regmap: Fix memory leak from regmap_register_patch

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>

diff --git a/drivers/base/regmap/regmap.c b/drivers/base/regmap/regmap.c
index 183ec789c3fd66b08af41a3fbe1f10c4602aecf4..06a796821e8b0f8f7ebc82211e143a22fb51e3f8 100644 (file)
--- a/drivers/base/regmap/regmap.c
+++ b/drivers/base/regmap/regmap.c
@@ -1349,6 +1349,7 @@ 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);