add new system file

hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/sound/synth/emux/emux.c
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@@ -1,21 +1,8 @@
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+// SPDX-License-Identifier: GPL-2.0-or-later
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 /*
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  *  Copyright (C) 2000 Takashi Iwai <tiwai@suse.de>
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  *
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  *  Routines for control of EMU WaveTable chip
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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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 #include <linux/wait.h>
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@@ -138,15 +125,10 @@
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  */
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 int snd_emux_free(struct snd_emux *emu)
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 {
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-	unsigned long flags;
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-
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 	if (! emu)
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 		return -EINVAL;
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-	spin_lock_irqsave(&emu->voice_lock, flags);
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-	if (emu->timer_active)
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-		del_timer(&emu->tlist);
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-	spin_unlock_irqrestore(&emu->voice_lock, flags);
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+	del_timer_sync(&emu->tlist);
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 	snd_emux_proc_free(emu);
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 	snd_emux_delete_virmidi(emu);