Sorry for resending it again and again. This is since submitting a patch
first time. Please never mind.
Consider the below thing.
Have tested two usb audio mic devices.
At the time of initialization, SNDRV_MIXER_OSS_PRESENT_PVOLUME bit is not
set for MIC (slot 7).
So, the same should not be checked when an application tries to do gain
control
for audio recording devices. Just check
slot->present for SNDRV_MIXER_OSS_PRESENT_CVOLUME independently.
Verified with a simple application which opens /dev/dsp for recording and
/dev/mixer for volume control.
Signed-off-by: Viral Mehta <viral.mehta@xxxxxxxxxxxxxx>
---
sound/core/oss/mixer_oss.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
--- sound/core/oss/mixer_oss.org.c 2009-03-10 18:37:49.000000000 +0530
+++ sound/core/oss/mixer_oss.c 2009-03-10 18:37:07.000000000 +0530
@@ -692,6 +692,8 @@ static int snd_mixer_oss_put_volume1(str
snd_mixer_oss_put_volume1_vol(fmixer, pslot,
slot->numid[SNDRV_MIXER_OSS_ITEM_PVOLUME], left, right);
if (slot->present & SNDRV_MIXER_OSS_PRESENT_CVOLUME)
snd_mixer_oss_put_volume1_vol(fmixer, pslot,
slot->numid[SNDRV_MIXER_OSS_ITEM_CVOLUME], left, right);
+ } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_CVOLUME) {
+ snd_mixer_oss_put_volume1_vol(fmixer, pslot,
slot->numid[SNDRV_MIXER_OSS_ITEM_CVOLUME], left, right);
} else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GVOLUME) {
snd_mixer_oss_put_volume1_vol(fmixer, pslot,
slot->numid[SNDRV_MIXER_OSS_ITEM_GVOLUME], left, right);
} else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GLOBAL) {
--
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