This is a note to let you know that I've just added the patch titled
mtd: maps: vmu-flash: Fix the (mtd core) switch to ref counters
to the 6.6-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
mtd-maps-vmu-flash-fix-the-mtd-core-switch-to-ref-counters.patch
and it can be found in the queue-6.6 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From a7d84a2e7663bbe12394cc771107e04668ea313a Mon Sep 17 00:00:00 2001
From: Miquel Raynal <miquel.raynal@xxxxxxxxxxx>
Date: Tue, 5 Dec 2023 08:59:36 +0100
Subject: mtd: maps: vmu-flash: Fix the (mtd core) switch to ref counters
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(-)
diff --git a/drivers/mtd/maps/vmu-flash.c b/drivers/mtd/maps/vmu-flash.c
index a7ec947a3ebb..53019d313db7 100644
--- 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_device *mdev)
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;
--
2.43.0
Patches currently in stable-queue which might be from miquel.raynal@xxxxxxxxxxx are
queue-6.6/mtd-rawnand-prevent-crossing-lun-boundaries-during-sequential-reads.patch
queue-6.6/mtd-rawnand-fix-core-interference-with-sequential-reads.patch
queue-6.6/mtd-rawnand-clarify-conditions-to-enable-continuous-reads.patch
queue-6.6/mtd-rawnand-prevent-sequential-reads-with-on-die-ecc-engines.patch
queue-6.6/mtd-maps-vmu-flash-fix-the-mtd-core-switch-to-ref-counters.patch
