Merge branch 'topic/usb-validation' into for-next

[tomoyo/tomoyo-test1.git] / sound / usb / pcm.c

diff --git a/sound/usb/pcm.c b/sound/usb/pcm.c
index e4bbf79..33cd267 100644 (file)
--- a/sound/usb/pcm.c
+++ b/sound/usb/pcm.c
@@ -457,6 +457,7 @@ static int set_sync_endpoint(struct snd_usb_substream *subs,
        }
        ep = get_endpoint(alts, 1)->bEndpointAddress;
        if (get_endpoint(alts, 0)->bLength >= USB_DT_ENDPOINT_AUDIO_SIZE &&
+           get_endpoint(alts, 0)->bSynchAddress != 0 &&
            ((is_playback && ep != (unsigned int)(get_endpoint(alts, 0)->bSynchAddress | USB_DIR_IN)) ||
             (!is_playback && ep != (unsigned int)(get_endpoint(alts, 0)->bSynchAddress & ~USB_DIR_IN)))) {
                dev_err(&dev->dev,