add dts config

hc

2023-12-06 08f87f769b595151be1afeff53e144f543faa614

 kernel/sound/isa/gus/gus_uart.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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  *  Copyright (c) by Jaroslav Kysela <perex@perex.cz>
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  *  Routines for the GF1 MIDI interface - like UART 6850
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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/delay.h>
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@@ -28,7 +13,8 @@
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 static void snd_gf1_interrupt_midi_in(struct snd_gus_card * gus)
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 {
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 	int count;
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-	unsigned char stat, data, byte;
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+	unsigned char stat, byte;
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+	__always_unused unsigned char data;
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 	unsigned long flags;
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 	count = 10;