From: Dafna Hirschfeld dafna.hirschfeld@collabora.com
[ Upstream commit d7faa8ffb6be57bf8233a4b5a636d76b83c51ce7 ]
In function rockchip_dt_node_to_map, a new_map variable is allocated by:
new_map = devm_kcalloc(pctldev->dev, map_num, sizeof(*new_map), GFP_KERNEL);
This uses devres and attaches new_map to the pinctrl driver. This cause a leak since new_map is not released when the probed driver is removed. Fix it by using kcalloc to allocate new_map and free it in `rockchip_dt_free_map`
Signed-off-by: Dafna Hirschfeld dafna.hirschfeld@collabora.com Reviewed-by: Heiko Stuebner heiko@sntech.de Link: https://lore.kernel.org/r/20200506100903.15420-1-dafna.hirschfeld@collabora.... Signed-off-by: Linus Walleij linus.walleij@linaro.org Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/pinctrl/pinctrl-rockchip.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-)
diff --git a/drivers/pinctrl/pinctrl-rockchip.c b/drivers/pinctrl/pinctrl-rockchip.c index 0989513463393..d7869b636889e 100644 --- a/drivers/pinctrl/pinctrl-rockchip.c +++ b/drivers/pinctrl/pinctrl-rockchip.c @@ -508,8 +508,8 @@ static int rockchip_dt_node_to_map(struct pinctrl_dev *pctldev, }
map_num += grp->npins; - new_map = devm_kcalloc(pctldev->dev, map_num, sizeof(*new_map), - GFP_KERNEL); + + new_map = kcalloc(map_num, sizeof(*new_map), GFP_KERNEL); if (!new_map) return -ENOMEM;
@@ -519,7 +519,7 @@ static int rockchip_dt_node_to_map(struct pinctrl_dev *pctldev, /* create mux map */ parent = of_get_parent(np); if (!parent) { - devm_kfree(pctldev->dev, new_map); + kfree(new_map); return -EINVAL; } new_map[0].type = PIN_MAP_TYPE_MUX_GROUP; @@ -546,6 +546,7 @@ static int rockchip_dt_node_to_map(struct pinctrl_dev *pctldev, static void rockchip_dt_free_map(struct pinctrl_dev *pctldev, struct pinctrl_map *map, unsigned num_maps) { + kfree(map); }
static const struct pinctrl_ops rockchip_pctrl_ops = {