ALSA: usb-audio: replace hardcoded value with const

In this context, 0x01 is USB_ENDPOINT_XFER_ISOC.

Signed-off-by: Eldad Zack <eldad@fogrefinery.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

diff --git a/sound/usb/pcm.c b/sound/usb/pcm.c
index 7c64b95..f488a49 100644 (file)
--- a/sound/usb/pcm.c
+++ b/sound/usb/pcm.c
@@ -384,7 +384,7 @@ static int set_format(struct snd_usb_substream *subs, struct audioformat *fmt)
                /* ... and check descriptor size before accessing bSynchAddress
                   because there is a version of the SB Audigy 2 NX firmware lacking
                   the audio fields in the endpoint descriptors */
-               if ((get_endpoint(alts, 1)->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) != 0x01 ||
+               if ((get_endpoint(alts, 1)->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) != USB_ENDPOINT_XFER_ISOC ||
                    (get_endpoint(alts, 1)->bLength >= USB_DT_ENDPOINT_AUDIO_SIZE &&
                     get_endpoint(alts, 1)->bSynchAddress != 0 &&
                     !implicit_fb)) {