diff options
| author | Richard Weinberger <richard@nod.at> | 2020-12-06 21:22:20 +0100 |
|---|---|---|
| committer | Miquel Raynal <miquel.raynal@bootlin.com> | 2020-12-07 12:29:11 +0100 |
| commit | 1ca71415f075353974524e96ed175306d8a937a8 (patch) | |
| tree | c384c0704de6005a57f46f1c1cbd9cd557b80674 /drivers/mtd/mtdcore.c | |
| parent | 18b9c9403758ff68d93ee2f593096778d58e6f76 (diff) | |
mtd: core: Fix refcounting for unpartitioned MTDs
Apply changes to usecount also to the master partition.
Otherwise we have no refcounting at all if an MTD has no partitions.
Cc: stable@vger.kernel.org
Fixes: 46b5889cc2c5 ("mtd: implement proper partition handling")
Signed-off-by: Richard Weinberger <richard@nod.at>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20201206202220.27290-1-richard@nod.at
Diffstat (limited to 'drivers/mtd/mtdcore.c')
| -rw-r--r-- | drivers/mtd/mtdcore.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/mtd/mtdcore.c b/drivers/mtd/mtdcore.c index 31d1be4b2261..2d6423d89a17 100644 --- a/drivers/mtd/mtdcore.c +++ b/drivers/mtd/mtdcore.c @@ -993,6 +993,8 @@ int __get_mtd_device(struct mtd_info *mtd) } } + master->usecount++; + while (mtd->parent) { mtd->usecount++; mtd = mtd->parent; @@ -1059,6 +1061,8 @@ void __put_mtd_device(struct mtd_info *mtd) mtd = mtd->parent; } + master->usecount--; + if (master->_put_device) master->_put_device(master); |