Commit c7dae7c4 authored Feb 19, 2016 by Charles Keepax Committed by Mark Brown Feb 21, 2016

ASoC: wm_adsp: Avoid narrow race condition on compr pointer



There is a very small window between then wm_adsp_compr_free gets call
and when the DSP is actually powered down. If we get an IRQ from the DSP
in this window then the wm_adsp_compr pointer will be NULL. This patch
adds a check for this into the IRQ handler to avoid any issues when this
happens.

Signed-off-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

parent da2b3358

sound/soc/codecs/wm_adsp.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -2845,7 +2845,7 @@ int wm_adsp_compr_handle_irq(struct wm_adsp *dsp)
		goto out;
		}

		if (compr->stream)
		if (compr && compr->stream)
		snd_compr_fragment_elapsed(compr->stream);

		out: