[SCSI] qla2xxx: Don't explicitly read mbx registers while processing a system-error.

Callers of qla2x00_async_event() already populate the mb[] array
upon invocation, doing so via the appropriate mailbox register
accessors.  The stale codes removed are leftover-bits kept during
the FWI2 transition.  Though relatively benign, the extra-reads
are not valid for FWI2 boards (ISP24xx and above) and peek into
the incorrect regions of registers.

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

1 files changed, 0 insertions, 4 deletions

diff --git a/drivers/scsi/qla2xxx/qla_isr.c b/drivers/scsi/qla2xxx/qla_isr.c
index 1104bd2eed40..343af399c95c 100644
--- a/drivers/scsi/qla2xxx/qla_isr.c
+++ b/drivers/scsi/qla2xxx/qla_isr.c
@@ -347,10 +347,6 @@ qla2x00_async_event(scsi_qla_host_t *ha, uint16_t *mb)
                 break;
 
         case MBA_SYSTEM_ERR:            /* System Error */
-                mb[1] = RD_MAILBOX_REG(ha, reg, 1);
-                mb[2] = RD_MAILBOX_REG(ha, reg, 2);
-                mb[3] = RD_MAILBOX_REG(ha, reg, 3);
-
                 qla_printk(KERN_INFO, ha,
                     "ISP System Error - mbx1=%xh mbx2=%xh mbx3=%xh.\n",
                     mb[1], mb[2], mb[3]);