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linux-stable/sound/core
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Alan Young b6409dd6bd ALSA: ctl: Fix copy of updated id with element read/write 
When control_compat.c:copy_ctl_value_to_user() is used, by
ctl_elem_read_user() & ctl_elem_write_user(), it must also copy back the
snd_ctl_elem_id value that may have been updated (filled in) by the call
to snd_ctl_elem_read/snd_ctl_elem_write().

This matches the functionality provided by snd_ctl_elem_read_user() and
snd_ctl_elem_write_user(), via snd_ctl_build_ioff().

Without this, and without making additional calls to snd_ctl_info()
which are unnecessary when using the non-compat calls, a userspace
application will not know the numid value for the element and
consequently will not be able to use the poll/read interface on the
control file to determine which elements have updates.

Signed-off-by: Alan Young <consult.awy@gmail.com>
Cc: <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20211202150607.543389-1-consult.awy@gmail.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2021-12-02 16:41:07 +01:00
..
oss ALSA: pcm: oss: Handle missing errors in snd_pcm_oss_change_params*() 2021-12-02 09:02:22 +01:00
seq Merge branch 'for-linus' into for-next 2021-08-09 07:53:22 +02:00
compress_offload.c ALSA: compress: Initialize mutex in snd_compress_new() 2021-07-15 10:22:38 +02:00
control.c ALSA: control: Minor optimization for SNDRV_CTL_IOCTL_POWER_STATE 2021-05-25 08:49:06 +02:00
control_compat.c ALSA: ctl: Fix copy of updated id with element read/write 2021-12-02 16:41:07 +01:00
control_led.c ALSA: core: control_led: use strscpy instead of strlcpy 2021-08-13 08:05:17 +02:00
ctljack.c ALSA: Convert strlcpy to strscpy when return value is unused 2021-01-08 09:30:05 +01:00
device.c ALSA: core: Add snd_device_get_state() helper 2020-03-23 18:09:19 +01:00
hrtimer.c ALSA: timer: Replace tasklet with work 2020-09-09 18:32:52 +02:00
hwdep.c ALSA: core: Fix assignment in if condition 2021-06-09 17:30:22 +02:00
hwdep_compat.c ALSA: compat_ioctl: avoid compat_alloc_user_space 2020-09-21 10:37:07 +02:00
info.c isystem: trim/fixup stdarg.h and other headers 2021-08-19 09:02:55 +09:00
info_oss.c ALSA: core: Fix assignment in if condition 2021-06-09 17:30:22 +02:00
init.c ALSA: core: Fix double calls of snd_card_free() via devres 2021-07-31 10:36:06 +02:00
isadma.c ALSA: core: Add device-managed request_dma() 2021-07-19 16:16:34 +02:00
jack.c ALSA: jack: implement software jack injection via debugfs 2021-02-02 10:37:07 +01:00
Kconfig ALSA: control - add generic LED trigger module as the new control layer 2021-03-30 15:33:58 +02:00
Makefile Revert "ALSA: memalloc: Convert x86 SG-buffer handling with non-contiguous type" 2021-11-04 22:10:03 +01:00
memalloc.c ALSA: memalloc: Remove a stale comment 2021-11-10 07:35:23 +01:00
memalloc_local.h ALSA: memalloc: Support for non-contiguous page allocation 2021-10-18 13:32:10 +02:00
memory.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
misc.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
pcm.c ALSA: pcm: use DEVICE_ATTR_RO macro 2021-05-25 09:00:04 +02:00
pcm_compat.c ALSA: memalloc: Support for non-contiguous page allocation 2021-10-18 13:32:10 +02:00
pcm_dmaengine.c ASoC: dmaengine_pcm: add peripheral configuration 2021-02-05 17:16:41 +00:00
pcm_drm_eld.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
pcm_iec958.c ALSA: iec958: Split status creation and fill 2021-06-08 17:05:41 +02:00
pcm_lib.c ALSA: memalloc: Support for non-contiguous page allocation 2021-10-18 13:32:10 +02:00
pcm_local.h ALSA: memalloc: Support for non-contiguous page allocation 2021-10-18 13:32:10 +02:00
pcm_memory.c ALSA: memalloc: Support for non-contiguous page allocation 2021-10-18 13:32:10 +02:00
pcm_misc.c ALSA: pcm: Fix assignment in if condition 2021-06-09 17:30:24 +02:00
pcm_native.c ALSA: memalloc: Support for non-contiguous page allocation 2021-10-18 13:32:10 +02:00
pcm_param_trace.h
pcm_timer.c ALSA: timer: Constify snd_timer_hardware definitions 2020-01-03 09:24:07 +01:00
pcm_trace.h
rawmidi.c ALSA: rawmidi: introduce SNDRV_RAWMIDI_IOCTL_USER_PVERSION 2021-09-23 09:26:40 +02:00
rawmidi_compat.c ALSA: rawmidi: Add framing mode 2021-05-17 16:02:44 +02:00
seq_device.c ALSA: seq: Fix a potential UAF by wrong private_free call order 2021-09-30 14:13:22 +02:00
sgbuf.c Revert "ALSA: memalloc: Convert x86 SG-buffer handling with non-contiguous type" 2021-11-04 22:10:03 +01:00
sound.c ALSA: core: Fix assignment in if condition 2021-06-09 17:30:22 +02:00
sound_oss.c ALSA: core: Fix assignment in if condition 2021-06-09 17:30:22 +02:00
timer.c ALSA: timer: Unconditionally unlink slave instances, too 2021-11-05 11:27:27 +01:00
timer_compat.c ALSA: Convert strlcpy to strscpy when return value is unused 2021-01-08 09:30:05 +01:00
vmaster.c ALSA: Replace the word "slave" in vmaster API 2020-07-20 10:10:47 +02:00