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2023-12-08 01573e231f18eb2d99162747186f59511f56b64d

 kernel/sound/core/seq/oss/seq_oss_midi.c
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@@ -1,23 +1,10 @@
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+// SPDX-License-Identifier: GPL-2.0-or-later
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 /*
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  * OSS compatible sequencer driver
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  *
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  * MIDI device handlers
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  *
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  * Copyright (C) 1998,99 Takashi Iwai <tiwai@suse.de>
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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 <sound/asoundef.h>
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@@ -280,7 +267,9 @@
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 void
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 snd_seq_oss_midi_setup(struct seq_oss_devinfo *dp)
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 {
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+	spin_lock_irq(&register_lock);
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 	dp->max_mididev = max_midi_devs;
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+	spin_unlock_irq(&register_lock);
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 }
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 /*