diff options
| author | Santosh Vernekar <santosh.vernekar@qlogic.com> | 2013-08-27 01:37:48 -0400 |
|---|---|---|
| committer | James Bottomley <JBottomley@Parallels.com> | 2013-09-03 07:28:06 -0700 |
| commit | 454073c905ba8f9f4c691146aaa3219b6ed593d5 (patch) | |
| tree | 76d394deabd1f2cb69ae5af51046c293bc14da1b /drivers/scsi/qla2xxx/qla_bsg.c | |
| parent | f875cd4cc4cd2cf74af9cbb63624ee4b40dab0a1 (diff) | |
[SCSI] qla2xxx: Add loopback IDC-TIME-EXTEND aen handling support.
Earlier IDC-TIME-EXTEND aen was a nop and ignored by driver.
We now have to handle the aen so that other protocol drivers can use time
extension during some loopback operations.
Signed-off-by: Santosh Vernekar <santosh.vernekar@qlogic.com>
Signed-off-by: Saurav Kashyap <saurav.kashyap@qlogic.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Diffstat (limited to 'drivers/scsi/qla2xxx/qla_bsg.c')
| -rw-r--r-- | drivers/scsi/qla2xxx/qla_bsg.c | 17 |
1 files changed, 15 insertions, 2 deletions
diff --git a/drivers/scsi/qla2xxx/qla_bsg.c b/drivers/scsi/qla2xxx/qla_bsg.c index fb5bd6e17e8..b989add77ec 100644 --- a/drivers/scsi/qla2xxx/qla_bsg.c +++ b/drivers/scsi/qla2xxx/qla_bsg.c @@ -627,6 +627,7 @@ qla81xx_set_loopback_mode(scsi_qla_host_t *vha, uint16_t *config, { int ret = 0; int rval = 0; + unsigned long rem_tmo = 0, current_tmo = 0; struct qla_hw_data *ha = vha->hw; if (!IS_QLA81XX(ha) && !IS_QLA8031(ha) && !IS_QLA8044(ha)) @@ -652,8 +653,19 @@ qla81xx_set_loopback_mode(scsi_qla_host_t *vha, uint16_t *config, } /* Wait for DCBX complete event */ - if (!wait_for_completion_timeout(&ha->dcbx_comp, - (DCBX_COMP_TIMEOUT * HZ))) { + current_tmo = DCBX_COMP_TIMEOUT * HZ; + while (1) { + rem_tmo = wait_for_completion_timeout(&ha->dcbx_comp, + current_tmo); + if (!ha->idc_extend_tmo || rem_tmo) { + ha->idc_extend_tmo = 0; + break; + } + current_tmo = ha->idc_extend_tmo * HZ; + ha->idc_extend_tmo = 0; + } + + if (!rem_tmo) { ql_dbg(ql_dbg_user, vha, 0x7022, "DCBX completion not received.\n"); ret = qla81xx_reset_loopback_mode(vha, new_config, 0, 0); @@ -678,6 +690,7 @@ qla81xx_set_loopback_mode(scsi_qla_host_t *vha, uint16_t *config, } ha->notify_dcbx_comp = 0; + ha->idc_extend_tmo = 0; done_set_internal: return rval; |