[PATCH 5.4 078/178] regmap: Fix memory leak from regmap_register_patch

[Sasha Levin]

From: Charles Keepax <ckeepax@xxxxxxxxxxxxxxxxxxxxx>

[ 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@xxxxxxxxxxxxxxxxxxxxx>
Link: https://lore.kernel.org/r/20200617152129.19655-1-ckeepax@xxxxxxxxxxxxxxxxxxxxx
Signed-off-by: Mark Brown <broonie@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
 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 59f911e577192..508bbd6ea4396 100644
--- a/drivers/base/regmap/regmap.c
+++ b/drivers/base/regmap/regmap.c
@@ -1356,6 +1356,7 @@ 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