[SCSI] qla2xxx: Correct usage of inconsistent timeout values while issuing ELS commands.

The original code would incorrectly hardcode ELS timeout values
rather than using the traditional '2 * r_a_tov' value.  In some
cases, the hardcoded values would be larger than the
mailbox-command-timeout and result in a needless BIG_HAMMER (ISP
reset), the typical recovery mechanism employed in such cases.

The second defect in the original code was in the assignment of
the default 'ha->r_a_tov' to twice the traditional value.
Correct this by setting the value to 10 seconds.

Signed-off-by: Andrew Vasquez <andrew.vasquez@qlogic.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>

1 files changed, 5 insertions, 5 deletions

diff --git a/drivers/scsi/qla2xxx/qla_gs.c b/drivers/scsi/qla2xxx/qla_gs.c
index 6226d88479f5..c1808763d40e 100644
--- a/drivers/scsi/qla2xxx/qla_gs.c
+++ b/drivers/scsi/qla2xxx/qla_gs.c
@@ -39,7 +39,7 @@ qla2x00_prep_ms_iocb(scsi_qla_host_t *ha, uint32_t req_size, uint32_t rsp_size)
         ms_pkt->entry_count = 1;
         SET_TARGET_ID(ha, ms_pkt->loop_id, SIMPLE_NAME_SERVER);
         ms_pkt->control_flags = __constant_cpu_to_le16(CF_READ | CF_HEAD_TAG);
-        ms_pkt->timeout = __constant_cpu_to_le16(25);
+        ms_pkt->timeout = cpu_to_le16(ha->r_a_tov / 10 * 2);
         ms_pkt->cmd_dsd_count = __constant_cpu_to_le16(1);
         ms_pkt->total_dsd_count = __constant_cpu_to_le16(2);
         ms_pkt->rsp_bytecount = cpu_to_le32(rsp_size);
@@ -75,7 +75,7 @@ qla24xx_prep_ms_iocb(scsi_qla_host_t *ha, uint32_t req_size, uint32_t rsp_size)
         ct_pkt->entry_type = CT_IOCB_TYPE;
         ct_pkt->entry_count = 1;
         ct_pkt->nport_handle = __constant_cpu_to_le16(NPH_SNS);
-        ct_pkt->timeout = __constant_cpu_to_le16(25);
+        ct_pkt->timeout = cpu_to_le16(ha->r_a_tov / 10 * 2);
         ct_pkt->cmd_dsd_count = __constant_cpu_to_le16(1);
         ct_pkt->rsp_dsd_count = __constant_cpu_to_le16(1);
         ct_pkt->rsp_byte_count = cpu_to_le32(rsp_size);
@@ -1144,7 +1144,7 @@ qla2x00_prep_ms_fdmi_iocb(scsi_qla_host_t *ha, uint32_t req_size,
         ms_pkt->entry_count = 1;
         SET_TARGET_ID(ha, ms_pkt->loop_id, ha->mgmt_svr_loop_id);
         ms_pkt->control_flags = __constant_cpu_to_le16(CF_READ | CF_HEAD_TAG);
-        ms_pkt->timeout = __constant_cpu_to_le16(59);
+        ms_pkt->timeout = cpu_to_le16(ha->r_a_tov / 10 * 2);
         ms_pkt->cmd_dsd_count = __constant_cpu_to_le16(1);
         ms_pkt->total_dsd_count = __constant_cpu_to_le16(2);
         ms_pkt->rsp_bytecount = cpu_to_le32(rsp_size);
@@ -1181,7 +1181,7 @@ qla24xx_prep_ms_fdmi_iocb(scsi_qla_host_t *ha, uint32_t req_size,
         ct_pkt->entry_type = CT_IOCB_TYPE;
         ct_pkt->entry_count = 1;
         ct_pkt->nport_handle = cpu_to_le16(ha->mgmt_svr_loop_id);
-        ct_pkt->timeout = __constant_cpu_to_le16(59);
+        ct_pkt->timeout = cpu_to_le16(ha->r_a_tov / 10 * 2);
         ct_pkt->cmd_dsd_count = __constant_cpu_to_le16(1);
         ct_pkt->rsp_dsd_count = __constant_cpu_to_le16(1);
         ct_pkt->rsp_byte_count = cpu_to_le32(rsp_size);
@@ -1761,7 +1761,7 @@ qla24xx_prep_ms_fm_iocb(scsi_qla_host_t *ha, uint32_t req_size,
         ct_pkt->entry_type = CT_IOCB_TYPE;
         ct_pkt->entry_count = 1;
         ct_pkt->nport_handle = cpu_to_le16(ha->mgmt_svr_loop_id);
-        ct_pkt->timeout = __constant_cpu_to_le16(59);
+        ct_pkt->timeout = cpu_to_le16(ha->r_a_tov / 10 * 2);
         ct_pkt->cmd_dsd_count = __constant_cpu_to_le16(1);
         ct_pkt->rsp_dsd_count = __constant_cpu_to_le16(1);
         ct_pkt->rsp_byte_count = cpu_to_le32(rsp_size);