ALSA: usb-audio: Fix TEAC UD-501/UD-503/NT-503 usb delay

commit 5a4ff9ec8d6edd2ab1cfe8ce6a080d6e57cbea9a upstream.

TEAC UD-501/UD-503/NT-503 fail to switch properly between different
rate/format. Similar to 'Playback Design', this patch corrects the
invalid clock source error for TEAC products and avoids complete
freeze of the usb interface of 503 series.

Signed-off-by: Guillaume Fougnies <guillaume@eulerian.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/sound/usb/quirks.c b/sound/usb/quirks.c
index 94cd28c2bd8d561ae6c72a00896d14d14afce48d..44550a4cf893470d6d77fa07fb98b05d118df752 100644 (file)
--- a/sound/usb/quirks.c
+++ b/sound/usb/quirks.c
@@ -900,8 +900,12 @@ void snd_usb_set_interface_quirk(struct usb_device *dev)
         * "Playback Design" products need a 50ms delay after setting the
         * USB interface.
         */
-       if (le16_to_cpu(dev->descriptor.idVendor) == 0x23ba)
+       switch (le16_to_cpu(dev->descriptor.idVendor)) {
+       case 0x23ba: /* Playback Design */
+       case 0x0644: /* TEAC Corp. */
                mdelay(50);
+               break;
+       }
 }
 
 void snd_usb_ctl_msg_quirk(struct usb_device *dev, unsigned int pipe,
@@ -916,6 +920,14 @@ void snd_usb_ctl_msg_quirk(struct usb_device *dev, unsigned int pipe,
            (requesttype & USB_TYPE_MASK) == USB_TYPE_CLASS)
                mdelay(20);
 
+       /*
+        * "TEAC Corp." products need a 20ms delay after each
+        * class compliant request
+        */
+       if ((le16_to_cpu(dev->descriptor.idVendor) == 0x0644) &&
+           (requesttype & USB_TYPE_MASK) == USB_TYPE_CLASS)
+               mdelay(20);
+
        /* Marantz/Denon devices with USB DAC functionality need a delay
         * after each class compliant request
         */