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ASoC: cs35l56: Prevent unbalanced pm_runtime in dsp_work() on SoundWire

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Flush the SoundWire interrupt handler work instead of cancelling it.

When a SoundWire interrupt is triggered the pm_runtime is held
until the work has completed. It's therefore unsafe to cancel
the work, it must be flushed.

Signed-off-by: Simon Trimmer <simont@opensource.cirrus.com
Signed-off-by: Richard Fitzgerald <rf@opensource.cirrus.com
Link: https://lore.kernel.org/r/20230512144237.739000-1-rf@opensource.cirrus.com
Signed-off-by: Mark Brown <broonie@kernel.org
This commit is contained in:
Simon Trimmer 2023-05-12 15:42:37 +01:00 committed by Mark Brown
parent 41c5305cc3
commit 17082e09b9
No known key found for this signature in database
GPG Key ID: 24D68B725D5487D0
1 changed files with 2 additions and 1 deletions
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3
sound/soc/codecs/cs35l56.c
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@ -852,10 +852,11 @@ static void cs35l56_dsp_work(struct work_struct *work)
*/
if (cs35l56->sdw_peripheral) {
cs35l56->sdw_irq_no_unmask = true;
cancel_work_sync(&cs35l56->sdw_irq_work);
flush_work(&cs35l56->sdw_irq_work);
sdw_write_no_pm(cs35l56->sdw_peripheral, CS35L56_SDW_GEN_INT_MASK_1, 0);
sdw_read_no_pm(cs35l56->sdw_peripheral, CS35L56_SDW_GEN_INT_STAT_1);
sdw_write_no_pm(cs35l56->sdw_peripheral, CS35L56_SDW_GEN_INT_STAT_1, 0xFF);
flush_work(&cs35l56->sdw_irq_work);
}
ret = cs35l56_mbox_send(cs35l56, CS35L56_MBOX_CMD_SHUTDOWN);