

Note that alsa-lib and other known user-space apps access the mmapped
status only as read-only, hence this change shouldn't break the
existing applications.

Reviewed-by: Jaroslav Kysela <perex@perex.cz>
Link: https://lore.kernel.org/r/20220926135558.26580-3-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2022-09-27 08:46:03 +02:00
Takashi Iwai
f0061c18c1 ALSA: pcm: Avoid reference to status->state
In the PCM core and driver code, there are lots place referring to the
current PCM state via runtime->status->state.  This patch introduced a
local PCM state in runtime itself and replaces those references with
runtime->state.  It has improvements in two aspects:

- The reduction of a indirect access leads to more code optimization

- It avoids a possible (unexpected) modification of the state via mmap
  of the status record

The status->state is updated together with runtime->state, so that
user-space can still read the current state via mmap like before,
too.

This patch touches only the ALSA core code.  The changes in each
driver will follow in later patches.

Reviewed-by: Jaroslav Kysela <perex@perex.cz>
Link: https://lore.kernel.org/r/20220926135558.26580-2-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2022-09-27 08:44:05 +02:00
Kai Vehmanen
a61c7d88d3 ALSA: memalloc: use __GFP_RETRY_MAYFAIL for DMA mem allocs
Use __GFP_RETRY_MAYFAIL instead of __GFP__NORETRY in
snd_dma_dev_alloc(), snd_dma_wc_alloc() and friends, to allocate pages
for device memory. The MAYFAIL flag retains the semantics of not
triggering the OOM killer, but lowers the risk of alloc failure.

MAYFAIL flag was added in commit dcda9b0471 ("mm, tree wide: replace
__GFP_REPEAT by __GFP_RETRY_MAYFAIL with more useful semantic").

This change addresses recurring failures with SOF audio driver in test
cases where a system suspend-resume stress test is run, combined with an
active high memory-load use-case. The failure typically shows up as:

[ 379.480229] sof-audio-pci-intel-tgl 0000:00:1f.3: booting DSP firmware
[ 379.484803] sof-audio-pci-intel-tgl 0000:00:1f.3: error: memory alloc failed: -12
[ 379.484810] sof-audio-pci-intel-tgl 0000:00:1f.3: error: dma prepare for ICCMAX stream failed

Multiple fixes to reduce the memory usage of DSP boot have been
identified in SOF driver, but even with those fixes, debug on affected
systems has shown that even a single page alloc may fail with
__GFP_NORETRY. When this occurs, system is under significant load on
physical memory, but a lot of reclaimable pages are available, so the
system has not run out of memory. With __GFP_RETRY_MAYFAIL, the errors
are not hit in these stress tests.

The alloc failure is severe as audio capability is completely lost if
alloc failure is hit at system resume.

An alternative solution was considered where the resources for DSP boot
would be kept allocated until driver is unbound. This would avoid the
allocation failure, but consume memory that is only needed temporarily
at probe and resume time. It seems better to not hang on to the memory,
but rather work a bit harder for allocating the pages at resume.

BugLink: https://github.com/thesofproject/linux/issues/3844
Signed-off-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/r/20220923153501.3326041-1-kai.vehmanen@linux.intel.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2022-09-26 08:23:37 +02:00
Takashi Iwai
8e3392d340 Merge branch 'for-linus' into for-next 2022-09-20 13:43:56 +02:00
Takashi Iwai
c3afa2a402 ALSA: core: Fix double-free at snd_card_new()
During the code change to add the support for devres-managed card
instance, we put an explicit kfree(card) call at the error path in
snd_card_new().  This is needed for the early error path before the
card is initialized with the device, but is rather superfluous and
causes a double-free at the error path after the card instance is
initialized, as the destructor of the card object already contains a
kfree() call.

This patch fixes the double-free situation by removing the superfluous
kfree().  Meanwhile we need to call kfree() explicitly for the early
error path, so it's added there instead.

Fixes: e8ad415b7a ("ALSA: core: Add managed card creation")
Reported-by: Rondreis <linhaoguo86@gmail.com>
Cc: <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/CAB7eexL1zBnB636hwS27d-LdPYZ_R1-5fJS_h=ZbCWYU=UPWJg@mail.gmail.com
Link: https://lore.kernel.org/r/20220919123516.28222-1-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2022-09-19 14:36:06 +02:00
Gaosheng Cui
5a55b51a3d ALSA: memalloc: remove snd_dma_sg_ops declaration
snd_dma_sg_ops has been removed since
commit 2c95b92ecd ("ALSA: memalloc: Unify x86 SG-buffer handling
(take#3)"), so remove it.

Signed-off-by: Gaosheng Cui <cuigaosheng1@huawei.com>
Link: https://lore.kernel.org/r/20220909035443.1065737-3-cuigaosheng1@huawei.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2022-09-09 09:09:40 +02:00
Takashi Iwai
16c5cde20e Merge branch 'for-linus' into for-next
Once again back-merge the 6.0-rc devel branch for further USB-audio
and HD-audio developments.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
2022-09-06 11:04:15 +02:00
Takashi Iwai
37137ec26c ALSA: hda: Once again fix regression of page allocations with IOMMU
The last fix for trying to recover the regression on AMD platforms,
unfortunately, leaded to yet another regression: it turned out that
IOMMUs don't like the usage of raw page allocations.

This is yet another attempt for addressing the log saga; at this time,
we re-use the existing buffer allocation mechanism with SG-pages
although we require only single pages.  The SG buffer allocation
itself was confirmed to work for stream buffers, so it's relatively
easy to adapt for other places.

The only problem is: although the HD-audio code is accessing the
address directly via dmab->address field, SG-pages don't set up it.
For the ease of adaption, we now set up the dmab->addr field from the
address of the first page as default, so that it can run with the
HD-audio driver code as-is without the excessive call of
snd_sgbuf_get_addr() multiple times; that's the only change in the
memalloc helper side.  The rest is nothing but a flip of the dma_type
field in the HD-audio side.

