Le 12/09/2024 à 04:08, Ma Ke a écrit :
devm_kasprintf() can return a NULL pointer on failure but this returned
value is not checked. Fix this lack and check the returned value.
Found by code review.
Cc: stable@xxxxxxxxxxxxxxx
Fixes: a0f160ffcb83 ("pinctrl: add pinctrl/GPIO driver for Apple SoCs")
Signed-off-by: Ma Ke <make24@xxxxxxxxxxx>
---
drivers/pinctrl/pinctrl-apple-gpio.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/pinctrl/pinctrl-apple-gpio.c b/drivers/pinctrl/pinctrl-apple-gpio.c
index 3751c7de37aa..f861e63f4115 100644
--- a/drivers/pinctrl/pinctrl-apple-gpio.c
+++ b/drivers/pinctrl/pinctrl-apple-gpio.c
@@ -474,6 +474,9 @@ static int apple_gpio_pinctrl_probe(struct platform_device *pdev)
for (i = 0; i < npins; i++) {
pins[i].number = i;
pins[i].name = devm_kasprintf(&pdev->dev, GFP_KERNEL, "PIN%u", i);
+ if (!pins[i].name)
+ return -ENOMEM;
+
pins[i].drv_data = pctl;
pin_names[i] = pins[i].name;
pin_nums[i] = i;
Hi,
this is not really an issue. if pin[i].name is NULL, then
pinctrl_generic_add_group() below will fail with -EINVAL.
So your change only returns a more correct error code and saves a few
cycles in case of (unlikely) memory allocation issue.
Anyway:
Reviewed-by: Christophe JAILLET <christophe.jaillet@xxxxxxxxxx>
CJ
