selftests: ublk: don't pass ${dev_id} to _cleanup_test()

More devices can be created in single tests, so simply remove all
ublk devices in _cleanup_test(), meantime remove the ${dev_id} argument
of _cleanup_test().

Signed-off-by: Ming Lei <ming.lei@redhat.com>
Link: https://lore.kernel.org/r/20250303124324.3563605-7-ming.lei@redhat.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>

tools/testing/selftests/ublk/test_common.sh

@@ -89,7 +89,7 @@ _show_result()
 }
 
 _cleanup_test() {
-	"${UBLK_PROG}" del -n "$1"
+	"${UBLK_PROG}" del -a
 }
 
 _add_ublk_dev() {

tools/testing/selftests/ublk/test_loop_01.sh

@@ -24,7 +24,7 @@ fio --name=write_and_verify \
     --bs=4k > /dev/null 2>&1
 ERR_CODE=$?
 
-_cleanup_test "${dev_id}" "loop"
+_cleanup_test "loop"
 
 _remove_backfile "$backfile_0"
 

tools/testing/selftests/ublk/test_loop_02.sh

@@ -15,7 +15,7 @@ dev_id=$(_add_ublk_dev -t loop "$backfile_0")
 _mkfs_mount_test /dev/ublkb"${dev_id}"
 ERR_CODE=$?
 
-_cleanup_test "${dev_id}" "loop"
+_cleanup_test "loop"
 
 _remove_backfile "$backfile_0"
 

tools/testing/selftests/ublk/test_loop_03.sh

@@ -26,7 +26,7 @@ fio --name=write_and_verify \
     --bs=4k > /dev/null 2>&1
 ERR_CODE=$?
 
-_cleanup_test "${dev_id}" "loop"
+_cleanup_test "loop"
 
 _remove_backfile "$backfile_0"
 

tools/testing/selftests/ublk/test_loop_04.sh

@@ -15,7 +15,7 @@ dev_id=$(_add_ublk_dev -t loop -z "$backfile_0")
 _mkfs_mount_test /dev/ublkb"${dev_id}"
 ERR_CODE=$?
 
-_cleanup_test "${dev_id}" "loop"
+_cleanup_test "loop"
 
 _remove_backfile "$backfile_0"
 

tools/testing/selftests/ublk/test_null_01.sh

@@ -14,6 +14,6 @@ dev_id=$(_add_ublk_dev -t null)
 fio --name=job1 --filename=/dev/ublkb"${dev_id}" --ioengine=libaio --rw=readwrite --iodepth=32 --size=256M > /dev/null 2>&1
 ERR_CODE=$?
 
-_cleanup_test "${dev_id}" "null"
+_cleanup_test "null"
 
 _show_result $TID $ERR_CODE