|
@@ -104,6 +104,15 @@ static bool uac_clock_source_is_valid(struct snd_usb_audio *chip, int source_id)
|
|
|
int err;
|
|
|
unsigned char data;
|
|
|
struct usb_device *dev = chip->dev;
|
|
|
+ struct uac_clock_source_descriptor *cs_desc =
|
|
|
+ snd_usb_find_clock_source(chip->ctrl_intf, source_id);
|
|
|
+
|
|
|
+ if (!cs_desc)
|
|
|
+ return 0;
|
|
|
+
|
|
|
+ /* If a clock source can't tell us whether it's valid, we assume it is */
|
|
|
+ if (!uac2_control_is_readable(cs_desc->bmControls, UAC2_CS_CONTROL_CLOCK_VALID))
|
|
|
+ return 1;
|
|
|
|
|
|
err = snd_usb_ctl_msg(dev, usb_rcvctrlpipe(dev, 0), UAC2_CS_CUR,
|
|
|
USB_TYPE_CLASS | USB_RECIP_INTERFACE | USB_DIR_IN,
|
|
@@ -114,7 +123,7 @@ static bool uac_clock_source_is_valid(struct snd_usb_audio *chip, int source_id)
|
|
|
if (err < 0) {
|
|
|
snd_printk(KERN_WARNING "%s(): cannot get clock validity for id %d\n",
|
|
|
__func__, source_id);
|
|
|
- return err;
|
|
|
+ return 0;
|
|
|
}
|
|
|
|
|
|
return !!data;
|