From 1f666fa4597abc453c0923de99b27a473730ca0c Mon Sep 17 00:00:00 2001 From: Gabor Juhos Date: Sun, 20 Apr 2008 09:10:50 +0000 Subject: [PATCH] remove the clz function, use fls instead SVN-Revision: 10878 --- .../files/arch/mips/atheros/ar5315/irq.c | 3 ++- .../include/asm-mips/mach-atheros/ar531x.h | 23 ------------------- 2 files changed, 2 insertions(+), 24 deletions(-) diff --git a/target/linux/atheros/files/arch/mips/atheros/ar5315/irq.c b/target/linux/atheros/files/arch/mips/atheros/ar5315/irq.c index ed784ba88a..69cb362a00 100644 --- a/target/linux/atheros/files/arch/mips/atheros/ar5315/irq.c +++ b/target/linux/atheros/files/arch/mips/atheros/ar5315/irq.c @@ -20,6 +20,7 @@ #include #include #include +#include #include #include #include @@ -39,7 +40,7 @@ static inline void ar5315_gpio_irq(void) if (!pend) return; - do_IRQ(AR531X_GPIO_IRQ_BASE + 31 - clz(pend)); + do_IRQ(AR531X_GPIO_IRQ_BASE + fls(pend) - 1); } diff --git a/target/linux/atheros/files/include/asm-mips/mach-atheros/ar531x.h b/target/linux/atheros/files/include/asm-mips/mach-atheros/ar531x.h index dccf541550..ba52a2b326 100644 --- a/target/linux/atheros/files/include/asm-mips/mach-atheros/ar531x.h +++ b/target/linux/atheros/files/include/asm-mips/mach-atheros/ar531x.h @@ -11,29 +11,6 @@ extern void (*board_time_init)(void); #endif -/* - * C access to CLZ instruction - * (count leading zeroes). - */ -static inline int clz(unsigned long val) -{ - int ret; - - __asm__ volatile ( - ".set\tnoreorder\n\t" - ".set\tnoat\n\t" - ".set\tmips32\n\t" - "clz\t%0,%1\n\t" - ".set\tmips0\n\t" - ".set\tat\n\t" - ".set\treorder" - : "=r" (ret) - : "r" (val) - ); - - return ret; -} - /* * Atheros CPUs before the AR2315 are using MIPS 4Kc core, later designs are * using MIPS 4KEc R2 core. This makes it easy to determine the board at runtime. -- 2.30.2