ALSA: usb-audio: silence a superfluous warning

It is not advisable to print a warning when a device does not support
setting the sample rate because this is perfectly valid for devices with
a single rate or where rates are implicitly changed by selecting another
alternate setting.

Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

diff --git a/sound/usb/clock.c b/sound/usb/clock.c
index 66bd157..b853f8d 100644 (file)
--- a/sound/usb/clock.c
+++ b/sound/usb/clock.c
@@ -204,11 +204,8 @@ static int set_sample_rate_v1(struct snd_usb_audio *chip, int iface,
        ep = get_endpoint(alts, 0)->bEndpointAddress;
 
        /* if endpoint doesn't have sampling rate control, bail out */
-       if (!(fmt->attributes & UAC_EP_CS_ATTR_SAMPLE_RATE)) {
-               snd_printk(KERN_WARNING "%d:%d:%d: endpoint lacks sample rate attribute bit, cannot set.\n",
-                                  dev->devnum, iface, fmt->altsetting);
+       if (!(fmt->attributes & UAC_EP_CS_ATTR_SAMPLE_RATE))
                return 0;
-       }
 
        data[0] = rate;
        data[1] = rate >> 8;