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| author | Brent Lu <brent.lu@intel.com> | 2020-07-15 21:01:50 +0800 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2020-10-02 21:05:27 +0100 |
| commit | cec6e41ce094affad3b5f9f5e5aa1f81c66ce682 (patch) | |
| tree | 2bea885e21d06eee0ca4c2376d44723d2b48fe80 /sound/soc | |
| parent | 1a4c450e57d2d7030f64379e3e80966a4ea71eb7 (diff) | |
| download | linux-cec6e41ce094affad3b5f9f5e5aa1f81c66ce682.tar.bz2 | |
ASoC: hdac_hdmi: remove cancel_work_sync in runtime suspend
A deadlock is identified when there are three contexts running at the
same time:
- a HDMI jack work which is calling snd_soc_dapm_sync().
- user space is calling snd_pcm_release() to close pcm device.
- pm is calling runtime suspend function of HDMI codec driver.
By removing the clear_dapm_works() invocation in the
hdac_hdmi_runtime_suspend() function, the snd_pcm_release() could
always returns from dapm_power_widgets() function call without
blocking the hdac_hdmi_jack_dapm_work() work thread or being blocked
by the hdac_hdmi_runtime_suspend() function. The purpose of the jack
work is to enable/disable the dapm jack pin so it's not necessary to
cancel the work in runtime suspend function which is usually called
when pcm device is closed.
Signed-off-by: Brent Lu <brent.lu@intel.com>
Link: https://lore.kernel.org/r/1594818110-786-1-git-send-email-brent.lu@intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'sound/soc')
| -rw-r--r-- | sound/soc/codecs/hdac_hdmi.c | 2 |
1 files changed, 0 insertions, 2 deletions
diff --git a/sound/soc/codecs/hdac_hdmi.c b/sound/soc/codecs/hdac_hdmi.c index c61cce53f513..2c1305bf0572 100644 --- a/sound/soc/codecs/hdac_hdmi.c +++ b/sound/soc/codecs/hdac_hdmi.c @@ -2235,8 +2235,6 @@ static int hdac_hdmi_runtime_suspend(struct device *dev) if (!bus) return 0; - clear_dapm_works(hdev); - /* * Power down afg. * codec_read is preferred over codec_write to set the power state. |