Fixes: a8d302a0b7 ("ALSA: memalloc: Revive x86-specific WC page allocations again")
Reported-by: Mikhail Gavrilov <mikhail.v.gavrilov@gmail.com>
Tested-by: Mikhail Gavrilov <mikhail.v.gavrilov@gmail.com>
Cc: <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/CABXGCsO+kB2t5QyHY-rUe76npr1m0-5JOtt8g8SiHUo34ur7Ww@mail.gmail.com
Link: https://bugzilla.kernel.org/show_bug.cgi?id=216112
Link: https://bugzilla.kernel.org/show_bug.cgi?id=216363
Link: https://lore.kernel.org/r/20220906090319.23358-1-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2022-09-06 11:03:48 +02:00
Takashi Iwai
8423f0b6d5 ALSA: pcm: oss: Fix race at SNDCTL_DSP_SYNC
There is a small race window at snd_pcm_oss_sync() that is called from
OSS PCM SNDCTL_DSP_SYNC ioctl; namely the function calls
snd_pcm_oss_make_ready() at first, then takes the params_lock mutex
for the rest.  When the stream is set up again by another thread
between them, it leads to inconsistency, and may result in unexpected
results such as NULL dereference of OSS buffer as a fuzzer spotted
recently.

The fix is simply to cover snd_pcm_oss_make_ready() call into the same
params_lock mutex with snd_pcm_oss_make_ready_locked() variant.

Reported-and-tested-by: butt3rflyh4ck <butterflyhuangxx@gmail.com>
Reviewed-by: Jaroslav Kysela <perex@perex.cz>
Cc: <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/CAFcO6XN7JDM4xSXGhtusQfS2mSBcx50VJKwQpCq=WeLt57aaZA@mail.gmail.com
Link: https://lore.kernel.org/r/20220905060714.22549-1-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2022-09-05 15:01:22 +02:00
Takashi Iwai
041af76890 Merge branch 'for-linus' into for-next 2022-09-01 15:09:12 +02:00
Dan Carpenter
5934d9a038 ALSA: control: Re-order bounds checking in get_ctl_id_hash()
These two checks are in the reverse order so it might read one element
beyond the end of the array.  First check if the "i" is within bounds
before using it.

Fixes: 6ab55ec0a9 ("ALSA: control: Fix an out-of-bounds bug in get_ctl_id_hash()")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Link: https://lore.kernel.org/r/YwjgNh/gkG1hH7po@kili
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2022-08-26 17:17:22 +02:00
Zheyu Ma
6ab55ec0a9 ALSA: control: Fix an out-of-bounds bug in get_ctl_id_hash()
Since the user can control the arguments provided to the kernel by the
ioctl() system call, an out-of-bounds bug occurs when the 'id->name'
provided by the user does not end with '\0'.

The following log can reveal it:

[    10.002313] BUG: KASAN: stack-out-of-bounds in snd_ctl_find_id+0x36c/0x3a0
[    10.002895] Read of size 1 at addr ffff888109f5fe28 by task snd/439
[    10.004934] Call Trace:
[    10.007140]  snd_ctl_find_id+0x36c/0x3a0
[    10.007489]  snd_ctl_ioctl+0x6cf/0x10e0

Fix this by checking the bound of 'id->name' in the loop.

Fixes: c27e1efb61 ("ALSA: control: Use xarray for faster lookups")
Signed-off-by: Zheyu Ma <zheyuma97@gmail.com>
Link: https://lore.kernel.org/r/20220824081654.3767739-1-zheyuma97@gmail.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2022-08-24 11:41:53 +02:00
Takashi Iwai
dd164fbfdc ALSA: memalloc: Drop special handling of GFP for CONTINUOUS allocation
Now that all users of snd_dma_continuous_data() is gone, let's drop
this ugly (and dangerous) way.

After this commit, SNDRV_DMA_TYPE_CONTINUOUS may take the standard
device pointer instead of the hacked pointer by the macro above, and
the memalloc core refers to the coherent_dma_mask of the given
device like other SNDRV_DMA_TYPE.  It's still allowed to pass NULL
there, and in that case, the allocation is performed always in the
normal zone.

For SNDRV_DMA_TYPE_VMALLOC, the device pointer is simply ignored.

Link: https://lore.kernel.org/r/20220823115740.14123-5-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2022-08-24 08:00:26 +02:00
Takashi Iwai
3e7e04b747 ALSA: seq: Fix data-race at module auto-loading
It's been reported that there is a possible data-race accessing to the
global card_requested[] array at ALSA sequencer core, which is used
for determining whether to call request_module() for the card or not.
This data race itself is almost harmless, as it might end up with one
extra request_module() call for the already loaded module at most.
But it's still better to fix.

This patch addresses the possible data race of card_requested[] and
client_requested[] arrays by replacing them with bitmask.
It's an atomic operation and can work without locks.

Reported-by: Abhishek Shah <abhishek.shah@columbia.edu>
Cc: <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/CAEHB24_ay6YzARpA1zgCsE7=H9CSJJzux618E=Ka4h0YdKn=qA@mail.gmail.com
Link: https://lore.kernel.org/r/20220823072717.1706-2-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2022-08-24 07:59:06 +02:00
Takashi Iwai
22dec134db ALSA: seq: oss: Fix data-race for max_midi_devs access
ALSA OSS sequencer refers to a global variable max_midi_devs at
creating a new port, storing it to its own field.  Meanwhile this
variable may be changed by other sequencer events at
snd_seq_oss_midi_check_exit_port() in parallel, which may cause a data
race.

OTOH, this data race itself is almost harmless, as the access to the
MIDI device is done via get_mdev() and it's protected with a refcount,
hence its presence is guaranteed.

Though, it's sill better to address the data-race from the code sanity
POV, and this patch adds the proper spinlock for the protection.

