From: Jiasheng Jiang jiasheng@iscas.ac.cn
[ Upstream commit ad64639417161e90b30dda00486570eb150aeee5 ]
Add check for ioremap() and return the error if it fails in order to guarantee the success of ioremap().
Fixes: 3b588e43ee5c ("pinctrl: nuvoton: add NPCM7xx pinctrl and GPIO driver") Signed-off-by: Jiasheng Jiang jiasheng@iscas.ac.cn Reviewed-by: Andy Shevchenko andy.shevchenko@gmail.com Link: https://lore.kernel.org/r/20230607095829.1345-1-jiasheng@iscas.ac.cn Signed-off-by: Linus Walleij linus.walleij@linaro.org Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/pinctrl/nuvoton/pinctrl-npcm7xx.c | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/drivers/pinctrl/nuvoton/pinctrl-npcm7xx.c b/drivers/pinctrl/nuvoton/pinctrl-npcm7xx.c index 21e61c2a37988..843ffcd968774 100644 --- a/drivers/pinctrl/nuvoton/pinctrl-npcm7xx.c +++ b/drivers/pinctrl/nuvoton/pinctrl-npcm7xx.c @@ -1884,6 +1884,8 @@ static int npcm7xx_gpio_of(struct npcm7xx_pinctrl *pctrl) }
pctrl->gpio_bank[id].base = ioremap(res.start, resource_size(&res)); + if (!pctrl->gpio_bank[id].base) + return -EINVAL;
ret = bgpio_init(&pctrl->gpio_bank[id].gc, dev, 4, pctrl->gpio_bank[id].base + NPCM7XX_GP_N_DIN,