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: 32c170ff15b0 ("pinctrl: stm32: set default gpio line names using pin names")
Signed-off-by: Ma Ke <make24@xxxxxxxxxxx>
---
Changes in v2:
- modified the patch according to suggestions, added braces;
- modified the typo.
---
drivers/pinctrl/stm32/pinctrl-stm32.c | 10 ++++++++--
1 file changed, 8 insertions(+), 2 deletions(-)
diff --git a/drivers/pinctrl/stm32/pinctrl-stm32.c b/drivers/pinctrl/stm32/pinctrl-stm32.c
index a8673739871d..f23b081f31b3 100644
--- a/drivers/pinctrl/stm32/pinctrl-stm32.c
+++ b/drivers/pinctrl/stm32/pinctrl-stm32.c
@@ -1374,10 +1374,16 @@ static int stm32_gpiolib_register_bank(struct stm32_pinctrl *pctl, struct fwnode
for (i = 0; i < npins; i++) {
stm32_pin = stm32_pctrl_get_desc_pin_from_gpio(pctl, bank, i);
- if (stm32_pin && stm32_pin->pin.name)
+ if (stm32_pin && stm32_pin->pin.name) {
names[i] = devm_kasprintf(dev, GFP_KERNEL, "%s", stm32_pin->pin.name);
- else
+ if (!names[i]) {
+ err = -ENOMEM;
+ goto err_clk;
+ }
+ }
+
+ else {
names[i] = NULL;
+ }
}
bank->gpio_chip.names = (const char * const *)names;
--
2.25.1