Reported-by: Abhishek Shah <abhishek.shah@columbia.edu>
Cc: <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/CAEHB2493pZRXs863w58QWnUTtv3HHfg85aYhLn5HJHCwxqtHQg@mail.gmail.com
Link: https://lore.kernel.org/r/20220823072717.1706-1-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2022-08-23 17:00:12 +02:00
Takashi Iwai
a8d302a0b7 ALSA: memalloc: Revive x86-specific WC page allocations again
We dropped the x86-specific hack for WC-page allocations with a hope
that the standard dma_alloc_wc() works nowadays.  Alas, it doesn't,
and we need to take back some workaround again, but in a different
form, as the previous one was broken for some platforms.

This patch re-introduces the x86-specific WC-page allocations, but it
uses rather the manual page allocations instead of
dma_alloc_coherent().  The use of dma_alloc_coherent() was also a
potential problem in the recent addition of the fallback allocation
for noncontig pages, and this patch eliminates both at once.

Fixes: 9882d63bea ("ALSA: memalloc: Drop x86-specific hack for WC allocations")
Cc: <stable@vger.kernel.org>
BugLink: https://bugzilla.kernel.org/show_bug.cgi?id=216363
Link: https://lore.kernel.org/r/20220821155911.10715-1-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2022-08-22 13:01:27 +02:00
Linus Torvalds
963a70bee5 sound fixes for 6.0-rc2
The only significant core change is ASoC DPCM fix for asymmetric
 setup; other remaining changes are device-specific fixes, including
 the hardening of string manipulations.
 
 One change in platform/x86 is the patch I forgot to apply from a
 series for CS35L41 codec.
 -----BEGIN PGP SIGNATURE-----
 
 iQJCBAABCAAsFiEEIXTw5fNLNI7mMiVaLtJE4w1nLE8FAmL+NmUOHHRpd2FpQHN1
 c2UuZGUACgkQLtJE4w1nLE9EAxAAiUps1OMEIVtvuBEtXLa0cQ3MRtS2fkuv9YrE
 wvihWjG8d82rnwTdvVYij+SYb7i8JoIPJLII552uOnNisujxkffRVDt8b+ZRjIpj
 kxAbC6fSG7ty62Pa8QO1Rv7nWvmGXd3v35cc6RXRakTV1UU5lumG6OMM1j7N8vuJ
 WpzmW53jsz4V7PP3UlWfUUW39LPf35KCTzebPbrNP3l+qolV0yMrVa+Vh/U7XZdK
 R4q0KFtLoKQJS4sQ/Fj+bmISm7JurXQGfkUgoCl5Qow8Bw7uffU5c/PMbvjj62Gn
 W4Ov1PmMhH1jmoL7VmxCwi/jwtFQmAPCNwn6Ti0lrv8JyAtbyEsBQTsMc4v1hRku
 k7KIsm3vF6n7lhB7UEsR9JX1nBVdXC90OQdwXjxC6sozQFWz9Uazh3HDHJmN3xNP
 z8yU186Gdg7SrIG354211DmbSWCl0zb3+ZsoTsvui26AS0VNDpZ9sbendScE2ULL
 L2d71yvH09n6uT7OToEZ5KBhC/Rz6moG2SsIcYymm8xe+YX/AvX48Wov3JcgmXnY
 ndWzE5IUbQuiCe0Goe+gcMZm5Kpzj+tSWgMwPGMi4enzptnUHMjkIYu4bHidYfiT
 Deml5mo5G/o5J4kN9l1E4bPMYhs7FUnuQgvDK8aLlFJ0LAKwtTdp3PGGMfqatGQK
 Nhlx5pw=
 =seOs
 -----END PGP SIGNATURE-----

Merge tag 'sound-6.0-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound

Pull sound fixes from Takashi Iwai:
 "The only significant core change is ASoC DPCM fix for asymmetric
  setup; other remaining changes are device-specific fixes, including
  the hardening of string manipulations.

  One change in platform/x86 is the patch I forgot to apply from a
  series for CS35L41 codec"

* tag 'sound-6.0-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: (21 commits)
  ALSA: hda/realtek: Add quirk for Clevo NS50PU, NS70PU
  ALSA: info: Fix llseek return value when using callback
  ALSA: hda/cs8409: Support new Dolphin Variants
  platform/x86: serial-multi-instantiate: Add CLSA0101 Laptop
  ALSA: hda/realtek: Add quirk for Lenovo Yoga7 14IAL7
  ALSA: hda: cs35l41: Clarify support for CSC3551 without _DSD Properties
  ALSA: hda/realtek: Add quirks for ASUS Zenbooks using CS35L41
  ASoC: codec: tlv320aic32x4: fix mono playback via I2S
  ASoC: rt5640: Fix the JD voltage dropping issue
  ASoC: tas2770: Fix handling of mute/unmute
  ASoC: tas2770: Drop conflicting set_bias_level power setting
  ASoC: tas2770: Allow mono streams
  ASoC: tas2770: Set correct FSYNC polarity
  ASoC: Intel: fix sof_es8336 probe
  ASoC: DPCM: Don't pick up BE without substream
  ASoC: SOF: ipc3-topology: Fix clang -Wformat warning
  ASoC: sh: rz-ssi: Improve error handling in rz_ssi_probe() error path
  ASoC: SOF: Intel: hda: Fix potential buffer overflow by snprintf()
  ASoC: SOF: debug: Fix potential buffer overflow by snprintf()
  ASoC: Intel: avs: Fix potential buffer overflow by snprintf()
  ...
2022-08-19 09:46:11 -07:00
Amadeusz Sławiński
9be080edcc ALSA: info: Fix llseek return value when using callback
When using callback there was a flow of

	ret = -EINVAL
	if (callback) {
		offset = callback();
		goto out;
	}
	...
	offset = some other value in case of no callback;
	ret = offset;
out:
	return ret;

which causes the snd_info_entry_llseek() to return -EINVAL when there is
callback handler. Fix this by setting "ret" directly to callback return
value before jumping to "out".

