[PATCH 4.0 042/105] ALSA: usb-audio: dont try to get Outlaw RR2150 sample rate

From: Greg Kroah-Hartman
Date: Fri Jun 19 2015 - 16:47:25 EST

4.0-stable review patch. If anyone has any objections, please let me know.


From: Eric Wong <normalperson@xxxxxxxx>

commit 2f80b2958abe5658000d5ad9b45a36ecf879666e upstream.

This quirk allows us to avoid the noisy:

current rate 0 is different from the runtime rate

message every time playback starts. While USB DAC in the RR2150
supports reading the sample rate, it never returns a sample rate
other than zero in my observation with common sample rates.

Signed-off-by: Eric Wong <normalperson@xxxxxxxx>
Cc: Joe Turner <joe@xxxxxxxxxxx>
Signed-off-by: Takashi Iwai <tiwai@xxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>

sound/usb/quirks.c | 1 +
1 file changed, 1 insertion(+)

--- a/sound/usb/quirks.c
+++ b/sound/usb/quirks.c
@@ -1120,6 +1120,7 @@ bool snd_usb_get_sample_rate_quirk(struc
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 */
+ case USB_ID(0x074D, 0x3553): /* Outlaw RR2150 (Micronas UAC3553B) */
return true;
return false;

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