mirrors
/
linux-stable
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
1
0
Fork 0
Code Issues Releases Wiki Activity

ALSA: usb-audio: simplify set_sync_ep_implicit_fb_quirk 

Signed-off-by: Alberto Aguirre <albaguirre@gmail.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Alberto Aguirre 2018-04-18 09:35:34 -05:00 committed by Takashi Iwai
parent c99c5a3bb5
commit 103e962564
1 changed files with 20 additions and 32 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

52
sound/usb/pcm.c
View File

@ -321,6 +321,7 @@ static int set_sync_ep_implicit_fb_quirk(struct snd_usb_substream *subs,
struct usb_host_interface *alts;
struct usb_interface *iface;
unsigned int ep;
unsigned int ifnum;
/* Implicit feedback sync EPs consumers are always playback EPs */
if (subs->direction != SNDRV_PCM_STREAM_PLAYBACK)
@ -330,44 +331,23 @@ static int set_sync_ep_implicit_fb_quirk(struct snd_usb_substream *subs,
case USB_ID(0x0763, 0x2030): /* M-Audio Fast Track C400 */
case USB_ID(0x0763, 0x2031): /* M-Audio Fast Track C600 */
ep = 0x81;
iface = usb_ifnum_to_if(dev, 3);
if (!iface || iface->num_altsetting == 0)
return -EINVAL;
alts = &iface->altsetting[1];
goto add_sync_ep;
break;
ifnum = 3;
goto add_sync_ep_from_ifnum;
case USB_ID(0x0763, 0x2080): /* M-Audio FastTrack Ultra */
case USB_ID(0x0763, 0x2081):
ep = 0x81;
iface = usb_ifnum_to_if(dev, 2);
if (!iface || iface->num_altsetting == 0)
return -EINVAL;
alts = &iface->altsetting[1];
goto add_sync_ep;
case USB_ID(0x2466, 0x8003):
ifnum = 2;
goto add_sync_ep_from_ifnum;
case USB_ID(0x2466, 0x8003): /* Fractal Audio Axe-Fx II */
ep = 0x86;
iface = usb_ifnum_to_if(dev, 2);
if (!iface || iface->num_altsetting == 0)
return -EINVAL;
alts = &iface->altsetting[1];
goto add_sync_ep;
case USB_ID(0x1397, 0x0002):
ifnum = 2;
goto add_sync_ep_from_ifnum;
case USB_ID(0x1397, 0x0002): /* Behringer UFX1204 */
ep = 0x81;
iface = usb_ifnum_to_if(dev, 1);
if (!iface || iface->num_altsetting == 0)
return -EINVAL;
alts = &iface->altsetting[1];
goto add_sync_ep;
ifnum = 1;
goto add_sync_ep_from_ifnum;
}
if (attr == USB_ENDPOINT_SYNC_ASYNC &&
altsd->bInterfaceClass == USB_CLASS_VENDOR_SPEC &&
altsd->bInterfaceProtocol == 2 &&
@ -382,6 +362,14 @@ static int set_sync_ep_implicit_fb_quirk(struct snd_usb_substream *subs,
/* No quirk */
return 0;
add_sync_ep_from_ifnum:
iface = usb_ifnum_to_if(dev, ifnum);
if (!iface || iface->num_altsetting == 0)
return -EINVAL;
alts = &iface->altsetting[1];
add_sync_ep:
subs->sync_endpoint = snd_usb_add_endpoint(subs->stream->chip,
alts, ep, !subs->direction,