Fixes: 73029e0ff1 ("ALSA: info - Implement common llseek for binary mode")
Signed-off-by: Amadeusz Sławiński <amadeuszx.slawinski@linux.intel.com>
Cc: <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20220817124924.3974577-1-amadeuszx.slawinski@linux.intel.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2022-08-17 15:13:30 +02:00
Linus Torvalds
668c3c237f sound updates for 6.0-rc1
As diffstat shows, we've had lots of developments in a wide range
 at this time; the majority of changes are about ASoC, including
 subsystem-wide cleanups, continued SOF / Intel updates and a
 bunch of new drivers (as usual), while there have been some
 significant (but almost invisible) improvements in ALSA core
 side, too.  Below are some highlights:
 
 Core:
 - Faster lookups of control elements with Xarray; normal user
   won't notice, but on the devices with tons of control elements,
   it can be visibly faster
 - Support for input validation for controls; this will harden
   for badly written drivers in general with a slight overhead
 - Deferred async signal handling for working around the potential
   deadlocks
 - Cleanup / refactoring raw MIDI locking code
 
 ASoC:
 - Restructing of the set_fmt() callbacks for making things clearer
   in situations like CODEC to CODEC links
 - Clean up and modernizing the DAI naming scheme setups
 - Merge of more of the Intel AVS driver stack, including some
   board integrations
 - New version 4 mechanism for communication with SOF DSPs
 - Suppoort for dynamically selecting the PLL to use at runtime on
   i.MX platforms
 - Improvements for CODEC to CODEC support in the generic cards
 - Support for AMD Jadeite and various machines, AMD RPL, Intel
   MetorLake DSPs, Mediatek MT8186 DSPs and MT6366, nVidia Tegra
   MDDRC, OPE and PEQ, NXP TFA9890, Qualcomm SDM845, WCD9335 and
   WAS883x, and Texas Instruments TAS2780
 
 HD- and USB-audio:
 - Continued improvement for CS35L41 (sub)codec support
 - More quirks for various devices (HP, Lenovo, Dell, Clevo)
 -----BEGIN PGP SIGNATURE-----
 
 iQJCBAABCAAsFiEEIXTw5fNLNI7mMiVaLtJE4w1nLE8FAmLr5bcOHHRpd2FpQHN1
 c2UuZGUACgkQLtJE4w1nLE93IQ/+OleeiGv7C487QN5MrBCkdFnSAiXsXDArcMgo
 Gt6XLubH54et1tqi2ms4gRQOqr4HiBelERuqmaCLMZfEgVDc0VhJnf2jjhluYq9+
 o9+kcYKul6qTZeNZLPjEX8pBvDe7HzOl7yep++ZnKeH6DAKNQQLDjVuOcQU/BXdY
 kL8vYrLI3zfqj/pCePb5xpkBx4XdCrE3TfiCr3tAHVg9MyvSGOJyWs02mEBqQRnc
 rlLmkjQVQyln/AGK4RAPMmrrFytktAvBjmIDyFL7kAzhdxe0ouNzTvdxESeojNJv
 CVo/p3hl/+0LYjpD2x9v2pQuifOfpjwSCy6f8jsaF366sMwR1D45h051prILsxAF
 05D5AOwMCnnJdFQFxw3mIkoDva3/PRX8GFfHsXoz+efc5Ibp8ksNYVgAJ3D2TTtt
 7nAYMn0dimVDtw2LHiKantgWAs/rOqD3hDzGxFj2sR662ahsHr8pT8csnJAGoBvW
 7kgx7ZzFo/wSyZJqVqV7p4g6J79ScehRwhqoiwZau9Eo+PhuxZUKvm4RwGFh0Vvg
 GbiVRPfLV4xQd/pDin6qRX1M7cgPc62qGLkhQHAzrX6H5ipwIbQrpyDGLjwdSEp8
 XcQmzCG1zGOvb9A8BY1VBOQXxZRTqN58XujbZ6hsms7Uw8sqagxpYLA/e1bvt1E1
 RQoHQRw=
 =1n0/
 -----END PGP SIGNATURE-----

Merge tag 'sound-6.0-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound

Pull sound updates from Takashi Iwai:
 "As the diffstat shows, we've had lots of developments in a wide range
  at this time; the majority of changes are about ASoC, including
  subsystem-wide cleanups, continued SOF / Intel updates and a bunch of
  new drivers (as usual), while there have been some significant (but
  almost invisible) improvements in ALSA core side, too.

  Below are some highlights:

  Core:

   - Faster lookups of control elements with Xarray; normal user won't
     notice, but on the devices with tons of control elements, it can be
     visibly faster

   - Support for input validation for controls; this will harden for
     badly written drivers in general with a slight overhead

   - Deferred async signal handling for working around the potential
     deadlocks

   - Cleanup / refactoring raw MIDI locking code

  ASoC:

   - Restructing of the set_fmt() callbacks for making things clearer in
     situations like CODEC to CODEC links

   - Clean up and modernizing the DAI naming scheme setups

   - Merge of more of the Intel AVS driver stack, including some board
     integrations

   - New version 4 mechanism for communication with SOF DSPs

   - Suppoort for dynamically selecting the PLL to use at runtime on
     i.MX platforms

   - Improvements for CODEC to CODEC support in the generic cards

   - Support for AMD Jadeite and various machines, AMD RPL, Intel
     MetorLake DSPs, Mediatek MT8186 DSPs and MT6366, nVidia Tegra
     MDDRC, OPE and PEQ, NXP TFA9890, Qualcomm SDM845, WCD9335 and
     WAS883x, and Texas Instruments TAS2780

  HD- and USB-audio:

   - Continued improvement for CS35L41 (sub)codec support

   - More quirks for various devices (HP, Lenovo, Dell, Clevo)"

