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[SCSI] mvsas: bug fix, null pointer may be used 

Null pointer check to avoid corruption.

Signed-off-by: Ying Chu <jasonchu@marvell.com>
Signed-off-by: Andy Yan <ayan@marvell.com>
Signed-off-by: Ke Wei <kewei@marvell.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
This commit is contained in:
Andy Yan 2009-05-11 21:49:52 +08:00 committed by James Bottomley
parent 0b84b7094e
commit 0f980a8716
1 changed files with 4 additions and 4 deletions
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8
drivers/scsi/mvsas/mv_sas.c
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@ -1873,11 +1873,11 @@ int mvs_slot_complete(struct mvs_info *mvi, u32 rx_desc, u32 flags)
} }
out: out:
if (mvi_dev) if (mvi_dev) {
mvi_dev->runing_req--; mvi_dev->runing_req--;
if (sas_protocol_ata(task->task_proto)) if (sas_protocol_ata(task->task_proto))
mvs_free_reg_set(mvi, mvi_dev); mvs_free_reg_set(mvi, mvi_dev);
}
mvs_slot_task_free(mvi, task, slot, slot_idx); mvs_slot_task_free(mvi, task, slot, slot_idx);
sts = tstat->stat; sts = tstat->stat;