Dinghao Liu 0ed0283f02 sata_dwc_460ex: Fix missing check in sata_dwc_isr
The return value of ata_qc_from_tag() is checked in the whole
kernel except for two calls in sata_dwc_isr(), which may lead
to null-pointer-dereference. Add return value checks to avoid
such case.

Signed-off-by: Dinghao Liu <dinghao.liu@zju.edu.cn>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2021-03-12 07:28:29 -07:00
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