Mirrors/u-boot
2
0
Fork 0
mirror of https://github.com/AsahiLinux/u-boot synced 2024-11-25 14:10:43 +00:00
Code Issues Projects Releases Packages Wiki Activity

gpio: Verify validity of pin offsets from device trees

Browse source 
Translation of an OF GPIO specifier should fail if the pin offset is
larger than the number of pins in the GPIO bank.

Signed-off-by: Samuel Holland <samuel@sholland.org>
Reviewed-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Samuel Holland 2021-09-11 17:05:52 -05:00 committed by Tom Rini
parent 390ccffe07
commit 37c10bf7ef
1 changed files with 4 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

4
drivers/gpio/gpio-uclass.c
View file

@ -189,10 +189,14 @@ int gpio_lookup_name(const char *name, struct udevice **devp,
int gpio_xlate_offs_flags(struct udevice *dev, struct gpio_desc *desc,
struct ofnode_phandle_args *args)
{
struct gpio_dev_priv *uc_priv = dev_get_uclass_priv(dev);
if (args->args_count < 1)
return -EINVAL;
desc->offset = args->args[0];
if (desc->offset >= uc_priv->gpio_count)
return -EINVAL;
if (args->args_count < 2)
return 0;