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| author | Takashi Iwai <tiwai@suse.de> | 2013-06-05 08:35:26 +0200 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2013-06-05 08:35:26 +0200 |
| commit | 11e7064f35bb87da8f427d1aa4bbd8b7473a3993 (patch) | |
| tree | f3473d6219d632227584e3ee26e158fc9ebca9a5 /sound/usb/mixer.c | |
| parent | ALSA: usb-audio - Apply Logitech QuickCam Pro 9000 quirk only to audio iface (diff) | |
| download | linux-11e7064f35bb87da8f427d1aa4bbd8b7473a3993.tar.xz linux-11e7064f35bb87da8f427d1aa4bbd8b7473a3993.zip | |
ALSA: usb-audio - Fix invalid volume resolution on Logitech HD webcam c270
USB audio driver spews an error message when probing Logitech HD
webcam c270:
ALSA mixer.c:1300 usb_audio: Warning! Unlikely big volume range (=6144), cval->res is probably wrong.
ALSA mixer.c:1304 usb_audio: [5] FU [Mic Capture Volume] ch = 1, val = 1536/7680/1
Obviously the device needs a fixed volume resolution (cval->res = 384)
like other Logitech devices.
Bugzilla: https://bugzilla.novell.com/show_bug.cgi?id=821735
Reported-and-tested-by: Cristian RodrÃguez <crrodriguez@opensuse.org>
Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to '')
| -rw-r--r-- | sound/usb/mixer.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/sound/usb/mixer.c b/sound/usb/mixer.c index ca4739c3f650..e5c7f9f20fdd 100644 --- a/sound/usb/mixer.c +++ b/sound/usb/mixer.c @@ -886,6 +886,7 @@ static void volume_control_quirks(struct usb_mixer_elem_info *cval, case USB_ID(0x046d, 0x0808): case USB_ID(0x046d, 0x0809): case USB_ID(0x046d, 0x081d): /* HD Webcam c510 */ + case USB_ID(0x046d, 0x0825): /* HD Webcam c270 */ case USB_ID(0x046d, 0x0991): /* Most audio usb devices lie about volume resolution. * Most Logitech webcams have res = 384. |