From 390ccffe07c45a3ad584ee6199cc1e63d07981ee Mon Sep 17 00:00:00 2001 From: Samuel Holland Date: Sat, 11 Sep 2021 17:05:51 -0500 Subject: [PATCH] gpio: Verify validity of pin offsets when looking up names Translation of a pin name to a device+offset should fail if the offset is larger than the number of pins in the GPIO bank. Signed-off-by: Samuel Holland Reviewed-by: Simon Glass --- drivers/gpio/gpio-uclass.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/gpio/gpio-uclass.c b/drivers/gpio/gpio-uclass.c index bb2f232..45a7f8d 100644 --- a/drivers/gpio/gpio-uclass.c +++ b/drivers/gpio/gpio-uclass.c @@ -141,7 +141,8 @@ int dm_gpio_lookup_name(const char *name, struct gpio_desc *desc) if (!strncasecmp(name, uc_priv->bank_name, len)) { if (!strict_strtoul(name + len, 10, &offset)) - break; + if (offset < uc_priv->gpio_count) + break; } /* -- 2.7.4