scsi: hisi_sas: add check of device in hisi_sas_task_exec()

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Currently we don't check that device is not gone before dereferencing
its elements in the function hisi_sas_task_exec() (specifically, the DQ
pointer).

This patch fixes this issue by filling in the DQ pointer in
hisi_sas_task_prep() after we check that the device pointer is still
safe to reference.

[mkp: typo]

Signed-off-by: Xiaofei Tan <tanxiaofei@huawei.com>
Signed-off-by: John Garry <john.garry@huawei.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

...

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Xiaofei Tan 2018-05-09 23:10:50 +08:00 • committed by Martin K. Petersen

parent e85d93b212

commit 2f6bca202b

1 changed files with 13 additions and 10 deletions

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drivers/scsi/hisi_sas/hisi_sas_main.c

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