From: Quinn Tran <qutran@marvell.com>
Date: Fri, 14 Jul 2023 12:30:59 +0530
Subject: scsi: qla2xxx: Fix erroneous link up failure
Patch-mainline: v6.6-rc1
Git-commit: 5b51f35d127e7bef55fa869d2465e2bca4636454
References: bsc#1213747
Link up failure occurred where driver failed to see certain events from FW
indicating link up (AEN 8011) and fabric login completion (AEN 8014).
Without these 2 events, driver would not proceed forward to scan the
fabric. The cause of this is due to delay in the receive of interrupt for
Mailbox 60 that causes qla to set the fw_started flag late. The late
setting of this flag causes other interrupts to be dropped. These dropped
interrupts happen to be the link up (AEN 8011) and fabric login completion
(AEN 8014).
Set fw_started flag early to prevent interrupts being dropped.
Cc: stable@vger.kernel.org
Signed-off-by: Quinn Tran <qutran@marvell.com>
Signed-off-by: Nilesh Javali <njavali@marvell.com>
Link: https://lore.kernel.org/r/20230714070104.40052-6-njavali@marvell.com
Reviewed-by: Himanshu Madhani <himanshu.madhani@oracle.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Acked-by: Daniel Wagner <dwagner@suse.de>
---
drivers/scsi/qla2xxx/qla_init.c | 3 ++-
drivers/scsi/qla2xxx/qla_isr.c | 6 +++++-
2 files changed, 7 insertions(+), 2 deletions(-)
--- a/drivers/scsi/qla2xxx/qla_init.c
+++ b/drivers/scsi/qla2xxx/qla_init.c
@@ -4826,15 +4826,16 @@ qla2x00_init_rings(scsi_qla_host_t *vha)
if (ha->flags.edif_enabled)
mid_init_cb->init_cb.frame_payload_size = cpu_to_le16(ELS_MAX_PAYLOAD);
+ QLA_FW_STARTED(ha);
rval = qla2x00_init_firmware(vha, ha->init_cb_size);
next_check:
if (rval) {
+ QLA_FW_STOPPED(ha);
ql_log(ql_log_fatal, vha, 0x00d2,
"Init Firmware **** FAILED ****.\n");
} else {
ql_dbg(ql_dbg_init, vha, 0x00d3,
"Init Firmware -- success.\n");
- QLA_FW_STARTED(ha);
vha->u_ql2xexchoffld = vha->u_ql2xiniexchg = 0;
}
--- a/drivers/scsi/qla2xxx/qla_isr.c
+++ b/drivers/scsi/qla2xxx/qla_isr.c
@@ -1122,8 +1122,12 @@ qla2x00_async_event(scsi_qla_host_t *vha
unsigned long flags;
fc_port_t *fcport = NULL;
- if (!vha->hw->flags.fw_started)
+ if (!vha->hw->flags.fw_started) {
+ ql_log(ql_log_warn, vha, 0x50ff,
+ "Dropping AEN - %04x %04x %04x %04x.\n",
+ mb[0], mb[1], mb[2], mb[3]);
return;
+ }
/* Setup to process RIO completion. */
handle_cnt = 0;