ALSA: usb-audio: simplify endpoint deactivation code
For further code simplification, drop the conditional call for usb_kill_urb() with can_wait argument in deactivate_urbs(), and use only usb_unlink_urb() and wait_clear_urbs() pairs. Signed-off-by: Takashi Iwai <tiwai@suse.de>
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@ -515,33 +515,24 @@ void snd_usb_endpoint_sync_pending_stop(struct snd_usb_endpoint *ep)
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/*
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* unlink active urbs.
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*/
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static int deactivate_urbs(struct snd_usb_endpoint *ep, bool force, bool can_sleep)
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static int deactivate_urbs(struct snd_usb_endpoint *ep, bool force)
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{
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unsigned int i;
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int async;
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if (!force && ep->chip->shutdown) /* to be sure... */
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return -EBADFD;
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async = !can_sleep;
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clear_bit(EP_FLAG_RUNNING, &ep->flags);
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INIT_LIST_HEAD(&ep->ready_playback_urbs);
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ep->next_packet_read_pos = 0;
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ep->next_packet_write_pos = 0;
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if (!async && in_interrupt())
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return 0;
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for (i = 0; i < ep->nurbs; i++) {
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if (test_bit(i, &ep->active_mask)) {
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if (!test_and_set_bit(i, &ep->unlink_mask)) {
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struct urb *u = ep->urb[i].urb;
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if (async)
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usb_unlink_urb(u);
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else
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usb_kill_urb(u);
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usb_unlink_urb(u);
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}
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}
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}
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@ -561,7 +552,7 @@ static void release_urbs(struct snd_usb_endpoint *ep, int force)
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ep->prepare_data_urb = NULL;
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/* stop urbs */
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deactivate_urbs(ep, force, true);
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deactivate_urbs(ep, force);
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wait_clear_urbs(ep);
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for (i = 0; i < ep->nurbs; i++)
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@ -837,7 +828,7 @@ int snd_usb_endpoint_start(struct snd_usb_endpoint *ep, bool can_sleep)
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return 0;
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/* just to be sure */
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deactivate_urbs(ep, false, can_sleep);
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deactivate_urbs(ep, false);
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if (can_sleep)
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wait_clear_urbs(ep);
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@ -891,7 +882,7 @@ int snd_usb_endpoint_start(struct snd_usb_endpoint *ep, bool can_sleep)
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__error:
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clear_bit(EP_FLAG_RUNNING, &ep->flags);
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ep->use_count--;
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deactivate_urbs(ep, false, false);
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deactivate_urbs(ep, false);
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return -EPIPE;
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}
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@ -915,7 +906,7 @@ void snd_usb_endpoint_stop(struct snd_usb_endpoint *ep, bool wait)
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return;
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if (--ep->use_count == 0) {
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deactivate_urbs(ep, false, wait);
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deactivate_urbs(ep, false);
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ep->data_subs = NULL;
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ep->sync_slave = NULL;
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ep->retire_data_urb = NULL;
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@ -946,7 +937,7 @@ int snd_usb_endpoint_deactivate(struct snd_usb_endpoint *ep)
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if (!ep)
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return -EINVAL;
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deactivate_urbs(ep, true, true);
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deactivate_urbs(ep, true);
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wait_clear_urbs(ep);
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if (ep->use_count != 0)
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