gpio: name PCA953x gpio chips after device name

Instead of using the name directly from the I2C client
to name the gpio_chip, use dev_name() on the client->dev,
so we get the sometimes more unique device name, as I2C has
a mechanism for naming its devices explicitly in e.g.
board data.

This is a prerequisite for being able to reference
uniquely any I2C GPIO expander defined in a board file
when setting up GPIO descriptor tables.

Reviewed-by: Robert Jarzmik <robert.jarzmik@free.fr>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>

diff --git a/drivers/gpio/gpio-pca953x.c b/drivers/gpio/gpio-pca953x.c
index 023a32c..5401664 100644 (file)
--- a/drivers/gpio/gpio-pca953x.c
+++ b/drivers/gpio/gpio-pca953x.c
@@ -449,7 +449,7 @@ static void pca953x_setup_gpio(struct pca953x_chip *chip, int gpios)
 
        gc->base = chip->gpio_start;
        gc->ngpio = gpios;
-       gc->label = chip->client->name;
+       gc->label = dev_name(&chip->client->dev);
        gc->parent = &chip->client->dev;
        gc->owner = THIS_MODULE;
        gc->names = chip->names;