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remove the clz function, use fls instead

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SVN-Revision: 10878
This commit is contained in:
Gabor Juhos 2008-04-20 09:10:50 +00:00
parent c55299adb4
commit 1f666fa459
2 changed files with 2 additions and 24 deletions
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3
target/linux/atheros/files/arch/mips/atheros/ar5315/irq.c
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@ -20,6 +20,7 @@
#include <linux/kernel.h>
#include <linux/reboot.h>
#include <linux/interrupt.h>
#include <linux/bitops.h>
#include <asm/bootinfo.h>
#include <asm/irq_cpu.h>
#include <asm/io.h>
@ -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);
}

23
target/linux/atheros/files/include/asm-mips/mach-atheros/ar531x.h
View file

@ -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.