* tag 'sound-6.0-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: (778 commits)
  ALSA: hda/realtek: Add quirk for HP Spectre x360 15-eb0xxx
  ALSA: line6: Replace sprintf() with sysfs_emit()
  ALSA: hda: Replace sprintf() with sysfs_emit()
  ALSA: pcm: Replace sprintf() with sysfs_emit()
  ALSA: core: Replace scnprintf() with sysfs_emit()
  ALSA: control-led: Replace sprintf() with sysfs_emit()
  ALSA: aoa: Replace sprintf() with sysfs_emit()
  ALSA: ac97: Replace sprintf() with sysfs_emit()
  ALSA: hda/realtek: Add quirk for Clevo NV45PZ
  ALSA: hda/realtek: Add quirk for Lenovo Yoga9 14IAP7
  ALSA: control: Use deferred fasync helper
  ALSA: pcm: Use deferred fasync helper
  ALSA: timer: Use deferred fasync helper
  ALSA: core: Add async signal helpers
  ASoC: q6asm: use kcalloc() instead of kzalloc()
  ACPI: scan: Add CLSA0101 Laptop Support
  ALSA: hda: cs35l41: Support CLSA0101
  ALSA: hda: cs35l41: Use the CS35L41 HDA internal define
  ASoC: dt-bindings: use spi-peripheral-props.yaml
  ASoC: codecs: va-macro: use fsgen as clock
  ...
2022-08-06 10:19:51 -07:00
Linus Torvalds
eff0cb3d91 pci-v5.20-changes
-----BEGIN PGP SIGNATURE-----
 
 iQJIBAABCgAyFiEEgMe7l+5h9hnxdsnuWYigwDrT+vwFAmLr+2wUHGJoZWxnYWFz
 QGdvb2dsZS5jb20ACgkQWYigwDrT+vxfZg//eChkC2EUdT6K3zuQDbJJhsGcuOQF
 lnZuUyDn4xw7BkEoZf8V6YdAnp7VvgKhLOq1/q3Geu/LBbCaczoEogOCaR/WcVOs
 C+MsN0RWZQtgfuZKncQoqp25NeLPK9PFToeiIX/xViAYZF7NVjDY7XQiZHQ6JkEA
 /7cUqv/4nS3KCMsKjfmiOxGnqohMWtICiw9qjFvJ40PEDnNB1b53rkiVTxBFePpI
 ePfsRfi/C7klE3xNfoiEgrPp+Jfw+oShsCwXUsId7bEL2oLBc7ClqP05ZYZD3bTK
 QQYyZ12Cq8TysciYpUGBjBnywUHS5DIO5YaV3wxyVAR2Z+6GY2/QVjOa2kKvoK0o
 Hba6TJf8bL58AhSI8Q62pBM0sS7dqJSff+9c2BGpZvII5spP/rQQLlJO56TJjwkw
 Dlf0d3thhZOc9vSKjKw+0v0FdAyc4L11EOwUsw95jZeT5WWgqJYGFnWPZwqBI1KM
 DI1E5wVO5tA2H3NEn+BTTHbLWL+UppqyXPXBHiW52b2q5Bt8fJWMsFvnEEjclxmG
 pYCI7VgF8jqbYKxjobxPFY2x6PH9hfaGMxwzZSdOX6e/Eh+1esgyyaC5APpCO+Pp
 e4OkJaOzCmggrD0jYeLWu+yDm5KRrYo5cdfKHrKgAof0Am41lAa1OhJ2iH4ckNqP
 1qmHereDOe0zNVw=
 =9TAR
 -----END PGP SIGNATURE-----

Merge tag 'pci-v5.20-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci

Pull pci updates from Bjorn Helgaas:
 "Enumeration:

   - Consolidate duplicated 'next function' scanning and extend to allow
     'isolated functions' on s390, similar to existing hypervisors
     (Niklas Schnelle)

  Resource management:
   - Implement pci_iobar_pfn() for sparc, which allows us to remove the
     sparc-specific pci_mmap_page_range() and pci_mmap_resource_range().

     This removes the ability to map the entire PCI I/O space using
     /proc/bus/pci, but we believe that's already been broken since
     v2.6.28 (Arnd Bergmann)

   - Move common PCI definitions to asm-generic/pci.h and rework others
     to be be more specific and more encapsulated in arches that need
     them (Stafford Horne)

  Power management:

   - Convert drivers to new *_PM_OPS macros to avoid need for '#ifdef
     CONFIG_PM_SLEEP' or '__maybe_unused' (Bjorn Helgaas)

  Virtualization:

   - Add ACS quirk for Broadcom BCM5750x multifunction NICs that isolate
     the functions but don't advertise an ACS capability (Pavan Chebbi)

  Error handling:

   - Clear PCI Status register during enumeration in case firmware left
     errors logged (Kai-Heng Feng)

   - When we have native control of AER, enable error reporting for all
     devices that support AER. Previously only a few drivers enabled
     this (Stefan Roese)

   - Keep AER error reporting enabled for switches. Previously we
     enabled this during enumeration but immediately disabled it (Stefan
     Roese)

   - Iterate over error counters instead of error strings to avoid
     printing junk in AER sysfs counters (Mohamed Khalfella)

  ASPM:

   - Remove pcie_aspm_pm_state_change() so ASPM config changes, e.g.,
     via sysfs, are not lost across power state changes (Kai-Heng Feng)

  Endpoint framework:

   - Don't stop an EPC when unbinding an EPF from it (Shunsuke Mie)

  Endpoint embedded DMA controller driver:

   - Simplify and clean up support for the DesignWare embedded DMA
     (eDMA) controller (Frank Li, Serge Semin)

  Broadcom STB PCIe controller driver:

   - Avoid config space accesses when link is down because we can't
     recover from the CPU aborts these cause (Jim Quinlan)

   - Look for power regulators described under Root Ports in DT and
     enable them before scanning the secondary bus (Jim Quinlan)

   - Disable/enable regulators in suspend/resume (Jim Quinlan)

  Freescale i.MX6 PCIe controller driver:

   - Simplify and clean up clock and PHY management (Richard Zhu)

   - Disable/enable regulators in suspend/resume (Richard Zhu)

   - Set PCIE_DBI_RO_WR_EN before writing DBI registers (Richard Zhu)

   - Allow speeds faster than Gen2 (Richard Zhu)

   - Make link being down a non-fatal error so controller probe doesn't
     fail if there are no Endpoints connected (Richard Zhu)

