The 'probe' callback in __register_blkdev() is only used
under the CONFIG_BLOCK_LEGACY_AUTOLOAD deprecation guard.
The loop_probe() function is only used for that callback,
so guard it too, accordingly.
See commit fbdee71bb5d8 ("block: deprecate autoloading based on dev_t").
Signed-off-by: Mauricio Faria de Oliveira <mfo@xxxxxxxxxxxxx>
---
v2:
- do not remove loop_probe / have two calls for (__)register_blkdev(),
instead define it as NULL, keep one call for __register_blkdev(),
(thanks: Christoph Hellwig)
drivers/block/loop.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/drivers/block/loop.c b/drivers/block/loop.c
index 37511d2b2caf..6e56c3faacac 100644
--- a/drivers/block/loop.c
+++ b/drivers/block/loop.c
@@ -2093,6 +2093,7 @@ static void loop_remove(struct loop_device *lo)
put_disk(lo->lo_disk);
}
+#ifdef CONFIG_BLOCK_LEGACY_AUTOLOAD
static void loop_probe(dev_t dev)
{
int idx = MINOR(dev) >> part_shift;
@@ -2101,6 +2102,9 @@ static void loop_probe(dev_t dev)
return;
loop_add(idx);
}
+#else
+#define loop_probe NULL
+#endif /* !CONFIG_BLOCK_LEGACY_AUTOLOAD */
static int loop_control_remove(int idx)
{
--
2.39.2
