[PATCH linux dev-4.10 v6 2/2] drivers/leds: pca955x count LED lines as GPIO

[Brad Bishop]

> On Jul 29, 2017, at 2:36 PM, Christopher Bostic <cbostic at linux.vnet.ibm.com> wrote:
> 
> In order for gpio-keys-polled driver to properly register pins
> connected to the pca955x chip it is necessary to count 'LED' lines
> as part of the total gpio count.  The assocated gpio_chip struct
> for the pca955x is then set to all available I/O (LEDS and 'GPIO').
> Failure to do so will cause any pin # > GPIO pin count to fail
> gpio-keys-polled probe/registration as it falls outside the bounds
> of what the gpio_chip struct indicates is available.
> 
> Signed-off-by: Christopher Bostic <cbostic at linux.vnet.ibm.com>
Tested-by: Brad Bishop <bradleyb at fuzziesquirrel.com>

> ---
> drivers/leds/leds-pca955x.c | 2 ++
> 1 file changed, 2 insertions(+)
> 
> diff --git a/drivers/leds/leds-pca955x.c b/drivers/leds/leds-pca955x.c
> index 9216742..4fa58b9 100644
> --- a/drivers/leds/leds-pca955x.c
> +++ b/drivers/leds/leds-pca955x.c
> @@ -472,6 +472,8 @@ static int pca955x_probe(struct i2c_client *client,
> 			ngpios++;
> 			break;
> 		case PCA955X_TYPE_LED:
> +			ngpios++;
> +
> 			/*
> 			 * Platform data can specify LED names and
> 			 * default triggers
> -- 
> 1.8.2.2