diff options
| author | Charles Keepax <ckeepax@opensource.wolfsonmicro.com> | 2016-02-19 17:44:41 +0300 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2016-02-20 21:08:19 +0300 |
| commit | c7dae7c4c60693286298e300b3d140c8cff46daa (patch) | |
| tree | 276a4911fa5106e5ebdb9f0916b5a7db6cc6032d /sound/soc/codecs/wm_adsp.c | |
| parent | da2b33589013b4cb3dad163f50fae060896cb8b6 (diff) | |
| download | linux-c7dae7c4c60693286298e300b3d140c8cff46daa.tar.xz | |
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>
Diffstat (limited to 'sound/soc/codecs/wm_adsp.c')
| -rw-r--r-- | sound/soc/codecs/wm_adsp.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/sound/soc/codecs/wm_adsp.c b/sound/soc/codecs/wm_adsp.c index 68b85ee67586..cb49a632462a 100644 --- a/sound/soc/codecs/wm_adsp.c +++ b/sound/soc/codecs/wm_adsp.c @@ -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: |