pinctrl: renesas: Switch to use kmemdup_array()
Let kmemdup_array() take care of multiplication and possible overflow.
Signed-off-by: Shen Lichuan <shenlichuan@vivo.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/20240822061438.14617-1-shenlichuan@vivo.com
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
diff --git a/drivers/pinctrl/renesas/pinctrl-rzg2l.c b/drivers/pinctrl/renesas/pinctrl-rzg2l.c
index 5e3d735..2a73a8c 100644
--- a/drivers/pinctrl/renesas/pinctrl-rzg2l.c
+++ b/drivers/pinctrl/renesas/pinctrl-rzg2l.c
@@ -528,8 +528,7 @@ static int rzg2l_map_add_config(struct pinctrl_map *map,
{
unsigned long *cfgs;
- cfgs = kmemdup(configs, num_configs * sizeof(*cfgs),
- GFP_KERNEL);
+ cfgs = kmemdup_array(configs, num_configs, sizeof(*cfgs), GFP_KERNEL);
if (!cfgs)
return -ENOMEM;
diff --git a/drivers/pinctrl/renesas/pinctrl-rzv2m.c b/drivers/pinctrl/renesas/pinctrl-rzv2m.c
index 0cae547..4062c56 100644
--- a/drivers/pinctrl/renesas/pinctrl-rzv2m.c
+++ b/drivers/pinctrl/renesas/pinctrl-rzv2m.c
@@ -196,8 +196,7 @@ static int rzv2m_map_add_config(struct pinctrl_map *map,
{
unsigned long *cfgs;
- cfgs = kmemdup(configs, num_configs * sizeof(*cfgs),
- GFP_KERNEL);
+ cfgs = kmemdup_array(configs, num_configs, sizeof(*cfgs), GFP_KERNEL);
if (!cfgs)
return -ENOMEM;
diff --git a/drivers/pinctrl/renesas/pinctrl.c b/drivers/pinctrl/renesas/pinctrl.c
index 03e9bdb..29d16c9 100644
--- a/drivers/pinctrl/renesas/pinctrl.c
+++ b/drivers/pinctrl/renesas/pinctrl.c
@@ -83,8 +83,7 @@ static int sh_pfc_map_add_config(struct pinctrl_map *map,
{
unsigned long *cfgs;
- cfgs = kmemdup(configs, num_configs * sizeof(*cfgs),
- GFP_KERNEL);
+ cfgs = kmemdup_array(configs, num_configs, sizeof(*cfgs), GFP_KERNEL);
if (cfgs == NULL)
return -ENOMEM;
