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Subject[024/107] [SCSI] qla2xxx: Correct inadvertent loop state transitions during port-update handling.
2.6.32-longterm review patch.  If anyone has any objections, please let us know.

------------------

From: Andrew Vasquez <andrew.vasquez@qlogic.com>

commit 58b48576966ed0afd3f63ef17480ec12748a7119 upstream.

Transitioning to a LOOP_UPDATE loop-state could cause the driver
to miss normal link/target processing. LOOP_UPDATE is a crufty
artifact leftover from at time the driver performed it's own
internal command-queuing. Safely remove this state.

Signed-off-by: Andrew Vasquez <andrew.vasquez@qlogic.com>
Signed-off-by: Chad Dupuis <chad.dupuis@qlogic.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>

---
drivers/scsi/qla2xxx/qla_init.c | 3 ---
drivers/scsi/qla2xxx/qla_isr.c | 1 -
2 files changed, 4 deletions(-)

--- a/drivers/scsi/qla2xxx/qla_init.c
+++ b/drivers/scsi/qla2xxx/qla_init.c
@@ -3459,15 +3459,12 @@ qla2x00_loop_resync(scsi_qla_host_t *vha
req = vha->req;
rsp = req->rsp;

- atomic_set(&vha->loop_state, LOOP_UPDATE);
clear_bit(ISP_ABORT_RETRY, &vha->dpc_flags);
if (vha->flags.online) {
if (!(rval = qla2x00_fw_ready(vha))) {
/* Wait at most MAX_TARGET RSCNs for a stable link. */
wait_time = 256;
do {
- atomic_set(&vha->loop_state, LOOP_UPDATE);
-
/* Issue a marker after FW becomes ready. */
qla2x00_marker(vha, req, rsp, 0, 0,
MK_SYNC_ALL);
--- a/drivers/scsi/qla2xxx/qla_isr.c
+++ b/drivers/scsi/qla2xxx/qla_isr.c
@@ -717,7 +717,6 @@ skip_rio:
vha->flags.rscn_queue_overflow = 1;
}

- atomic_set(&vha->loop_state, LOOP_UPDATE);
atomic_set(&vha->loop_down_timer, 0);
vha->flags.management_server_logged_in = 0;




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