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Subject[PATCH] ARM: at91/gpio: using for_each_set_bit to simplify the code
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From: Wei Yongjun <yongjun_wei@trendmicro.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@trendmicro.com.cn>
---
arch/arm/mach-at91/gpio.c | 4 +---
1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/arch/arm/mach-at91/gpio.c b/arch/arm/mach-at91/gpio.c
index be42cf0..ed6ed8c 100644
--- a/arch/arm/mach-at91/gpio.c
+++ b/arch/arm/mach-at91/gpio.c
@@ -609,10 +609,8 @@ static void gpio_irq_handler(unsigned irq, struct irq_desc *desc)
continue;
}

- n = find_first_bit(&isr, BITS_PER_LONG);
- while (n < BITS_PER_LONG) {
+ for_each_set_bit(n, &isr, BITS_PER_LONG) {
generic_handle_irq(irq_find_mapping(at91_gpio->domain, n));
- n = find_next_bit(&isr, BITS_PER_LONG, n + 1);
}
}
chained_irq_exit(chip, desc);


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