unsigned int i;
for (i = 0; i < stream->queue_length; ++i)
- usb_kill_urb(&stream->urbs[i]->urb);
+ if (stream->urbs[i])
+ usb_kill_urb(&stream->urbs[i]->urb);
}
static int enable_iso_interface(struct ua101 *ua, unsigned int intf_index)
{
struct usb_host_interface *alts;
+ if (!ua->intf[intf_index])
+ return;
+
alts = ua->intf[intf_index]->cur_altsetting;
if (alts->desc.bAlternateSetting != 0) {
int err = usb_set_interface(ua->dev,
static void abort_alsa_capture(struct ua101 *ua)
{
- if (test_bit(ALSA_CAPTURE_RUNNING, &ua->states))
+ unsigned long flags;
+
+ if (test_bit(ALSA_CAPTURE_RUNNING, &ua->states)) {
+ snd_pcm_stream_lock_irqsave(ua->capture.substream, flags);
snd_pcm_stop(ua->capture.substream, SNDRV_PCM_STATE_XRUN);
+ snd_pcm_stream_unlock_irqrestore(ua->capture.substream, flags);
+ }
}
static void abort_alsa_playback(struct ua101 *ua)
{
- if (test_bit(ALSA_PLAYBACK_RUNNING, &ua->states))
+ unsigned long flags;
+
+ if (test_bit(ALSA_PLAYBACK_RUNNING, &ua->states)) {
+ snd_pcm_stream_lock_irqsave(ua->playback.substream, flags);
snd_pcm_stop(ua->playback.substream, SNDRV_PCM_STATE_XRUN);
+ snd_pcm_stream_unlock_irqrestore(ua->playback.substream, flags);
+ }
}
static int set_stream_hw(struct ua101 *ua, struct snd_pcm_substream *substream,
{
unsigned int i;
- for (i = 0; i < stream->queue_length; ++i)
+ for (i = 0; i < stream->queue_length; ++i) {
kfree(stream->urbs[i]);
+ stream->urbs[i] = NULL;
+ }
}
static void free_usb_related_resources(struct ua101 *ua,
struct usb_interface *interface)
{
unsigned int i;
+ struct usb_interface *intf;
+ mutex_lock(&ua->mutex);
free_stream_urbs(&ua->capture);
free_stream_urbs(&ua->playback);
+ mutex_unlock(&ua->mutex);
free_stream_buffers(ua, &ua->capture);
free_stream_buffers(ua, &ua->playback);
- for (i = 0; i < ARRAY_SIZE(ua->intf); ++i)
- if (ua->intf[i]) {
- usb_set_intfdata(ua->intf[i], NULL);
- if (ua->intf[i] != interface)
+ for (i = 0; i < ARRAY_SIZE(ua->intf); ++i) {
+ mutex_lock(&ua->mutex);
+ intf = ua->intf[i];
+ ua->intf[i] = NULL;
+ mutex_unlock(&ua->mutex);
+ if (intf) {
+ usb_set_intfdata(intf, NULL);
+ if (intf != interface)
usb_driver_release_interface(&ua101_driver,
- ua->intf[i]);
+ intf);
}
+ }
}
static void ua101_card_free(struct snd_card *card)