gpio :gpio-mm-lantiq: Use devm_kzalloc

Replace kzalloc with the device managed devm_kzalloc

Cc: Alexandre Courbot <gnurou@gmail.com>
Cc: John Crispin <blogic@openwrt.org>
Signed-off-by: Ricardo Ribalda Delgado <ricardo.ribalda@gmail.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

diff --git a/drivers/gpio/gpio-mm-lantiq.c b/drivers/gpio/gpio-mm-lantiq.c
index f228b1c..7890163 100644 (file)
--- a/drivers/gpio/gpio-mm-lantiq.c
+++ b/drivers/gpio/gpio-mm-lantiq.c
@@ -107,14 +107,13 @@ static int ltq_mm_probe(struct platform_device *pdev)
        struct resource *res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
        struct ltq_mm *chip;
        const __be32 *shadow;
-       int ret = 0;
 
        if (!res) {
                dev_err(&pdev->dev, "failed to get memory resource\n");
                return -ENOENT;
        }
 
-       chip = kzalloc(sizeof(*chip), GFP_KERNEL);
+       chip = devm_kzalloc(&pdev->dev, sizeof(*chip), GFP_KERNEL);
        if (!chip)
                return -ENOMEM;
 
@@ -129,10 +128,7 @@ static int ltq_mm_probe(struct platform_device *pdev)
        if (shadow)
                chip->shadow = be32_to_cpu(*shadow);
 
-       ret = of_mm_gpiochip_add(pdev->dev.of_node, &chip->mmchip);
-       if (ret)
-               kfree(chip);
-       return ret;
+       return of_mm_gpiochip_add(pdev->dev.of_node, &chip->mmchip);
 }
 
 static const struct of_device_id ltq_mm_match[] = {