scsi: hisi_sas: workaround SoC about abort timeout bug

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This patch adds a workaround solution for a SoC bug which may cause SoC
logic fatal error when disabling a PHY.  Then we find internal abort IO
timeout may occur, and the controller IO breakpoint may be corrupted.

We work around this SoC bug by optimizing the flow of disabling a PHY.

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 2017-04-10 21:21:58 +08:00 • committed by Martin K. Petersen

parent 32ccba52f1

commit 819cbf1895

1 changed files with 126 additions and 1 deletions

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drivers/scsi/hisi_sas/hisi_sas_v2_hw.c

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