[PATCH 1/3] 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 samuel@sholland.org ---

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 8c77777dbe3..57e87960ee4 100644 --- a/drivers/gpio/gpio-uclass.c +++ b/drivers/gpio/gpio-uclass.c @@ -140,7 +140,8 @@ 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; }

/*