linux-kernel - [PATCH 4/8] gpio-mm-lantiq: Use of_propery_read

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Date:	Sun, 18 Jan 2015 12:39:29 +0100
From:	Ricardo Ribalda Delgado <ricardo.ribalda@...il.com>
To:	linux-gpio@...r.kernel.org, linux-kernel@...r.kernel.org
Cc:	Ricardo Ribalda Delgado <ricardo.ribalda@...il.com>,
	Linus Walleij <linus.walleij@...aro.org>,
	Alexandre Courbot <gnurou@...il.com>,
	Grant Likely <grant.likely@...aro.org>,
	Rob Herring <robh+dt@...nel.org>,
	John Crispin <blogic@...nwrt.org>, devicetree@...r.kernel.org
Subject: [PATCH 4/8] gpio-mm-lantiq: Use of_propery_read_u16

Instead of parsing manually the shadow content, use the much simpler
helper of_property_read_u16.

Cc: Linus Walleij <linus.walleij@...aro.org>
Cc: Alexandre Courbot <gnurou@...il.com>
Cc: Grant Likely <grant.likely@...aro.org>
Cc: Rob Herring <robh+dt@...nel.org>
Cc: John Crispin <blogic@...nwrt.org>
Cc: devicetree@...r.kernel.org
Signed-off-by: Ricardo Ribalda Delgado <ricardo.ribalda@...il.com>
---
 drivers/gpio/gpio-mm-lantiq.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/drivers/gpio/gpio-mm-lantiq.c b/drivers/gpio/gpio-mm-lantiq.c
index 7d55161..b511a6b 100644
--- a/drivers/gpio/gpio-mm-lantiq.c
+++ b/drivers/gpio/gpio-mm-lantiq.c
@@ -105,7 +105,6 @@ 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;
 
 	chip = devm_kzalloc(&pdev->dev, sizeof(*chip), GFP_KERNEL);
 	if (!chip)
@@ -117,9 +116,8 @@ 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);
+	of_property_read_u16(pdev->dev.of_node, "lantiq,shadow",
+			     &chip->shadow);
 
 	return of_mm_gpiochip_add(pdev->dev.of_node, &chip->mmchip);
 }
-- 
2.1.4

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