ARM: mmp: using for_each_set_bit to simplify the code

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>
Signed-off-by: Haojian Zhuang <haojian.zhuang@gmail.com>

diff --git a/arch/arm/mach-mmp/irq.c b/arch/arm/mach-mmp/irq.c
index e60c7d98922b9b7876f561cc572a7b90bde28d73..3c71246cd99459993a9b61c638cfb17f432f1159 100644 (file)
--- a/arch/arm/mach-mmp/irq.c
+++ b/arch/arm/mach-mmp/irq.c
@@ -153,10 +153,8 @@ static void icu_mux_irq_demux(unsigned int irq, struct irq_desc *desc)
                status = readl_relaxed(data->reg_status) & ~mask;
                if (status == 0)
                        break;
-               n = find_first_bit(&status, BITS_PER_LONG);
-               while (n < BITS_PER_LONG) {
+               for_each_set_bit(n, &status, BITS_PER_LONG) {
                        generic_handle_irq(icu_data[i].virq_base + n);
-                       n = find_next_bit(&status, BITS_PER_LONG, n + 1);
                }
        }
 }