[PATCH 4.19 068/131] regmap: Fix memory leak from regmap_register_patch

Sasha Levin
2020-06-29T20:08:10Z

From: Charles Keepax <ckeepax@opensource.cirrus.com>

[ Upstream commit 95b2c3ec4cb1689db2389c251d39f64490ba641c ]

When a register patch is registered the reg_sequence is copied but the
memory allocated is never freed. Add a kfree in regmap_exit to clean it
up.

Fixes: 22f0d90a3482 ("regmap: Support register patch sets")
Signed-off-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Link: https://lore.kernel.org/r/20200617152129.19655-1-ckeepax@opensource.cirrus.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/base/regmap/regmap.c | 1 +
1 file changed, 1 insertion(+)

diff --git a/drivers/base/regmap/regmap.c b/drivers/base/regmap/regmap.c
index 6c9f6988bc093..b38b2d8c333d5 100644
--- a/drivers/base/regmap/regmap.c
+++ b/drivers/base/regmap/regmap.c
@@ -1336,6 +1336,7 @@ void regmap_exit(struct regmap *map)
if (map->hwlock)
hwspin_lock_free(map->hwlock);
kfree_const(map->name);
+ kfree(map->patch);
kfree(map);
}
EXPORT_SYMBOL_GPL(regmap_exit);
--
2.25.1