On 26. 12. 20 7:45, Syed Nayyar Waris wrote:
> Add extra check to see if sum of widths does not exceed 64. If it
> exceeds then return -EINVAL alongwith appropriate error message.
>
> Cc: Michal Simek <michal.simek@xxxxxxxxxx>
> Signed-off-by: Syed Nayyar Waris <syednwaris@xxxxxxxxx>
> ---
> drivers/gpio/gpio-xilinx.c | 6 ++++++
> 1 file changed, 6 insertions(+)
>
> diff --git a/drivers/gpio/gpio-xilinx.c b/drivers/gpio/gpio-xilinx.c
> index d565fbf128b7..c9d740ac711b 100644
> --- a/drivers/gpio/gpio-xilinx.c
> +++ b/drivers/gpio/gpio-xilinx.c
> @@ -319,6 +319,12 @@ static int xgpio_probe(struct platform_device *pdev)
>
> chip->gc.base = -1;
> chip->gc.ngpio = chip->gpio_width[0] + chip->gpio_width[1];
> +
> + if (chip->gc.ngpio > 64) {
> + dev_err(&pdev->dev, "invalid configuration: number of GPIO is greater than 64");
> + return -EINVAL;
> + }
> +
> chip->gc.parent = &pdev->dev;
> chip->gc.direction_input = xgpio_dir_in;
> chip->gc.direction_output = xgpio_dir_out;
>
Acked-by: Michal Simek <michal.simek@xxxxxxxxxx>
Thanks,
Michal
