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Shengjiu Wang
77e3308b29a
Shengjiu Wang committed dbdd9591a63
MLK-9760: ASoC: fsl_esai: fix NULL pointer issue in reset handler

When test with case arecord -Dhw:0,1 | aplay -Dhw:0,0, xrun happened,
the reset handler will be called, but for BE(backend) stream, the
substream->ops is null.
This patch is to fix this null pointer issue.

Signed-off-by: Shengjiu Wang <shengjiu.wang@freescale.com>
(cherry picked from commit 4db112a8cd3caf5a553afea88cf7fe8d9781f459)
(cherry picked from commit cf060b0f735d0fadadda2dc03d0b38e96ca7ffe2)