mirrors/linux-stable
1
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git synced 2024-09-30 22:26:55 +00:00
Code Issues Releases Wiki Activity

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

Browse source 
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>
Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Guillaume Fougnies 2016-01-26 00:28:27 +01:00 committed by Takashi Iwai
parent 462b3f161b
commit 5a4ff9ec8d
1 changed files with 13 additions and 1 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

14
sound/usb/quirks.c
View file

@ -1205,8 +1205,12 @@ 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,
@ -1221,6 +1225,14 @@ 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
*/