linux-kernel - Re: [PATCH] ALSA: usb-audio: don't try to get Outlaw RR2150 sample rate

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Date:	Sat, 30 May 2015 14:17:29 +0200
From:	Takashi Iwai <tiwai@...e.de>
To:	Eric Wong <normalperson@...t.net>
Cc:	alsa-devel@...a-project.org, linux-kernel@...r.kernel.org,
	Joe Turner <joe@...po.co.uk>
Subject: Re: [PATCH] ALSA: usb-audio: don't try to get Outlaw RR2150 sample rate

At Sat, 30 May 2015 09:15:39 +0000,
Eric Wong wrote:
> 
> 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>
> Cc: Takashi Iwai <tiwai@...e.de>

Applied (with Cc to stable), thanks.


Takashi

> ---
>  sound/usb/quirks.c | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/sound/usb/quirks.c b/sound/usb/quirks.c
> index 32631a8..2ea5b33 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(0x04D8, 0xFEEA): /* Benchmark DAC1 Pre */
> +	case USB_ID(0x074D, 0x3553): /* Outlaw RR2150 (Micronas UAC3553B) */
>  		return true;
>  	}
>  	return false;
> -- 
> EW
> 
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