From: Simon Trimmer <[email protected]>
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 <[email protected]>
Signed-off-by: Richard Fitzgerald <[email protected]>
---
sound/soc/codecs/cs35l56.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/sound/soc/codecs/cs35l56.c b/sound/soc/codecs/cs35l56.c
index 46762f7f1449..d1677d76d018 100644
--- a/sound/soc/codecs/cs35l56.c
+++ b/sound/soc/codecs/cs35l56.c
@@ -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);
--
2.30.2
On Fri, 12 May 2023 15:42:37 +0100, Richard Fitzgerald wrote:
> 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.
>
>
> [...]
Applied to
https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git for-next
Thanks!
[1/1] ASoC: cs35l56: Prevent unbalanced pm_runtime in dsp_work() on SoundWire
commit: 17082e09b94cfe60bf39088f3d37c1f10e6c5928
All being well this means that it will be integrated into the linux-next
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Thanks,
Mark