6.7-stable review patch. If anyone has any objections, please let me know.
------------------
From: Miquel Raynal <miquel.raynal@xxxxxxxxxxx>
commit a7d84a2e7663bbe12394cc771107e04668ea313a upstream.
While switching to ref counters for track mtd devices use, the vmu-flash
driver was forgotten. The reason for reading the ref counter seems
debatable, but let's just fix the build for now.
Fixes: 19bfa9ebebb5 ("mtd: use refcount to prevent corruption")
Reported-by: kernel test robot <lkp@xxxxxxxxx>
Closes: https://lore.kernel.org/oe-kbuild-all/202312022315.79twVRZw-lkp@xxxxxxxxx/
Cc: stable@xxxxxxxxxxxxxxx
Signed-off-by: Miquel Raynal <miquel.raynal@xxxxxxxxxxx>
Link: https://lore.kernel.org/linux-mtd/20231205075936.13831-1-miquel.raynal@xxxxxxxxxxx
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/mtd/maps/vmu-flash.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/mtd/maps/vmu-flash.c
+++ b/drivers/mtd/maps/vmu-flash.c
@@ -719,7 +719,7 @@ static int vmu_can_unload(struct maple_d
card = maple_get_drvdata(mdev);
for (x = 0; x < card->partitions; x++) {
mtd = &((card->mtd)[x]);
- if (mtd->usecount > 0)
+ if (kref_read(&mtd->refcnt))
return 0;
}
return 1;