  Loongson PCIe controller driver:

   - Add ACPI and MCFG support for Loongson LS7A (Huacai Chen)

   - Avoid config reads to non-existent LS2K/LS7A devices because a
     hardware defect causes machine hangs (Huacai Chen)

   - Work around LS7A integrated devices that report incorrect Interrupt
     Pin values (Jianmin Lv)

  Marvell Aardvark PCIe controller driver:

   - Add support for AER and Slot capability on emulated bridge (Pali
     Rohár)

  MediaTek PCIe controller driver:

   - Add Airoha EN7532 to DT binding (John Crispin)

   - Allow building of driver for ARCH_AIROHA (Felix Fietkau)

  MediaTek PCIe Gen3 controller driver:

   - Print decoded LTSSM state when the link doesn't come up (Jianjun
     Wang)

  NVIDIA Tegra194 PCIe controller driver:

   - Convert DT binding to json-schema (Vidya Sagar)

   - Add DT bindings and driver support for Tegra234 Root Port and
     Endpoint mode (Vidya Sagar)

   - Fix some Root Port interrupt handling issues (Vidya Sagar)

   - Set default Max Payload Size to 256 bytes (Vidya Sagar)

   - Fix Data Link Feature capability programming (Vidya Sagar)

   - Extend Endpoint mode support to devices beyond Controller-5 (Vidya
     Sagar)

  Qualcomm PCIe controller driver:

   - Rework clock, reset, PHY power-on ordering to avoid hangs and
     improve consistency (Robert Marko, Christian Marangi)

   - Move pipe_clk handling to PHY drivers (Dmitry Baryshkov)

   - Add IPQ60xx support (Selvam Sathappan Periakaruppan)

   - Allow ASPM L1 and substates for 2.7.0 (Krishna chaitanya chundru)

   - Add support for more than 32 MSI interrupts (Dmitry Baryshkov)

  Renesas R-Car PCIe controller driver:

   - Convert DT binding to json-schema (Herve Codina)

   - Add Renesas RZ/N1D (R9A06G032) to rcar-gen2 DT binding and driver
     (Herve Codina)

  Samsung Exynos PCIe controller driver:

   - Fix phy-exynos-pcie driver so it follows the 'phy_init() before
     phy_power_on()' PHY programming model (Marek Szyprowski)

  Synopsys DesignWare PCIe controller driver:

   - Simplify and clean up the DWC core extensively (Serge Semin)

   - Fix an issue with programming the ATU for regions that cross a 4GB
     boundary (Serge Semin)

   - Enable the CDM check if 'snps,enable-cdm-check' exists; previously
     we skipped it if 'num-lanes' was absent (Serge Semin)

   - Allocate a 32-bit DMA-able page to be MSI target instead of using a
     driver data structure that may not be addressable with 32-bit
     address (Will McVicker)

   - Add DWC core support for more than 32 MSI interrupts (Dmitry
     Baryshkov)

  Xilinx Versal CPM PCIe controller driver:

   - Add DT binding and driver support for Versal CPM5 Gen5 Root Port
     (Bharat Kumar Gogada)"

* tag 'pci-v5.20-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: (150 commits)
  PCI: imx6: Support more than Gen2 speed link mode
  PCI: imx6: Set PCIE_DBI_RO_WR_EN before writing DBI registers
  PCI: imx6: Reformat suspend callback to keep symmetric with resume
  PCI: imx6: Move the imx6_pcie_ltssm_disable() earlier
  PCI: imx6: Disable clocks in reverse order of enable
  PCI: imx6: Do not hide PHY driver callbacks and refine the error handling
  PCI: imx6: Reduce resume time by only starting link if it was up before suspend
  PCI: imx6: Mark the link down as non-fatal error
  PCI: imx6: Move regulator enable out of imx6_pcie_deassert_core_reset()
  PCI: imx6: Turn off regulator when system is in suspend mode
  PCI: imx6: Call host init function directly in resume
  PCI: imx6: Disable i.MX6QDL clock when disabling ref clocks
  PCI: imx6: Propagate .host_init() errors to caller
  PCI: imx6: Collect clock enables in imx6_pcie_clk_enable()
  PCI: imx6: Factor out ref clock disable to match enable
  PCI: imx6: Move imx6_pcie_clk_disable() earlier
  PCI: imx6: Move imx6_pcie_enable_ref_clk() earlier
  PCI: imx6: Move PHY management functions together
  PCI: imx6: Move imx6_pcie_grp_offset(), imx6_pcie_configure_type() earlier
  PCI: imx6: Convert to NOIRQ_SYSTEM_SLEEP_PM_OPS()
  ...
2022-08-04 19:30:35 -07:00
Takashi Iwai
01043e3e14 ALSA: pcm: Replace sprintf() with sysfs_emit()
For sysfs outputs, it's safer to use a new helper, sysfs_emit(),
instead of the raw sprintf() & co.  This patch replaces such a
sprintf() call straightforwardly with the new helper.

Link: https://lore.kernel.org/r/20220801165639.26030-6-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2022-08-02 16:03:46 +02:00
Takashi Iwai
0031812bd8 ALSA: core: Replace scnprintf() with sysfs_emit()
sysfs_emit() is a new helper to simplify the sysfs string output.
Replace the open-code with this new helper.

Link: https://lore.kernel.org/r/20220801165639.26030-5-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2022-08-02 16:03:45 +02:00
Takashi Iwai
ade7956396 ALSA: control-led: Replace sprintf() with sysfs_emit()
For sysfs outputs, it's safer to use a new helper, sysfs_emit(),
instead of the raw sprintf() & co.  This patch replaces such sprintf()
calls with sysfs_emit() while simplifying the open code in
list_show().

Link: https://lore.kernel.org/r/20220801165639.26030-4-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2022-08-02 16:03:43 +02:00
Takashi Iwai
4a971e84a7 ALSA: control: Use deferred fasync helper
For avoiding the potential deadlock via kill_fasync() call, use the
new fasync helpers to defer the invocation from the control API.  Note
that it's merely a workaround.

