diff options
| author | Takashi Iwai <tiwai@suse.de> | 2013-06-05 08:35:26 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-06-13 09:44:53 -0700 |
| commit | 395801f773ba978d4c0d3cb0675e534624ade228 (patch) | |
| tree | 8452fa7edaf5cd7186d3fb002ae504ad4baed5aa /sound | |
| parent | 8e411de6df1711a8d930373bbccf044ba4573bcc (diff) | |
ALSA: usb-audio - Fix invalid volume resolution on Logitech HD webcam c270
commit 11e7064f35bb87da8f427d1aa4bbd8b7473a3993 upstream.
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>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'sound')
| -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 f008fc70d39..e075a67bbbb 100644 --- a/sound/usb/mixer.c +++ b/sound/usb/mixer.c @@ -822,6 +822,7 @@ 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. |