[SCSI] pm80xx: Fix for direct attached device.

In case of direct attached SATA device delay is not enough.
It will give crash for set device state command response and
wait_for_completion is the best solution for this.

Signed-off-by: Nikith.Ganigarakoppal@pmcs.com
Signed-off-by: Anandkumar.Santhanam@pmcs.com
Reviewed-by: Jack Wang <jinpu.wang@profitbricks.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>

diff --git a/drivers/scsi/pm8001/pm8001_sas.c b/drivers/scsi/pm8001/pm8001_sas.c
index f4eb18e..f50ac44 100644 (file)
--- a/drivers/scsi/pm8001/pm8001_sas.c
+++ b/drivers/scsi/pm8001/pm8001_sas.c
@@ -1098,15 +1098,17 @@ int pm8001_lu_reset(struct domain_device *dev, u8 *lun)
        struct pm8001_tmf_task tmf_task;
        struct pm8001_device *pm8001_dev = dev->lldd_dev;
        struct pm8001_hba_info *pm8001_ha = pm8001_find_ha_by_dev(dev);
+       DECLARE_COMPLETION_ONSTACK(completion_setstate);
        if (dev_is_sata(dev)) {
                struct sas_phy *phy = sas_get_local_phy(dev);
                rc = pm8001_exec_internal_task_abort(pm8001_ha, pm8001_dev ,
                        dev, 1, 0);
                rc = sas_phy_reset(phy, 1);
                sas_put_local_phy(phy);
+               pm8001_dev->setds_completion = &completion_setstate;
                rc = PM8001_CHIP_DISP->set_dev_state_req(pm8001_ha,
                        pm8001_dev, 0x01);
-               msleep(2000);
+               wait_for_completion(&completion_setstate);
        } else {
                tmf_task.tmf = TMF_LU_RESET;
                rc = pm8001_issue_ssp_tmf(dev, lun, &tmf_task);