[PATCH 6.3 368/431] pinctrl: npcm7xx: Add missing check for ioremap

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From: Jiasheng Jiang <jiasheng@xxxxxxxxxxx>

[ 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@xxxxxxxxxxx>
Reviewed-by: Andy Shevchenko <andy.shevchenko@xxxxxxxxx>
Link: https://lore.kernel.org/r/20230607095829.1345-1-jiasheng@xxxxxxxxxxx
Signed-off-by: Linus Walleij <linus.walleij@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
 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 ff5bcea172e84..071bdfd570f94 100644
--- a/drivers/pinctrl/nuvoton/pinctrl-npcm7xx.c
+++ b/drivers/pinctrl/nuvoton/pinctrl-npcm7xx.c
@@ -1881,6 +1881,8 @@ 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,
-- 
2.39.2






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