commit b2d1453a45aa8477b1d33ee94a7694146bb8b340
author Giridhar Malavali <gmalavali@marvell.com> Tue Apr 02 14:24:32 2019 -0700
committer Martin K. Petersen <martin.petersen@oracle.com> Wed Apr 03 23:45:58 2019 -0400
tree 2acf196e28b2601b333ebeb4aef903482469b1cc
parent e39a6645d9ec3a9be6470adae1df0f924d1f0737

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>

drivers/scsi/qla2xxx/qla_nvme.c

diff --git a/drivers/scsi/qla2xxx/qla_nvme.c b/drivers/scsi/qla2xxx/qla_nvme.c
index 46c14bf..1ca63e8 100644
--- 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,