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

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Message-Id: <20150619203559.449604630@linuxfoundation.org>
Date:	Fri, 19 Jun 2015 13:35:32 -0700
From:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:	linux-kernel@...r.kernel.org
Cc:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	stable@...r.kernel.org, Eric Wong <normalperson@...t.net>,
	Joe Turner <joe@...po.co.uk>, Takashi Iwai <tiwai@...e.de>
Subject: [PATCH 4.0 042/105] ALSA: usb-audio: dont try to get Outlaw RR2150 sample rate

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

------------------

From: Eric Wong <normalperson@...t.net>

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@...t.net>
Cc: Joe Turner <joe@...po.co.uk>
Signed-off-by: Takashi Iwai <tiwai@...e.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 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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