ASoC: samsung: i2s: Fixup last IRQ unsafe spin lock call
authorCharles Keepax <ckeepax@opensource.wolfsonmicro.com>
Fri, 21 Oct 2016 13:18:48 +0000 (14:18 +0100)
committerMark Brown <broonie@kernel.org>
Mon, 24 Oct 2016 18:00:01 +0000 (19:00 +0100)
commit5faf071d08ddd1c1be66deaa93a09ccf43f5b538
treec87ff0c41b7990cd45e2e8b881181ce7ed21f52f
parent1001354ca34179f3db924eb66672442a173147dc
ASoC: samsung: i2s: Fixup last IRQ unsafe spin lock call

Unfortunately, I seem to have missed a case where an IRQ safe spinlock was
required, in samsung_i2s_dai_remove, when I fixed up the other calls in
this patch:

316fa9e09ad7 ("ASoC: samsung: Use IRQ safe spin lock calls")

This causes a lockdep warning when unbinding and rebinding the audio card:

[  104.357664]        CPU0                    CPU1
[  104.362174]        ----                    ----
[  104.366692]   lock(&(&pri_dai->spinlock)->rlock);
[  104.371372]                                local_irq_disable();
[  104.377283]                                lock(&(&substream->self_group.lock)->rlock);
[  104.385259]                                lock(&(&pri_dai->spinlock)->rlock);
[  104.392469]   <Interrupt>
[  104.395072]     lock(&(&substream->self_group.lock)->rlock);
[  104.400710]
[  104.400710]  *** DEADLOCK ***

Fixes: ce8bcdbb61d9 ("ASoC: samsung: i2s: Protect more registers with a spinlock")
Signed-off-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
Reviewed-by: Krzysztof Kozlowski <krzk@kernel.org>
Reviewed-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
sound/soc/samsung/i2s.c