[alsa-devel] [PATCH] ALSA: usb-audio: Add quirk for MS LifeCam HD-3000

Vittorio G (VittGam) linuxbugs at vittgam.net
Fri May 22 21:15:19 CEST 2015


Microsoft LifeCam HD-3000 (045e:0779) needs a similar quirk for
suppressing the unsupported sample rate inquiry.

Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=98481
Cc: <stable at vger.kernel.org>
Cc: Jaroslav Kysela <perex at perex.cz>
Cc: Takashi Iwai <tiwai at suse.de>
Signed-off-by: Vittorio Gambaletta <linuxbugs at vittgam.net>
---

The dmesg is showing this every time the ALSA audio is opened
by the application:

[3759907.370000] 2:3:1: cannot get freq at ep 0x82

And in fact I had to initialize ALSA and v4l2 in a specific order
in my application in order for them to both work.

diff --git a/sound/usb/quirks.c b/sound/usb/quirks.c
index 46facfc..2917534 100644
--- a/sound/usb/quirks.c
+++ b/sound/usb/quirks.c
@@ -1118,6 +1118,7 @@ bool snd_usb_get_sample_rate_quirk(struct snd_usb_audio *chip)
  	case USB_ID(0x045E, 0x075D): /* MS Lifecam Cinema  */
  	case USB_ID(0x045E, 0x076D): /* MS Lifecam HD-5000 */
  	case USB_ID(0x045E, 0x0772): /* MS Lifecam Studio */
+	case USB_ID(0x045E, 0x0779): /* MS Lifecam HD-3000 */
  	case USB_ID(0x04D8, 0xFEEA): /* Benchmark DAC1 Pre */
  		return true;
  	}



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