ASoC: fsl_asrc: check the second front-end DMA channel

The temporary Front-End DMA request can fail independently of the
persistent channel acquired earlier in fsl_asrc_dma_hw_params(). The
returned NULL pointer is immediately used to read its private data.

Check the temporary channel and release the previously acquired
persistent Front-End channel on failure. Clear its slot so a later
hw_free cannot release it twice. ASoC marks a component's hw_params
only after success and skips unmarked components during rollback, so
returning an error alone would leak the earlier channel.

Detected by static analysis and reviewed with AI-assisted source auditing.

Fixes: 3117bb3109dc ("ASoC: fsl_asrc: Add ASRC ASoC CPU DAI and platform drivers")
Assisted-by: LLM
Signed-off-by: Slavin Liu <bolin.liu@seu.edu.cn>
Link: https://patch.msgid.link/20260913125147.109920-1-bolin.liu@seu.edu.cn
Signed-off-by: Mark Brown <broonie@kernel.org>

0 files changed, 0 insertions, 0 deletions