linux-kernel - [PATCH] gpio_msm: using for_each_set

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Date:	Fri, 14 Sep 2012 10:28:31 +0800
From:	Wei Yongjun <weiyj.lk@...il.com>
To:	grant.likely@...retlab.ca, linus.walleij@...aro.org
Cc:	yongjun_wei@...ndmicro.com.cn, linux-kernel@...r.kernel.org
Subject: [PATCH] gpio_msm: using for_each_set_bit to simplify the code

From: Wei Yongjun <yongjun_wei@...ndmicro.com.cn>

Using for_each_set_bit() to simplify the code.

spatch with a semantic match is used to found this.
(http://coccinelle.lip6.fr/)

Signed-off-by: Wei Yongjun <yongjun_wei@...ndmicro.com.cn>
---
 drivers/gpio/gpio-msm-v2.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/drivers/gpio/gpio-msm-v2.c b/drivers/gpio/gpio-msm-v2.c
index 5cb1227..38305be 100644
--- a/drivers/gpio/gpio-msm-v2.c
+++ b/drivers/gpio/gpio-msm-v2.c
@@ -317,9 +317,7 @@ static void msm_summary_irq_handler(unsigned int irq, struct irq_desc *desc)
 
 	chained_irq_enter(chip, desc);
 
-	for (i = find_first_bit(msm_gpio.enabled_irqs, NR_GPIO_IRQS);
-	     i < NR_GPIO_IRQS;
-	     i = find_next_bit(msm_gpio.enabled_irqs, NR_GPIO_IRQS, i + 1)) {
+	for_each_set_bit(i, msm_gpio.enabled_irqs, NR_GPIO_IRQS) {
 		if (readl(GPIO_INTR_STATUS(i)) & BIT(INTR_STATUS))
 			generic_handle_irq(msm_gpio_to_irq(&msm_gpio.gpio_chip,
 							   i));


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