Another note: although we haven't received reports about the deadlock
with the control API, the deadlock is still potentially possible, and
it's better to align the behavior with other core APIs (PCM and
timer); so let's move altogether.

Link: https://lore.kernel.org/r/20220728125945.29533-5-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2022-07-29 12:57:12 +02:00
Takashi Iwai
96b097091c ALSA: pcm: Use deferred fasync helper
For avoiding the potential deadlock via kill_fasync() call, use the
new fasync helpers to defer the invocation from timer API.  Note that
it's merely a workaround.

Reported-by: syzbot+8285e973a41b5aa68902@syzkaller.appspotmail.com
Reported-by: syzbot+669c9abf11a6a011dd09@syzkaller.appspotmail.com
Link: https://lore.kernel.org/r/20220728125945.29533-4-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2022-07-29 12:57:11 +02:00
Takashi Iwai
95cc637c1a ALSA: timer: Use deferred fasync helper
For avoiding the potential deadlock via kill_fasync() call, use the
new fasync helpers to defer the invocation from PCI API.  Note that
it's merely a workaround.

Reported-by: syzbot+1ee0910eca9c94f71f25@syzkaller.appspotmail.com
Reported-by: syzbot+49b10793b867871ee26f@syzkaller.appspotmail.com
Reported-by: syzbot+8285e973a41b5aa68902@syzkaller.appspotmail.com
Link: https://lore.kernel.org/r/20220728125945.29533-3-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2022-07-29 12:57:11 +02:00
Takashi Iwai
ef34a0ae7a ALSA: core: Add async signal helpers
Currently the call of kill_fasync() from an interrupt handler might
lead to potential spin deadlocks, as spotted by syzkaller.
Unfortunately, it's not so trivial to fix this lock chain as it's
involved with the tasklist_lock that is touched in allover places.

As a temporary workaround, this patch provides the way to defer the
async signal notification in a work.  The new helper functions,
snd_fasync_helper() and snd_kill_faync() are replacements for
fasync_helper() and kill_fasync(), respectively.  In addition,
snd_fasync_free() needs to be called at the destructor of the relevant
file object.

Link: https://lore.kernel.org/r/20220728125945.29533-2-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2022-07-29 12:57:10 +02:00
Stafford Horne
abb4970ac3 PCI: Move isa_dma_bridge_buggy out of asm/dma.h
The isa_dma_bridge_buggy symbol is only used for x86_32, and only x86_32
platforms or quirks ever set it.

Add a new linux/isa-dma.h header that #defines isa_dma_bridge_buggy to 0
except on x86_32, where we keep it as a variable, and remove all the arch-
specific definitions.

[bhelgaas: commit log]
Suggested-by: Arnd Bergmann <arnd@arndb.de>
Suggested-by: Christoph Hellwig <hch@infradead.org>
Link: https://lore.kernel.org/r/20220722214944.831438-3-shorne@gmail.com
Signed-off-by: Stafford Horne <shorne@gmail.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
2022-07-22 17:24:47 -05:00
Takashi Iwai
281dee6707 ALSA: core: Fix missing return value comments for kernel docs
Each kernel doc comment expects the definition of the return value in
a proper format.  This patch adds or fixes the missing entries for the
remaining ALSA core API functions.

Link: https://lore.kernel.org/r/20220713104759.4365-8-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2022-07-13 13:42:38 +02:00
Takashi Iwai
6eba99d4ce ALSA: memalloc: Fix missing return value comments for kernel docs
Each kernel doc comment expects the definition of the return value in
a proper format.  This patch adds or fixes the missing entries for
memory allocation helpers.

Link: https://lore.kernel.org/r/20220713104759.4365-7-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2022-07-13 13:42:37 +02:00
Takashi Iwai
e8406ebc37 ALSA: control: Fix missing return value comments for kernel docs
Each kernel doc comment expects the definition of the return value in
proper format.  This patch adds or fixes the missing entries for
control API.

Link: https://lore.kernel.org/r/20220713104759.4365-6-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2022-07-13 13:42:37 +02:00
Takashi Iwai
b05d834ef8 ALSA: compress: Fix kernel doc warnings
Each kernel doc comment expects the definition of the return value and
the summary for each struct / enum in a proper format.  This patch
adds or fixes the missing entries for compress-offload API.

Link: https://lore.kernel.org/r/20220713104759.4365-5-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2022-07-13 13:42:36 +02:00
Takashi Iwai
5c121d6362 ALSA: dmaengine: Fix missing return value comments for kernel docs
Each kernel doc comment expects the definition of the return value in
a proper format.  This patch adds or fixes the missing entries for PCM
dmaengine API.

Link: https://lore.kernel.org/r/20220713104759.4365-4-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2022-07-13 13:42:35 +02:00
Takashi Iwai
4e2b70673f ALSA: pcm: Fix missing return value comments for kernel docs
Each kernel doc comment expects the definition of the return value in
a proper format.  This patch adds or fixes the missing entries for PCM
API.

Link: https://lore.kernel.org/r/20220713104759.4365-3-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2022-07-13 13:42:34 +02:00
Takashi Iwai
539311aa61 ALSA: compress: Enable kernel doc markers for some functions
The exported functions snd_compress_new() and snd_compr_stop_error()
had already kernel-doc-style comments but they were not processed as
they weren't marked properly.  Let's enable them.

This patch also fixes the missing argument id for snd_compress_new
comments, too.

