raspi/linux
1
0
Fork 1
mirror of https://github.com/raspberrypi/linux.git synced 2025-12-06 10:00:17 +00:00
Code Issues Projects Releases Wiki Activity

ALSA: ctl: fix error path at adding user-defined element set

Browse Source 
commit 95a793c3bc upstream.

When processing request to add/replace user-defined element set, check
of given element identifier and decision of numeric identifier is done
in "__snd_ctl_add_replace()" helper function. When the result of check
is wrong, the helper function returns error code. The error code shall
be returned to userspace application.

Current implementation includes bug to return zero to userspace application
regardless of the result. This commit fixes the bug.

Cc: <stable@vger.kernel.org>
Fixes: e1a7bfe380 ("ALSA: control: Fix race between adding and removing a user element")
Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Link: https://lore.kernel.org/r/20201113092043.16148-1-o-takashi@sakamocchi.jp
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Takashi Sakamoto
2020-11-13 18:20:43 +09:00
committed by Greg Kroah-Hartman
parent dead6fe9d0
commit 0976f5c67a
1 changed files with 1 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
sound/core/control.c
View File

@@ -1527,7 +1527,7 @@ static int snd_ctl_elem_add(struct snd_ctl_file *file,
unlock:
up_write(&card->controls_rwsem);
return 0;
return err;
}
static int snd_ctl_elem_add_user(struct snd_ctl_file *file,