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powerpc: make __ffs return unsigned long

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I'm seeing a build warning in mm/nobootmem.c after removing
bootmem:

mm/nobootmem.c: In function '__free_pages_memory':
include/linux/kernel.h:713:17: warning: comparison of distinct pointer types lacks a cast [enabled by default]
  (void) (&_min1 == &_min2);  \
                 ^
mm/nobootmem.c:90:11: note: in expansion of macro 'min'
   order = min(MAX_ORDER - 1UL, __ffs(start));
           ^

The rest of the worlds seems to define __ffs as returning unsigned long,
so lets do that.

Signed-off-by: Anton Blanchard <anton@samba.org>
Tested-by: Emil Medve <Emilian.Medve@Freescale.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This commit is contained in:
Anton Blanchard 2014-09-17 22:15:37 +10:00 committed by Michael Ellerman
parent 21098b9e07
commit 6e4c632cdf
2 changed files with 2 additions and 2 deletions
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2
arch/powerpc/include/asm/bitops.h
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@ -213,7 +213,7 @@ static __inline__ unsigned long ffz(unsigned long x)
return __ilog2(x & -x);
}
static __inline__ int __ffs(unsigned long x)
static __inline__ unsigned long __ffs(unsigned long x)
{
return __ilog2(x & -x);
}

2
arch/powerpc/sysdev/fsl_pci.c
View File

@ -152,7 +152,7 @@ static int setup_one_atmu(struct ccsr_pci __iomem *pci,
flags |= 0x10000000; /* enable relaxed ordering */
for (i = 0; size > 0; i++) {
unsigned int bits = min(ilog2(size),
unsigned int bits = min_t(u32, ilog2(size),
__ffs(pci_addr | phys_addr));
if (index + i >= 5)