Re: [alsa-devel] Lost dB volumes on USB headset between 2.6.38 and 3.0

At Tue, 16 Aug 2011 13:31:52 +0100, Colin Guthrie wrote:

...

diff --git a/sound/usb/mixer.c b/sound/usb/mixer.c index c04d7c7..cdd19d7 100644 --- a/sound/usb/mixer.c +++ b/sound/usb/mixer.c @@ -152,6 +152,7 @@ static inline void check_mapped_dB(const struct usbmix_name_map *p, if (p && p->dB) { cval->dBmin = p->dB->min; cval->dBmax = p->dB->max;

• cval->initialized = 1;
  

  }

}

@@ -1092,7 +1093,7 @@ static void build_feature_ctl(struct mixer_build *state, void *raw_desc, " Switch" : " Volume"); if (control == UAC_FU_VOLUME) { check_mapped_dB(map, cval);

• 	if (cval->dBmin < cval->dBmax) {
  

• 	if (cval->dBmin < cval->dBmax || !cval->initialized) {
  	kctl->tlv.c = mixer_vol_tlv;
  	kctl->vd[0].access |= 
  		SNDRV_CTL_ELEM_ACCESS_TLV_READ |
  

Not had a chance to test this yet but I will when I get a moment.

Any chance to test the patch?

Takashi