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| author | Xiaofei Tan <tanxiaofei@huawei.com> | 2018-03-24 00:05:13 +0800 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2018-04-18 19:32:51 -0400 |
| commit | 327f242fa806c199a183c2197592e94d336c8266 (patch) | |
| tree | a13a113842286021dee72db6304b3ad895ad48bc /drivers/scsi/libsas/sas_ata.c | |
| parent | 3ff0f0b657eb414c1f8f1f22b91d52b892d8a850 (diff) | |
| download | talos-op-linux-327f242fa806c199a183c2197592e94d336c8266.tar.gz talos-op-linux-327f242fa806c199a183c2197592e94d336c8266.zip | |
scsi: hisi_sas: check IPTT is valid before using it for v3 hw
There is a bug of v3 hw development version. When AXI error happen, hw
may return an abnormal CQ that IPTT value is 0xffff. This will cause
IPTT out-of-bounds reference.
This patch adds a check of IPTT in cq_tasklet_v3_hw() and discards
invalid slot. This workaround scheme is just to enhance fault-tolerance
of the driver. So, we will apply this scheme for all version of v3 hw,
although release version has fixed this SoC bug.
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>
Diffstat (limited to 'drivers/scsi/libsas/sas_ata.c')
0 files changed, 0 insertions, 0 deletions
