summaryrefslogtreecommitdiff
path: root/sound/usb/endpoint.c
diff options
context:
space:
mode:
Diffstat (limited to 'sound/usb/endpoint.c')
-rw-r--r--sound/usb/endpoint.c73
1 files changed, 6 insertions, 67 deletions
diff --git a/sound/usb/endpoint.c b/sound/usb/endpoint.c
index e6906901debb..0f647d22cb4a 100644
--- a/sound/usb/endpoint.c
+++ b/sound/usb/endpoint.c
@@ -414,7 +414,7 @@ struct snd_usb_endpoint *snd_usb_add_endpoint(struct snd_usb_audio *chip,
{
struct list_head *p;
struct snd_usb_endpoint *ep;
- int ret, is_playback = direction == SNDRV_PCM_STREAM_PLAYBACK;
+ int is_playback = direction == SNDRV_PCM_STREAM_PLAYBACK;
mutex_lock(&chip->mutex);
@@ -434,16 +434,6 @@ struct snd_usb_endpoint *snd_usb_add_endpoint(struct snd_usb_audio *chip,
type == SND_USB_ENDPOINT_TYPE_DATA ? "data" : "sync",
ep_num);
- /* select the alt setting once so the endpoints become valid */
- ret = usb_set_interface(chip->dev, alts->desc.bInterfaceNumber,
- alts->desc.bAlternateSetting);
- if (ret < 0) {
- snd_printk(KERN_ERR "%s(): usb_set_interface() failed, ret = %d\n",
- __func__, ret);
- ep = NULL;
- goto __exit_unlock;
- }
-
ep = kzalloc(sizeof(*ep), GFP_KERNEL);
if (!ep)
goto __exit_unlock;
@@ -831,9 +821,6 @@ int snd_usb_endpoint_start(struct snd_usb_endpoint *ep)
if (++ep->use_count != 1)
return 0;
- if (snd_BUG_ON(!test_bit(EP_FLAG_ACTIVATED, &ep->flags)))
- return -EINVAL;
-
/* just to be sure */
deactivate_urbs(ep, 0, 1);
wait_clear_urbs(ep);
@@ -911,9 +898,6 @@ void snd_usb_endpoint_stop(struct snd_usb_endpoint *ep,
if (snd_BUG_ON(ep->use_count == 0))
return;
- if (snd_BUG_ON(!test_bit(EP_FLAG_ACTIVATED, &ep->flags)))
- return;
-
if (--ep->use_count == 0) {
deactivate_urbs(ep, force, can_sleep);
ep->data_subs = NULL;
@@ -927,42 +911,6 @@ void snd_usb_endpoint_stop(struct snd_usb_endpoint *ep,
}
/**
- * snd_usb_endpoint_activate: activate an snd_usb_endpoint
- *
- * @ep: the endpoint to activate
- *
- * If the endpoint is not currently in use, this functions will select the
- * correct alternate interface setting for the interface of this endpoint.
- *
- * In case of any active users, this functions does nothing.
- *
- * Returns an error if usb_set_interface() failed, 0 in all other
- * cases.
- */
-int snd_usb_endpoint_activate(struct snd_usb_endpoint *ep)
-{
- if (ep->use_count != 0)
- return 0;
-
- if (!ep->chip->shutdown &&
- !test_and_set_bit(EP_FLAG_ACTIVATED, &ep->flags)) {
- int ret;
-
- ret = usb_set_interface(ep->chip->dev, ep->iface, ep->alt_idx);
- if (ret < 0) {
- snd_printk(KERN_ERR "%s() usb_set_interface() failed, ret = %d\n",
- __func__, ret);
- clear_bit(EP_FLAG_ACTIVATED, &ep->flags);
- return ret;
- }
-
- return 0;
- }
-
- return -EBUSY;
-}
-
-/**
* snd_usb_endpoint_deactivate: deactivate an snd_usb_endpoint
*
* @ep: the endpoint to deactivate
@@ -980,24 +928,15 @@ int snd_usb_endpoint_deactivate(struct snd_usb_endpoint *ep)
if (!ep)
return -EINVAL;
+ deactivate_urbs(ep, 1, 1);
+ wait_clear_urbs(ep);
+
if (ep->use_count != 0)
return 0;
- if (!ep->chip->shutdown &&
- test_and_clear_bit(EP_FLAG_ACTIVATED, &ep->flags)) {
- int ret;
-
- ret = usb_set_interface(ep->chip->dev, ep->iface, 0);
- if (ret < 0) {
- snd_printk(KERN_ERR "%s(): usb_set_interface() failed, ret = %d\n",
- __func__, ret);
- return ret;
- }
+ clear_bit(EP_FLAG_ACTIVATED, &ep->flags);
- return 0;
- }
-
- return -EBUSY;
+ return 0;
}
/**