修改led为gpio

hc

2024-10-12 a5969cabbb4660eab42b6ef0412cbbd1200cf14d

 kernel/sound/core/seq/seq_timer.c
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@@ -1,23 +1,8 @@
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+// SPDX-License-Identifier: GPL-2.0-or-later
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 /*
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  *   ALSA sequencer Timer
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  *   Copyright (c) 1998-1999 by Frank van de Pol <fvdpol@coil.demon.nl>
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  *                              Jaroslav Kysela <perex@perex.cz>
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- *
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- *
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- *   This program is free software; you can redistribute it and/or modify
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- *   it under the terms of the GNU General Public License as published by
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- *   the Free Software Foundation; either version 2 of the License, or
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- *   (at your option) any later version.
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- *
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- *   This program is distributed in the hope that it will be useful,
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- *   but WITHOUT ANY WARRANTY; without even the implied warranty of
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- *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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- *   GNU General Public License for more details.
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- *
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- *   You should have received a copy of the GNU General Public License
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- *   along with this program; if not, write to the Free Software
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- *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
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- *
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  */
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 #include <sound/core.h>
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@@ -287,7 +272,13 @@
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 		return -EINVAL;
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 	if (tmr->alsa_id.dev_class != SNDRV_TIMER_CLASS_SLAVE)
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 		tmr->alsa_id.dev_sclass = SNDRV_TIMER_SCLASS_SEQUENCER;
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-	err = snd_timer_open(&t, str, &tmr->alsa_id, q->queue);
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+	t = snd_timer_instance_new(str);
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+	if (!t)
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+		return -ENOMEM;
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+	t->callback = snd_seq_timer_interrupt;
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+	t->callback_data = q;
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+	t->flags |= SNDRV_TIMER_IFLG_AUTO;
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+	err = snd_timer_open(t, &tmr->alsa_id, q->queue);
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 	if (err < 0 && tmr->alsa_id.dev_class != SNDRV_TIMER_CLASS_SLAVE) {
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 		if (tmr->alsa_id.dev_class != SNDRV_TIMER_CLASS_GLOBAL ||
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 		    tmr->alsa_id.device != SNDRV_TIMER_GLOBAL_SYSTEM) {
..
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@@ -297,19 +288,25 @@
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 			tid.dev_sclass = SNDRV_TIMER_SCLASS_SEQUENCER;
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 			tid.card = -1;
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 			tid.device = SNDRV_TIMER_GLOBAL_SYSTEM;
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-			err = snd_timer_open(&t, str, &tid, q->queue);
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+			err = snd_timer_open(t, &tid, q->queue);
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 		}
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 	}
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 	if (err < 0) {
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 		pr_err("ALSA: seq fatal error: cannot create timer (%i)\n", err);
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+		snd_timer_instance_free(t);
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 		return err;
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 	}
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-	t->callback = snd_seq_timer_interrupt;
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-	t->callback_data = q;
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-	t->flags |= SNDRV_TIMER_IFLG_AUTO;
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 	spin_lock_irq(&tmr->lock);
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-	tmr->timeri = t;
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+	if (tmr->timeri)
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+		err = -EBUSY;
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+	else
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+		tmr->timeri = t;
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 	spin_unlock_irq(&tmr->lock);
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+	if (err < 0) {
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+		snd_timer_close(t);
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+		snd_timer_instance_free(t);
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+		return err;
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+	}
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 	return 0;
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 }
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..
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@@ -325,8 +322,10 @@
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 	t = tmr->timeri;
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 	tmr->timeri = NULL;
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 	spin_unlock_irq(&tmr->lock);
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-	if (t)
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+	if (t) {
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 		snd_timer_close(t);
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+		snd_timer_instance_free(t);
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+	}
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 	return 0;
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 }
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