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  1. 16 8月, 2019 3 次提交
  3. 06 3月, 2019 1 次提交
    • D
      ALSA: compress: prevent potential divide by zero bugs · e7b2f9f2
      由 Dan Carpenter 提交于 
      [ Upstream commit 678e2b44c8e3fec3afc7202f1996a4500a50be93 ]

The problem is seen in the q6asm_dai_compr_set_params() function:

	ret = q6asm_map_memory_regions(dir, prtd->audio_client, prtd->phys,
				       (prtd->pcm_size / prtd->periods),
                                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
				       prtd->periods);

In this code prtd->pcm_size is the buffer_size and prtd->periods comes
from params->buffer.fragments.  If we allow the number of fragments to
be zero then it results in a divide by zero bug.  One possible fix would
be to use prtd->pcm_count directly instead of using the division to
re-calculate it.  But I decided that it doesn't really make sense to
allow zero fragments.
Signed-off-by: NDan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: NMark Brown <broonie@kernel.org>
Signed-off-by: NSasha Levin <sashal@kernel.org>
      e7b2f9f2
  5. 03 8月, 2018 1 次提交
    • T
      ALSA: compress: Remove empty init and exit · a6403299
      由 Takashi Iwai 提交于 
      For a sake of code simplification, remove the init and the exit
entries that do nothing.

Notes for readers: actually it's OK to remove *both* init and exit,
but not OK to remove the exit entry.  By removing only the exit while
keeping init, the module becomes permanently loaded; i.e. you cannot
unload it any longer!
Signed-off-by: NTakashi Iwai <tiwai@suse.de>
      a6403299
  7. 28 5月, 2018 1 次提交
  9. 12 2月, 2018 1 次提交
    • L
      vfs: do bulk POLL* -> EPOLL* replacement · a9a08845
      由 Linus Torvalds 提交于 
      This is the mindless scripted replacement of kernel use of POLL*
variables as described by Al, done by this script:

    for V in IN OUT PRI ERR RDNORM RDBAND WRNORM WRBAND HUP RDHUP NVAL MSG; do
        L=`git grep -l -w POLL$V | grep -v '^t' | grep -v /um/ | grep -v '^sa' | grep -v '/poll.h$'|grep -v '^D'`
        for f in $L; do sed -i "-es/^\([^\"]*\)\(\<POLL$V\>\)/\\1E\\2/" $f; done
    done

with de-mangling cleanups yet to come.

NOTE! On almost all architectures, the EPOLL* constants have the same
values as the POLL* constants do.  But they keyword here is "almost".
For various bad reasons they aren't the same, and epoll() doesn't
actually work quite correctly in some cases due to this on Sparc et al.

The next patch from Al will sort out the final differences, and we
should be all done.
Scripted-by: NAl Viro <viro@zeniv.linux.org.uk>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
      a9a08845
  11. 28 11月, 2017 1 次提交
  13. 18 9月, 2017 1 次提交
  15. 17 9月, 2016 1 次提交
  17. 22 8月, 2016 1 次提交
  19. 13 6月, 2016 1 次提交
    • C
      ALSA: compress: Add function to indicate the stream has gone bad · a4f2d87c
      由 Charles Keepax 提交于 
      Currently, the avail IOCTL doesn't pass any error status, which
means typically on error it simply shows no data available. This
can lead to situations where user-space is waiting indefinitely
for data that will never come as the DSP has suffered an
unrecoverable error.

Add snd_compr_stop_error which end drivers can call to indicate
the stream has suffered an unrecoverable error and stop it. The
avail and poll IOCTLs are then updated to report if the stream is
in an error state to user-space. Allowing the error to propagate
out. Processing of the actual snd_compr_stop needs to be deferred
to a worker thread as the end driver may detect the errors during
an existing operation callback.
Signed-off-by: NCharles Keepax <ckeepax@opensource.wolfsonmicro.com>
Acked-by: NVinod Koul <vinod.koul@intel.com>
Signed-off-by: NMark Brown <broonie@kernel.org>
      a4f2d87c
  21. 09 5月, 2016 4 次提交
  23. 05 3月, 2016 3 次提交
  25. 04 3月, 2016 1 次提交
  27. 26 1月, 2016 1 次提交
    • T
      ALSA: compress: Disable GET_CODEC_CAPS ioctl for some architectures · 462b3f16
      由 Takashi Iwai 提交于 
      Some architectures like PowerPC can handle the maximum struct size in
an ioctl only up to 13 bits, and struct snd_compr_codec_caps used by
SNDRV_COMPRESS_GET_CODEC_CAPS ioctl overflows this limit.  This
problem was revealed recently by a powerpc change, as it's now treated
as a fatal build error.

