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13 June 2022, 11:31:42 UTC
Revision 98a226ed21949601b270f7ea20abc9f72f7b0be9 authored by Takashi Iwai on 10 June 2015, 08:27:00 UTC, committed by Takashi Iwai on 10 June 2015, 08:31:10 UTC 
ALSA: hda - Don't actually write registers for caps overwrites
 
Along with the transition to regmap for managing the cached parameter
reads, the caps overwrite was also moved to regmap cache.  The cache
change itself works, but it still tries to write the non-existing verb
(the HDA parameter is read-only) wrongly.  It's harmless in most
cases, but some chips are picky and may result in the codec
communication stall.

This patch avoids it just by adding the missing flag check in
reg_write ops.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
1 parent 132bd96
Raw File
Tip revision: 98a226ed21949601b270f7ea20abc9f72f7b0be9 authored by Takashi Iwai on 10 June 2015, 08:27:00 UTC
ALSA: hda - Don't actually write registers for caps overwrites
Tip revision: 98a226e
seccomp.h 
/*
 * include/asm-generic/seccomp.h
 *
 * Copyright (C) 2014 Linaro Limited
 * Author: AKASHI Takahiro <takahiro.akashi@linaro.org>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 */
#ifndef _ASM_GENERIC_SECCOMP_H
#define _ASM_GENERIC_SECCOMP_H

#include <linux/unistd.h>

#if defined(CONFIG_COMPAT) && !defined(__NR_seccomp_read_32)
#define __NR_seccomp_read_32		__NR_read
#define __NR_seccomp_write_32		__NR_write
#define __NR_seccomp_exit_32		__NR_exit
#ifndef __NR_seccomp_sigreturn_32
#define __NR_seccomp_sigreturn_32	__NR_rt_sigreturn
#endif
#endif /* CONFIG_COMPAT && ! already defined */

#define __NR_seccomp_read		__NR_read
#define __NR_seccomp_write		__NR_write
#define __NR_seccomp_exit		__NR_exit
#ifndef __NR_seccomp_sigreturn
#define __NR_seccomp_sigreturn		__NR_rt_sigreturn
#endif

#endif /* _ASM_GENERIC_SECCOMP_H */
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