scsi: qla2xxx: Fix driver unload when FC-NVMe LUNs are connected

This patch allows driver to unload using "modprobe -r" when FC-NVMe LUNs
are connected.

Signed-off-by: Giridhar Malavali <gmalavali@marvell.com>
Signed-off-by: Himanshu Madhani <hmadhani@marvell.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

diff --git a/drivers/scsi/qla2xxx/qla_nvme.c b/drivers/scsi/qla2xxx/qla_nvme.c
index 46c14bf..1ca63e8 100644 (file)
--- a/drivers/scsi/qla2xxx/qla_nvme.c
+++ b/drivers/scsi/qla2xxx/qla_nvme.c
@@ -164,12 +164,13 @@ static void qla_nvme_sp_done(void *ptr, int res)
        if (!atomic_dec_and_test(&sp->ref_count))
                return;
 
-       if (res == QLA_SUCCESS)
-               fd->status = 0;
-       else
-               fd->status = NVME_SC_INTERNAL;
-
-       fd->rcv_rsplen = nvme->u.nvme.rsp_pyld_len;
+       if (res == QLA_SUCCESS) {
+               fd->rcv_rsplen = nvme->u.nvme.rsp_pyld_len;
+       } else {
+               fd->rcv_rsplen = 0;
+               fd->transferred_length = 0;
+       }
+       fd->status = 0;
        fd->done(fd);
        qla2xxx_rel_qpair_sp(sp->qpair, sp);
 
@@ -193,6 +194,22 @@ static void qla_nvme_abort_work(struct work_struct *work)
        if (!ha->flags.fw_started && (fcport && fcport->deleted))
                return;
 
+       if (ha->flags.host_shutting_down) {
+               ql_log(ql_log_info, sp->fcport->vha, 0xffff,
+                   "%s Calling done on sp: %p, type: 0x%x, sp->ref_count: 0x%x\n",
+                   __func__, sp, sp->type, atomic_read(&sp->ref_count));
+               sp->done(sp, 0);
+               return;
+       }
+
+       if (atomic_read(&sp->ref_count) == 0) {
+               WARN_ON(1);
+               ql_log(ql_log_info, fcport->vha, 0xffff,
+                       "%s: command alredy aborted on sp: %p\n",
+                       __func__, sp);
+               return;
+       }
+
        rval = ha->isp_ops->abort_command(sp);
 
        ql_dbg(ql_dbg_io, fcport->vha, 0x212b,

diff --git a/drivers/scsi/qla2xxx/qla_os.c b/drivers/scsi/qla2xxx/qla_os.c
index 60f06a2..d49208c 100644 (file)
--- a/drivers/scsi/qla2xxx/qla_os.c
+++ b/drivers/scsi/qla2xxx/qla_os.c
@@ -6742,8 +6742,10 @@ qla2x00_timer(struct timer_list *t)
         * FC-NVME
         * see if the active AEN count has changed from what was last reported.
         */
-       if (!vha->vp_idx && (atomic_read(&ha->nvme_active_aen_cnt) !=
-           ha->nvme_last_rptd_aen) && ha->zio_mode == QLA_ZIO_MODE_6) {
+       if (!vha->vp_idx &&
+           (atomic_read(&ha->nvme_active_aen_cnt) != ha->nvme_last_rptd_aen) &&
+           ha->zio_mode == QLA_ZIO_MODE_6 &&
+           !ha->flags.host_shutting_down) {
                ql_log(ql_log_info, vha, 0x3002,
                    "nvme: Sched: Set ZIO exchange threshold to %d.\n",
                    ha->nvme_last_rptd_aen);