[SCSI] qla2xxx: Properly handle Vport state-change-notifications.

Drivers do SCRs for each Vport. When something changes in the
fabric, firmware generates one interrupt for each RSCN. Based on
the current implementation, in each case, we make recursive calls
to handle RSCN for physical and each subsequent virtual ports.
The fix is to also take into consideration the vp_idx, which is
set by the firmware to indicate the vport the RSCN was meant for.

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

diff --git a/drivers/scsi/qla2xxx/qla_isr.c b/drivers/scsi/qla2xxx/qla_isr.c
index 343af399c95cc7a9452848a99e9e73125a787306..798b7e87e2e14e6105afc921eead81d9c419a386 100644 (file)
--- a/drivers/scsi/qla2xxx/qla_isr.c
+++ b/drivers/scsi/qla2xxx/qla_isr.c
@@ -575,12 +575,15 @@ qla2x00_async_event(scsi_qla_host_t *ha, uint16_t *mb)
                /* Check if the Vport has issued a SCR */
                if (ha->parent && test_bit(VP_SCR_NEEDED, &ha->vp_flags))
                        break;
+               /* Only handle SCNs for our Vport index. */
+               if (ha->flags.npiv_supported && ha->vp_idx != mb[3])
+                       break;
 
                DEBUG2(printk("scsi(%ld): Asynchronous RSCR UPDATE.\n",
                    ha->host_no));
                DEBUG(printk(KERN_INFO
-                   "scsi(%ld): RSCN database changed -- %04x %04x.\n",
-                   ha->host_no, mb[1], mb[2]));
+                   "scsi(%ld): RSCN database changed -- %04x %04x %04x.\n",
+                   ha->host_no, mb[1], mb[2], mb[3]));
 
                rscn_entry = (mb[1] << 16) | mb[2];
                host_pid = (ha->d_id.b.domain << 16) | (ha->d_id.b.area << 8) |