Re: [PATCH] gpio: gpiolib: use devm_* API to simplify driver code

From: Grygorii Strashko
Date: Tue Aug 25 2015 - 04:38:58 EST

On 08/24/2015 03:05 PM, Peng Fan wrote:
Use devm_* API to simplify driver code.

Signed-off-by: Peng Fan <van.freenix@xxxxxxxxx>
Cc: Linus Walleij <linus.walleij@xxxxxxxxxx>
Cc: Alexandre Courbot <gnurou@xxxxxxxxx>
drivers/gpio/gpiolib.c | 11 +++++------
1 file changed, 5 insertions(+), 6 deletions(-)

diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c
index 6bc612b..f9470b0 100644
--- a/drivers/gpio/gpiolib.c
+++ b/drivers/gpio/gpiolib.c
@@ -243,7 +243,8 @@ int gpiochip_add(struct gpio_chip *chip)
int base = chip->base;
struct gpio_desc *descs;

- descs = kcalloc(chip->ngpio, sizeof(descs[0]), GFP_KERNEL);
+ descs = devm_kcalloc(chip->dev, chip->ngpio, sizeof(descs[0]),

^ above will not work for every one as NOT all GPIO drivers
implemented using dev/drv model, so chip->dev could be not set
(at least it was true when I've checked it last time).

To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at
Please read the FAQ at