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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2011-11-06 12:14:22 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2011-11-06 12:14:22 -0800 |
| commit | 9991357259a5718813881bae96d3704bb3f531e2 (patch) | |
| tree | 1d57363d0658ecdfe18bce35ffecfb9f09bb7b3b /sound/usb | |
| parent | c861cd3e92d92ae946e19099f198018fcb4fd887 (diff) | |
| parent | f441917256c9727d3573ca2f89f657a75e06a262 (diff) | |
| download | linux-9991357259a5718813881bae96d3704bb3f531e2.tar.bz2 | |
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
ALSA: hda - Revert the check of NO_PRESENCE pincfg default bit
ALSA: hda - Fix a regression for DMA-position check with CA0110
ALSA: hda - Fix silent output regression with ALC861
ALSA: control: remove compilation warning on 32-bit
ALSA: ua101: fix crash when unplugging
Diffstat (limited to 'sound/usb')
| -rw-r--r-- | sound/usb/misc/ua101.c | 28 |
1 files changed, 21 insertions, 7 deletions
diff --git a/sound/usb/misc/ua101.c b/sound/usb/misc/ua101.c index 67bec7612442..c0609c210303 100644 --- a/sound/usb/misc/ua101.c +++ b/sound/usb/misc/ua101.c @@ -459,7 +459,8 @@ static void kill_stream_urbs(struct ua101_stream *stream) 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) @@ -484,6 +485,9 @@ static void disable_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, @@ -1144,27 +1148,37 @@ static void free_stream_urbs(struct ua101_stream *stream) { 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) |