[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>

1 files changed, 5 insertions, 2 deletions

diff --git a/drivers/scsi/qla2xxx/qla_isr.c b/drivers/scsi/qla2xxx/qla_isr.c
index 343af399c95c..798b7e87e2e1 100644
--- 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) |