X-Git-Url: https://git.stricted.de/?a=blobdiff_plain;f=sound%2Fusb%2Fmisc%2Fua101.c;h=e42805862ce569a198084cdb0770957d3bad11cf;hb=8c3f5d8a9b7d0d8506bc2a0525e012eae02b1853;hp=67bec76124421d12d7250675d6526a98bb886597;hpb=94bd217e2d683719ab21a4ac117d8a1b91cbedc9;p=GitHub%2Fmt8127%2Fandroid_kernel_alcatel_ttab.git

diff --git a/sound/usb/misc/ua101.c b/sound/usb/misc/ua101.c
index 67bec7612442..e42805862ce5 100644
--- a/sound/usb/misc/ua101.c
+++ b/sound/usb/misc/ua101.c
@@ -52,7 +52,7 @@ MODULE_SUPPORTED_DEVICE("{{Edirol,UA-101},{Edirol,UA-1000}}");
 
 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;
 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;
-static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;
+static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;
 static unsigned int queue_length = 21;
 
 module_param_array(index, int, NULL, 0444);
@@ -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)