修改led为gpio

hc

2024-10-12 a5969cabbb4660eab42b6ef0412cbbd1200cf14d

 kernel/sound/core/sound.c
..
..
@@ -1,22 +1,7 @@
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+// SPDX-License-Identifier: GPL-2.0-or-later
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 /*
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  *  Advanced Linux Sound Architecture
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  *  Copyright (c) by 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 <linux/init.h>
..
..
@@ -134,8 +119,11 @@
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 	if (dev == SNDRV_MINOR_CONTROL) {
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 		/* /dev/aloadC? */
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 		int card = SNDRV_MINOR_CARD(minor);
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-		if (snd_cards[card] == NULL)
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+		struct snd_card *ref = snd_card_ref(card);
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+		if (!ref)
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 			snd_request_card(card);
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+		else
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+			snd_card_unref(ref);
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 	} else if (dev == SNDRV_MINOR_GLOBAL) {
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 		/* /dev/aloadSEQ */
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 		snd_request_other(minor);