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authorAnil Gurumurthy <anil.gurumurthy@cavium.com>2018-06-06 08:41:42 -0700
committerMartin K. Petersen <martin.petersen@oracle.com>2018-06-07 21:50:00 -0400
commit3cedc8797b9c0f2222fd45a01f849c57c088828b (patch)
tree20ff6df60fd29dc7551248f0759536cfff5fd37c /drivers/scsi
parent3cb182b3fa8b7a61f05c671525494697cba39c6a (diff)
scsi: qla2xxx: Mask off Scope bits in retry delay
Some newer target uses "Status Qualifier" response in a returned "Busy Status". This new response code of 0x4001, which is "Scope" bits, translates to "Affects all units accessible by target". Due to this new value returned in the Scope bits, driver was using that value as timeout value which resulted into driver waiting for 27min timeout. This patch masks off this Scope bits so that driver does not use this value as retry delay time. Cc: <stable@vger.kernel.org> Signed-off-by: Anil Gurumurthy <anil.gurumurthy@cavium.com> Signed-off-by: Giridhar Malavali <giridhar.malavali@cavium.com> Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com> Reviewed-by: Ewan D. Milne <emilne@redhat.com> Reviewed-by: Martin Wilck <mwilck@suse.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/scsi')
-rw-r--r--drivers/scsi/qla2xxx/qla_isr.c8
1 files changed, 6 insertions, 2 deletions
diff --git a/drivers/scsi/qla2xxx/qla_isr.c b/drivers/scsi/qla2xxx/qla_isr.c
index a3dc83f9444d..68560a097ae1 100644
--- a/drivers/scsi/qla2xxx/qla_isr.c
+++ b/drivers/scsi/qla2xxx/qla_isr.c
@@ -2494,8 +2494,12 @@ qla2x00_status_entry(scsi_qla_host_t *vha, struct rsp_que *rsp, void *pkt)
ox_id = le16_to_cpu(sts24->ox_id);
par_sense_len = sizeof(sts24->data);
/* Valid values of the retry delay timer are 0x1-0xffef */
- if (sts24->retry_delay > 0 && sts24->retry_delay < 0xfff1)
- retry_delay = sts24->retry_delay;
+ if (sts24->retry_delay > 0 && sts24->retry_delay < 0xfff1) {
+ retry_delay = sts24->retry_delay & 0x3fff;
+ ql_dbg(ql_dbg_io, sp->vha, 0x3033,
+ "%s: scope=%#x retry_delay=%#x\n", __func__,
+ sts24->retry_delay >> 14, retry_delay);
+ }
} else {
if (scsi_status & SS_SENSE_LEN_VALID)
sense_len = le16_to_cpu(sts->req_sense_length);