xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

ALSA: hda - Fix yet remaining issue with vmaster 0dB initialization

Browse Source 
The previous fix for addressing the breakage in vmaster slave
initialization, commit a91d66129f ("ALSA: hda - Fix incorrect TLV
callback check introduced during set_fs() removal"), introduced a new
helper to process over each slave kctl.  However, this helper passes
only the original kctl, not the virtual slave kctl.  As a result,
HD-audio driver (which is the only user so far) couldn't initialize
the slave correctly because it's trying to update the value directly
with the original kctl, not with the mapped kctl.

This patch fixes the situation again by passing both the mapped slaved
and original slave kctls to the function.  Luckily there is a single
caller as of now, so changing the call signature is no big matter.

Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=197959
Fixes: a91d66129f ("ALSA: hda - Fix incorrect TLV callback check introduced during set_fs() removal")
Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Iwai
2017-11-22 12:34:56 +01:00
parent 0a62d6c966
commit d6c0615f51
3 changed files with 14 additions and 6 deletions
Download Patch File Download Diff File Expand all files Collapse all files

6
sound/core/vmaster.c
View File

@@ -495,7 +495,9 @@ EXPORT_SYMBOL_GPL(snd_ctl_sync_vmaster);
* Returns 0 if successful, or a negative error code.
*/
int snd_ctl_apply_vmaster_slaves(struct snd_kcontrol *kctl,
int (*func)(struct snd_kcontrol *, void *),
int (*func)(struct snd_kcontrol *vslave,
struct snd_kcontrol *slave,
void *arg),
void *arg)
{
struct link_master *master;
@@ -507,7 +509,7 @@ int snd_ctl_apply_vmaster_slaves(struct snd_kcontrol *kctl,
if (err < 0)
return err;
list_for_each_entry(slave, &master->slaves, list) {
err = func(&slave->slave, arg);
err = func(slave->kctl, &slave->slave, arg);
if (err < 0)
return err;
}