[SCSI] qla2xxx: Correct vport configuration-change handling.

Upon having configuration changes on vports only, the driver
handles SCR regardless physical port state and, in turn, it
results mailbox error as below:

	Mar 20 11:24:20 dl585 kernel: qla2x00_mailbox_command(9): **** FAILED.  mbx0=4005, mbx1=1, mbx2=8100, cmd=70 ****

With the changes, driver checks physical port loop_state and make
sure the port is ready to take commands.

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

1 files changed, 9 insertions, 1 deletions

diff --git a/drivers/scsi/qla2xxx/qla_mid.c b/drivers/scsi/qla2xxx/qla_mid.c
index 9f48cd46f618..f2b04979e5f0 100644
--- a/drivers/scsi/qla2xxx/qla_mid.c
+++ b/drivers/scsi/qla2xxx/qla_mid.c
@@ -254,9 +254,17 @@ qla2x00_vp_abort_isp(scsi_qla_host_t *vha)
 static int
 qla2x00_do_dpc_vp(scsi_qla_host_t *vha)
 {
+        scsi_qla_host_t *ha = vha->parent;
+
         if (test_and_clear_bit(VP_IDX_ACQUIRED, &vha->vp_flags)) {
                 /* VP acquired. complete port configuration */
-                qla24xx_configure_vp(vha);
+                if (atomic_read(&ha->loop_state) == LOOP_READY) {
+                        qla24xx_configure_vp(vha);
+                } else {
+                        set_bit(VP_IDX_ACQUIRED, &vha->vp_flags);
+                        set_bit(VP_DPC_NEEDED, &ha->dpc_flags);
+                }
+
                 return 0;
         }