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authorAlberto Aguirre <albaguirre@gmail.com>2018-04-18 09:35:34 -0500
committerTakashi Iwai <tiwai@suse.de>2018-04-19 11:49:22 +0200
commit103e9625647ad74d201e26fb74afcd8479142a37 (patch)
tree8b652c5278ef5ca83590c5d4c01f40f846eb66bd /sound/usb/pcm.c
parentc99c5a3bb575f67700f9d1b216652750ea4a31a5 (diff)
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>
Diffstat (limited to 'sound/usb/pcm.c')
-rw-r--r--sound/usb/pcm.c52
1 files changed, 20 insertions, 32 deletions
diff --git a/sound/usb/pcm.c b/sound/usb/pcm.c
index 3cbfae6604f9..c0746cc20ac4 100644
--- a/sound/usb/pcm.c
+++ b/sound/usb/pcm.c
@@ -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,