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authorAkinobu Mita <akinobu.mita@gmail.com>2011-03-23 16:42:15 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2011-03-23 19:46:21 -0700
commit3fca5af7860f87eb2cd706c2d7dda4ad03230a07 (patch)
treef89b0df7317c250ccd6998fa2b1fa2f91ade4353 /arch
parentf312eff8164879e04923d41e9dd23e7850937d85 (diff)
m68k: remove inline asm from minix_find_first_zero_bit
As a preparation for moving minix bit operations from asm/bitops.h to architecture independent code in minix filesystem, this removes inline asm from minix_find_first_zero_bit() for m68k. Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Roman Zippel <zippel@linux-m68k.org> Cc: Andreas Schwab <schwab@linux-m68k.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch')
-rw-r--r--arch/m68k/include/asm/bitops_mm.h10
1 files changed, 3 insertions, 7 deletions
diff --git a/arch/m68k/include/asm/bitops_mm.h b/arch/m68k/include/asm/bitops_mm.h
index 3d16871402ad..a403b5e69aab 100644
--- a/arch/m68k/include/asm/bitops_mm.h
+++ b/arch/m68k/include/asm/bitops_mm.h
@@ -330,23 +330,19 @@ static inline int __fls(int x)
static inline int minix_find_first_zero_bit(const void *vaddr, unsigned size)
{
const unsigned short *p = vaddr, *addr = vaddr;
- int res;
unsigned short num;
if (!size)
return 0;
size = (size >> 4) + ((size & 15) > 0);
- while (*p++ == 0xffff)
- {
+ while (*p++ == 0xffff) {
if (--size == 0)
return (p - addr) << 4;
}
- num = ~*--p;
- __asm__ __volatile__ ("bfffo %1{#16,#16},%0"
- : "=d" (res) : "d" (num & -num));
- return ((p - addr) << 4) + (res ^ 31);
+ num = *--p;
+ return ((p - addr) << 4) + ffz(num);
}
#define minix_test_and_set_bit(nr, addr) __test_and_set_bit((nr) ^ 16, (unsigned long *)(addr))

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