Reported-by: Mauro Carvalho Chehab <mchehab@kernel.org>
Link: https://lore.kernel.org/r/3cd6b93b36b32ad6ae160931aaa00b20688e241a.1656759989.git.mchehab@kernel.org
Link: https://lore.kernel.org/r/20220713104759.4365-2-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2022-07-13 13:42:33 +02:00
Takashi Iwai
4a1e6ac7d5 Merge branch 'for-linus' into for-next
Back-merge of 5.19-rc branch for the futher development, mainly about
USB-audio and HD-audio Cirrus stuff.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
2022-07-04 14:15:13 +02:00
Takashi Iwai
dd84cfff3c ASoC: Fixes for v5.19
A collection of fixes for v5.19, quite large but nothing major - a good
 chunk of it is more stuff that was identified by mixer-test regarding
 event generation.
 -----BEGIN PGP SIGNATURE-----
 
 iQEzBAABCgAdFiEEreZoqmdXGLWf4p/qJNaLcl1Uh9AFAmK12zAACgkQJNaLcl1U
 h9C1MQf/Z2R0KmA73QWqSut9IXwUGpAvPQJtx8hOUKkA7efQNcK4xywa0CbnmFLp
 kUAAXD5FhpPkZpLDAmjpTVgmgB6Wep2FX5LM5YnUgC4/sha3OpnBPD3ryGVuhJ2b
 X/70GfflZRmlLCzp4UALieqgRjXb/Lk6gqeCNOzr6A5ewYLq4/1h4rPRaWluZ4MQ
 kjL4TXYfRXbK1g39EQMelV/HEgRiZ5NhnoujtOfQGZa8iUF9r9EAmD3PKqR0kp8d
 vUD4nxt7PuQW+ksdnJuRsBII3/MwrkF8S5lgfyBW80C71YeGVaba0Ty05oTF2u2H
 GAWHfoGTw1dDnI3JwcI+7ZT6zX+HpA==
 =3OmW
 -----END PGP SIGNATURE-----

Merge tag 'asoc-fix-v5.19-rc3' of https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-linus

ASoC: Fixes for v5.19

A collection of fixes for v5.19, quite large but nothing major - a good
chunk of it is more stuff that was identified by mixer-test regarding
event generation.
2022-07-04 14:14:04 +02:00
Linus Torvalds
ddfe80311b sound fixes for 5.19-rc4
All small changes, mostly device-specific:
 - A regression fix for PCM WC-page allocation on x86
 - A regression fix for i915 audio component binding
 - Fixes for (longstanding) beep handling bug
 - Runtime PM fixes for Intel LPE HDMI audio
 - A couple of pending FireWire fixes
 - Usual HD-audio and USB-audio quirks, new Intel dspconf entries
 -----BEGIN PGP SIGNATURE-----
 
 iQJCBAABCAAsFiEEIXTw5fNLNI7mMiVaLtJE4w1nLE8FAmKzM0YOHHRpd2FpQHN1
 c2UuZGUACgkQLtJE4w1nLE/eUg//bQ2kaPY4p75mBc7cxhwiJnxU8cnLxSJ4O7/A
 Roz+9Sp741TIkY+jKXxvdLSZ8aqOF2H2Tx1DE1NQdOr55yVNIWJIZ6uu2Oue0MKJ
 A7xsQalUf7tUehXTEBDjeojoM3WA7AYvpz3PLXWXsc1QCH/sM9baVAXdZ5SryuuT
 7tCRsDwTtzHfIsS5N4rWEl9e8xzvTtQ/MluprbUia+WLrLorov4esDJokbCeolqV
 sdB24xhBttJDwuQ7FANki+FIKldDdHQKuCFk4FocdnmiUWYTWVSkeAJbHaWjm9HJ
 FZgXkD4UiwBmeiKIE0uCHaQ5QwOtJzXSI+eQU37VnAkfmQ3nyhxYrxXX4E3FxYss
 NHoMXfCmequXTq/aF+QemortgxI+c78CpN7tC/45pJCspDko1o/44D/BwjldMRRp
 f+4EiGM8xTYge53NmlTJvSAo55WdyDCWYX7JKxNbhH9KC1lUlNNnGemD5AhjeGRs
 3nC95Iva7IWrDHVaAYmhMqmlCG9CZTJR/C4xWLNdBfdvyQKx5pRrqh5wlt24A0+0
 crrylt56c3eDzOvCKwLj8cUFJyf9Qp2ZcxJowdxS1S+H0qZcWkg3i9gqDh7F7gRB
 s7gLwjZym6rYylae7lxOZp8y81JNrHJRD2R8dAWjrIadxRFXYm8rFt61v6mjFt/V
 jVkyGHQ=
 =TcQa
 -----END PGP SIGNATURE-----

Merge tag 'sound-5.19-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound

Pull sound fixes from Takashi Iwai:
 "All small changes, mostly device-specific:

   - A regression fix for PCM WC-page allocation on x86

   - A regression fix for i915 audio component binding

   - Fixes for (longstanding) beep handling bug

   - Runtime PM fixes for Intel LPE HDMI audio

   - A couple of pending FireWire fixes

   - Usual HD-audio and USB-audio quirks, new Intel dspconf entries"

* tag 'sound-5.19-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
  ALSA: hda/realtek: Add quirk for Clevo NS50PU
  ALSA: hda: Fix discovery of i915 graphics PCI device
  ALSA: hda/via: Fix missing beep setup
  ALSA: hda/conexant: Fix missing beep setup
  ALSA: memalloc: Drop x86-specific hack for WC allocations
  ALSA: hda/realtek: Add quirk for Clevo PD70PNT
  ALSA: x86: intel_hdmi_audio: use pm_runtime_resume_and_get()
  ALSA: x86: intel_hdmi_audio: enable pm_runtime and set autosuspend delay
  ALSA: hda: intel-nhlt: remove use of __func__ in dev_dbg
  ALSA: hda: intel-dspcfg: use SOF for UpExtreme and UpExtreme11 boards
  firewire: convert sysfs sprintf/snprintf family to sysfs_emit
  firewire: cdev: fix potential leak of kernel stack due to uninitialized value
  ALSA: hda/realtek: Apply fixup for Lenovo Yoga Duet 7 properly
  ALSA: hda/realtek - ALC897 headset MIC no sound
  ALSA: usb-audio: US16x08: Move overflow check before array access
  ALSA: hda/realtek: Add mute LED quirk for HP Omen laptop
2022-06-23 08:44:00 -05:00