diff options
| author | Lars-Peter Clausen <lars@metafoo.de> | 2011-11-15 13:34:40 +0100 |
|---|---|---|
| committer | Lokesh Pathak <lpathak@nvidia.com> | 2012-03-05 07:50:17 -0800 |
| commit | deb86a80254744b4e953fc9a95a616cc939e0acc (patch) | |
| tree | 3583052196c0d7ec05437f7e822e75fc9ce584a4 /drivers/base/regmap | |
| parent | bc4857e90fa0c49461eaad3dd1fc25293b0c31ef (diff) | |
regmap: Do not call regcache_exit from regcache_rbtree_init error path
Calling regcache_exit from regcache_rbtree_init is first of all a layering
violation and secondly will cause double frees. regcache_exit will free buffers
allocated by the core, but the core will also free the same buffers when the
cacheops init callback returns an error. Thus we end up with a double free.
Fix this by not calling regcache_exit but only free those buffers which, have
been allocated in this function.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Acked-by: Dimitris Papastamos <dp@opensource.wolfsonmicro.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
(cherry picked from commit 462a185c5cea7063348003c1644b70a6f6780f01)
Change-Id: Ib3e955599995543d2948d3f85ca46d648fee6bd9
Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com>
Reviewed-on: http://git-master/r/87557
Diffstat (limited to 'drivers/base/regmap')
| -rw-r--r-- | drivers/base/regmap/regcache-rbtree.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/base/regmap/regcache-rbtree.c b/drivers/base/regmap/regcache-rbtree.c index e31498499b0f..e71320f61d18 100644 --- a/drivers/base/regmap/regcache-rbtree.c +++ b/drivers/base/regmap/regcache-rbtree.c @@ -17,6 +17,7 @@ static int regcache_rbtree_write(struct regmap *map, unsigned int reg, unsigned int value); +static int regcache_rbtree_exit(struct regmap *map); struct regcache_rbtree_node { /* the actual rbtree node holding this block */ @@ -149,7 +150,7 @@ static int regcache_rbtree_init(struct regmap *map) return 0; err: - regcache_exit(map); + regcache_rbtree_exit(map); return ret; } |