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linux/sound/soc/cirrus
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Alexander Sverdlin 66dc3b9b9a
ASoC: ep93xx: ignore 0 Hz sysclk 
Commit 2458adb8f9
("SoC: simple-card-utils: set 0Hz to sysclk when shutdown")
added a call to snd_soc_dai_set_sysclk() with 0 Hz frequency. Being
propagated further it causes a division by zero in clk-ep93xx driver:

Division by zero in kernel.
CPU: 0 PID: 52 Comm: aplay Tainted: G        W          6.2.0-rc4-... #1
Hardware name: Generic DT based system
 unwind_backtrace from show_stack+0x10/0x18
 show_stack from dump_stack_lvl+0x28/0x34
 dump_stack_lvl from __div0+0x10/0x1c
 __div0 from Ldiv0+0x8/0x1c
 Ldiv0 from ep93xx_mux_determine_rate+0x78/0x1d0
 ep93xx_mux_determine_rate from clk_core_round_rate_nolock+0x48/0xc8
 clk_core_round_rate_nolock from clk_core_set_rate_nolock+0x48/0x160
 clk_core_set_rate_nolock from clk_set_rate+0x30/0x8c
 clk_set_rate from ep93xx_i2s_set_sysclk+0x30/0x6c
 ep93xx_i2s_set_sysclk from snd_soc_dai_set_sysclk+0x3c/0xa4
 snd_soc_dai_set_sysclk from asoc_simple_shutdown+0xb8/0x164
 asoc_simple_shutdown from snd_soc_link_shutdown+0x44/0x54
 snd_soc_link_shutdown from soc_pcm_clean+0x78/0x180
 soc_pcm_clean from soc_pcm_close+0x28/0x40
 soc_pcm_close from snd_pcm_release_substream.part.0+0x3c/0x84
 snd_pcm_release_substream.part.0 from snd_pcm_release+0x40/0x88
 snd_pcm_release from __fput+0x74/0x278

There has been commit f1879d7b98 ("ASoC: rockchip: ignore 0Hz sysclk"),
but it prepared by far not all drivers.

Signed-off-by: Alexander Sverdlin <alexander.sverdlin@gmail.com>
Link: https://lore.kernel.org/r/20230212220923.258414-1-alexander.sverdlin@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2023-02-13 12:44:53 +00:00
..
edb93xx.c ASoC: ep93xx: Convert to modern clocking terminology 2021-09-27 13:00:54 +01:00
ep93xx-ac97.c ASoC: cirrus: use helper function 2023-01-31 11:04:58 +00:00
ep93xx-i2s.c ASoC: ep93xx: ignore 0 Hz sysclk 2023-02-13 12:44:53 +00:00
ep93xx-pcm.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
ep93xx-pcm.h
Kconfig sound: Fix Kconfig indentation 2019-10-07 03:53:03 +02:00
Makefile
simone.c Linux 5.2-rc6 2019-06-26 12:39:34 +01:00
snappercl15.c ASoC: ep93xx: Convert to modern clocking terminology 2021-09-27 13:00:54 +01:00