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@einfochips.com --- 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) {