From: Meng Li Meng.Li@windriver.com
[ Upstream commit e41a962f82e7afb5b1ee644f48ad0b3aee656268 ]
There is a upstream commit cffa4b2122f5("regmap:debugfs: Fix a memory leak when calling regmap_attach_dev") that adds a if condition when create name for debugfs_name. With below function invoking logical, debugfs_name is freed in regmap_debugfs_exit(), but it is not created again because of the if condition introduced by above commit. regmap_reinit_cache() regmap_debugfs_exit() ... regmap_debugfs_init() So, set debugfs_name to NULL after it is freed.
Fixes: cffa4b2122f5 ("regmap: debugfs: Fix a memory leak when calling regmap_attach_dev") Signed-off-by: Meng Li Meng.Li@windriver.com Link: https://lore.kernel.org/r/20210226021737.7690-1-Meng.Li@windriver.com Signed-off-by: Mark Brown broonie@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/base/regmap/regmap-debugfs.c | 1 + 1 file changed, 1 insertion(+)
diff --git a/drivers/base/regmap/regmap-debugfs.c b/drivers/base/regmap/regmap-debugfs.c index 398991381e9a..4f2ff1b2b450 100644 --- a/drivers/base/regmap/regmap-debugfs.c +++ b/drivers/base/regmap/regmap-debugfs.c @@ -661,6 +661,7 @@ void regmap_debugfs_exit(struct regmap *map) regmap_debugfs_free_dump_cache(map); mutex_unlock(&map->cache_lock); kfree(map->debugfs_name); + map->debugfs_name = NULL; } else { struct regmap_debugfs_node *node, *tmp;