This is a note to let you know that I've just added the patch titled
pinctrl: npcm7xx: Add missing check for ioremap
to the 6.4-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
pinctrl-npcm7xx-add-missing-check-for-ioremap.patch
and it can be found in the queue-6.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 577b0c529b2de101403177bfa5ccb7b8f73e5da8
Author: Jiasheng Jiang <jiasheng@xxxxxxxxxxx>
Date: Wed Jun 7 17:58:29 2023 +0800
pinctrl: npcm7xx: Add missing check for ioremap
[ 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>
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,
