[Letux-kernel] [PATCH] gpio: add another error check for missing gpiochips

[H. Nikolaus Schaller]

Thanks,
merged into work/hacks fine and works :)

BR,
Nikolaus


> Am 04.06.2016 um 14:19 schrieb Andreas Kemnade <andreas at kemnade.info>:
> 
> Signed-off-by: Andreas Kemnade <andreas at kemnade.info>
> ---
> drivers/gpio/gpiolib-of.c | 5 ++++-
> 1 file changed, 4 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/gpio/gpiolib-of.c b/drivers/gpio/gpiolib-of.c
> index d22dcc3..3f1b2e9 100644
> --- a/drivers/gpio/gpiolib-of.c
> +++ b/drivers/gpio/gpiolib-of.c
> @@ -39,7 +39,10 @@ static int of_gpiochip_find_and_xlate(struct gpio_chip *gc, void *data)
> {
> 	struct gg_data *gg_data = data;
> 	int ret;
> -
> +	if (gc == NULL) {
> +		printk("gpiolibof_match  chip is missing\n");
> +		return false;
> +	}
> 	if ((gc->of_node != gg_data->gpiospec.np) ||
> 	    (gc->of_gpio_n_cells != gg_data->gpiospec.args_count) ||
> 	    (!gc->of_xlate))
> -- 
> 2.1.4
> 
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