The null target doesn't handle IO, so disable partition scan to avoid IO
failures caused by integrity verification during the kernel's partition
table read.

Signed-off-by: Ming Lei <ming.lei@redhat.com>
---
 tools/testing/selftests/ublk/test_null_04.sh | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/tools/testing/selftests/ublk/test_null_04.sh b/tools/testing/selftests/ublk/test_null_04.sh
index 22328e0f3925..a5599d38583a 100755
--- a/tools/testing/selftests/ublk/test_null_04.sh
+++ b/tools/testing/selftests/ublk/test_null_04.sh
@@ -21,7 +21,7 @@ _check_value() {
 _test_metadata_only() {
 	local dev_id
 
-	dev_id=$(_add_ublk_dev -t null -u --metadata_size 8)
+	dev_id=$(_add_ublk_dev -t null -u --no_auto_part_scan --metadata_size 8)
 	_check_add_dev "$TID" $?
 
 	_check_value "metadata_size" "$(_get_metadata_size "$dev_id" metadata_size)" 8 &&
@@ -40,7 +40,7 @@ _test_metadata_only() {
 _test_integrity_capable_ip() {
 	local dev_id
 
-	dev_id=$(_add_ublk_dev -t null -u --integrity_capable --metadata_size 64 --pi_offset 56 --csum_type ip)
+	dev_id=$(_add_ublk_dev -t null -u --no_auto_part_scan --integrity_capable --metadata_size 64 --pi_offset 56 --csum_type ip)
 	_check_add_dev "$TID" $?
 
 	_check_value "metadata_size" "$(_get_metadata_size "$dev_id" metadata_size)" 64 &&
@@ -59,7 +59,7 @@ _test_integrity_capable_ip() {
 _test_integrity_reftag_t10dif() {
 	local dev_id
 
-	dev_id=$(_add_ublk_dev -t null -u --integrity_reftag --metadata_size 8 --csum_type t10dif)
+	dev_id=$(_add_ublk_dev -t null -u --no_auto_part_scan --integrity_reftag --metadata_size 8 --csum_type t10dif)
 	_check_add_dev "$TID" $?
 
 	_check_value "metadata_size" "$(_get_metadata_size "$dev_id" metadata_size)" 8 &&
@@ -78,7 +78,7 @@ _test_integrity_reftag_t10dif() {
 _test_nvme_csum() {
 	local dev_id
 
-	dev_id=$(_add_ublk_dev -t null -u --metadata_size 16 --csum_type nvme --tag_size 8)
+	dev_id=$(_add_ublk_dev -t null -u --no_auto_part_scan --metadata_size 16 --csum_type nvme --tag_size 8)
 	_check_add_dev "$TID" $?
 
 	_check_value "metadata_size" "$(_get_metadata_size "$dev_id" metadata_size)" 16 &&
-- 
2.47.0