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ALSA: hiface: Add sanity checks for invalid EPs 

hiface usb-audio driver sets up URBs containing the fixed endpoints
without validation.  This may end up with an oops-like kernel warning
when submitted.

For avoiding it, this patch adds the calls of the new sanity-check
helper for URBs.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Iwai 2017-10-10 12:32:56 +02:00
parent 1f10034938
commit 5935b9526a
1 changed files with 7 additions and 2 deletions
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9
sound/usb/hiface/pcm.c
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@ -541,6 +541,8 @@ static int hiface_pcm_init_urb(struct pcm_urb *urb,
usb_fill_bulk_urb(&urb->instance, chip->dev,
usb_sndbulkpipe(chip->dev, ep), (void *)urb->buffer,
PCM_PACKET_SIZE, handler, urb);
if (usb_urb_ep_type_check(&urb->instance))
return -EINVAL;
init_usb_anchor(&urb->submitted);
return 0;
@ -599,9 +601,12 @@ int hiface_pcm_init(struct hiface_chip *chip, u8 extra_freq)
mutex_init(&rt->stream_mutex);
spin_lock_init(&rt->playback.lock);
for (i = 0; i < PCM_N_URBS; i++)
hiface_pcm_init_urb(&rt->out_urbs[i], chip, OUT_EP,
for (i = 0; i < PCM_N_URBS; i++) {
ret = hiface_pcm_init_urb(&rt->out_urbs[i], chip, OUT_EP,
hiface_pcm_out_urb_handler);
if (ret < 0)
return ret;
}
ret = snd_pcm_new(chip->card, "USB-SPDIF Audio", 0, 1, 0, &pcm);
if (ret < 0) {