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gpio: gpio-mm-lantiq: Use of_property_read_u32 

Instead of parsing manually the shadow content, use the much simpler
helper of_property_read_u32.

Cc: Alexandre Courbot <gnurou@gmail.com>
Cc: Grant Likely <grant.likely@linaro.org>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: John Crispin <blogic@openwrt.org>
Cc: devicetree@vger.kernel.org
Cc: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Ricardo Ribalda Delgado <ricardo.ribalda@gmail.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
hifive-unleashed-5.1
Ricardo Ribalda Delgado 2015-01-19 12:27:24 +01:00 committed by Linus Walleij
parent f3f26c2f4b
commit 68a99b187d
1 changed files with 3 additions and 4 deletions
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7
drivers/gpio/gpio-mm-lantiq.c
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@ -105,7 +105,7 @@ static void ltq_mm_save_regs(struct of_mm_gpio_chip *mm_gc)
static int ltq_mm_probe(struct platform_device *pdev)
{
struct ltq_mm *chip;
const __be32 *shadow;
u32 shadow;
chip = devm_kzalloc(&pdev->dev, sizeof(*chip), GFP_KERNEL);
if (!chip)
@ -117,9 +117,8 @@ static int ltq_mm_probe(struct platform_device *pdev)
chip->mmchip.save_regs = ltq_mm_save_regs;
/* store the shadow value if one was passed by the devicetree */
shadow = of_get_property(pdev->dev.of_node, "lantiq,shadow", NULL);
if (shadow)
chip->shadow = be32_to_cpu(*shadow);
if (!of_property_read_u32(pdev->dev.of_node, "lantiq,shadow", &shadow))
chip->shadow = shadow;
return of_mm_gpiochip_add(pdev->dev.of_node, &chip->mmchip);
}