This patch is a stop-gap for that: for architectures with less than 14
bit ioctl struct size, get rid of the handling of the relevant ioctl.
We should provide an alternative equivalent ioctl code later, but for
now just paper over it.  Luckily, the compress API hasn't been used on
such architectures, so the impact must be effectively zero.
Reviewed-by: NMark Brown <broonie@kernel.org>
Acked-by: NSudip Mukherjee <sudipm.mukherjee@gmail.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: NTakashi Iwai <tiwai@suse.de>
      462b3f16
  29. 07 12月, 2015 1 次提交
  31. 30 11月, 2015 2 次提交
  33. 03 2月, 2015 1 次提交
    • T
      ALSA: Simplify snd_device_register() variants · 40a4b263
      由 Takashi Iwai 提交于 
      Now that all callers have been replaced with
snd_device_register_for_dev(), let's drop the obsolete device
registration code and concentrate only on the code handling struct
device directly.  That said,

- remove the old snd_device_register(),
- rename snd_device_register_for_dev() with snd_device_register(),
- drop superfluous arguments from snd_device_register(),
- change snd_unregister_device() to pass the device pointer directly
Reviewed-by: NJaroslav Kysela <perex@perex.cz>
Signed-off-by: NTakashi Iwai <tiwai@suse.de>
      40a4b263
  35. 02 2月, 2015 1 次提交
  37. 16 7月, 2014 1 次提交
  39. 19 3月, 2014 1 次提交
  41. 05 1月, 2014 1 次提交
  43. 12 11月, 2013 1 次提交
  45. 07 11月, 2013 1 次提交
    • V
      ALSA: compress: fix drain calls blocking other compress functions (v6) · f44f2a54
      由 Vinod Koul 提交于 
      The drain and drain_notify callback were blocked by low level driver
until the draining was complete. Due to this being invoked with big
fat mutex held, others ops like reading timestamp, calling pause, drop
were blocked.

So to fix this we add a new snd_compr_drain_notify() API. This would
be required to be invoked by low level driver when drain or partial
drain has been completed by the DSP. Thus we make the drain and
partial_drain callback as non blocking and driver returns immediately
after notifying DSP.  The waiting is done while releasing the lock so
that other ops can go ahead.

[ The commit 917f4b5c was wrongly applied from the preliminary
  patch.  This commit corrects to the final version.
  Sorry for inconvenience!  -- tiwai ]
Signed-off-by: NVinod Koul <vinod.koul@intel.com>
CC: stable@vger.kernel.org
Signed-off-by: NTakashi Iwai <tiwai@suse.de>
      f44f2a54
  47. 24 10月, 2013 1 次提交
    • V
      ALSA: compress: fix drain calls blocking other compress functions · 917f4b5c
      由 Vinod Koul 提交于 
      The drain and drain_notify callback were blocked by low level driver untill the
draining was complete. Due to this being invoked with big fat mutex held, others
ops like reading timestamp, calling pause, drop were blocked.

So to fix this we add a new snd_compr_drain_notify() API. This would be required
to be invoked by low level driver when drain or partial drain has been completed
by the DSP. Thus we make the drain and partial_drain callback as non blocking
and driver returns immediately after notifying DSP.
The waiting is done while relasing the lock so that other ops can go ahead.
Signed-off-by: NVinod Koul <vinod.koul@intel.com>
CC: stable@vger.kernel.org
Signed-off-by: NTakashi Iwai <tiwai@suse.de>
      917f4b5c
  49. 26 9月, 2013 1 次提交
  51. 20 9月, 2013 1 次提交
  53. 29 7月, 2013 1 次提交
  55. 29 4月, 2013 1 次提交
  57. 22 4月, 2013 2 次提交
  59. 21 4月, 2013 2 次提交