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2024-05-10 37f49e37ab4cb5d0bc4c60eb5c6d4dd57db767bb

 kernel/sound/core/seq/seq_fifo.c
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@@ -1,22 +1,7 @@
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+// SPDX-License-Identifier: GPL-2.0-or-later
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 /*
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  *   ALSA sequencer FIFO
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  *   Copyright (c) 1998 by Frank van de Pol <fvdpol@coil.demon.nl>
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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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@@ -98,18 +83,17 @@
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 void snd_seq_fifo_clear(struct snd_seq_fifo *f)
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 {
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 	struct snd_seq_event_cell *cell;
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-	unsigned long flags;
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 	/* clear overflow flag */
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 	atomic_set(&f->overflow, 0);
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 	snd_use_lock_sync(&f->use_lock);
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-	spin_lock_irqsave(&f->lock, flags);
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+	spin_lock_irq(&f->lock);
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 	/* drain the fifo */
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 	while ((cell = fifo_cell_out(f)) != NULL) {
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 		snd_seq_cell_free(cell);
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 	}
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-	spin_unlock_irqrestore(&f->lock, flags);
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+	spin_unlock_irq(&f->lock);
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 }
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@@ -195,9 +179,9 @@
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 		}
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 		set_current_state(TASK_INTERRUPTIBLE);
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 		add_wait_queue(&f->input_sleep, &wait);
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-		spin_unlock_irq(&f->lock);
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+		spin_unlock_irqrestore(&f->lock, flags);
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 		schedule();
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-		spin_lock_irq(&f->lock);
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+		spin_lock_irqsave(&f->lock, flags);
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 		remove_wait_queue(&f->input_sleep, &wait);
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 		if (signal_pending(current)) {
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 			spin_unlock_irqrestore(&f->lock, flags);
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@@ -239,7 +223,6 @@
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 /* change the size of pool; all old events are removed */
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 int snd_seq_fifo_resize(struct snd_seq_fifo *f, int poolsize)
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 {
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-	unsigned long flags;
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 	struct snd_seq_pool *newpool, *oldpool;
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 	struct snd_seq_event_cell *cell, *next, *oldhead;
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@@ -255,7 +238,7 @@
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 		return -ENOMEM;
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 	}
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-	spin_lock_irqsave(&f->lock, flags);
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+	spin_lock_irq(&f->lock);
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 	/* remember old pool */
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 	oldpool = f->pool;
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 	oldhead = f->head;
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@@ -265,7 +248,7 @@
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 	f->tail = NULL;
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 	f->cells = 0;
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 	/* NOTE: overflow flag is not cleared */
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-	spin_unlock_irqrestore(&f->lock, flags);
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+	spin_unlock_irq(&f->lock);
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 	/* close the old pool and wait until all users are gone */
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 	snd_seq_pool_mark_closing(oldpool);