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| author | Joe MacDonald <joe.macdonald@windriver.com> | 2012-08-21 08:22:28 (GMT) |
|---|---|---|
| committer | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2012-09-10 04:37:31 (GMT) |
| commit | 6b5e7229bbd59f0cfce7015fd46736fc93d8c8c3 (patch) | |
| tree | 123e1d096d08b19db3ec32e9272a8a81335fdc7c /arch/powerpc | |
| parent | 11f63d3fb9c4257b1f005db8d11deba9f992bdf6 (diff) | |
| download | linux-6b5e7229bbd59f0cfce7015fd46736fc93d8c8c3.tar.xz | |
powerpc/mm: Match variable types to API
sys_subpage_prot() takes an unsigned long for 'addr' then does some stuff
with it and the result is stored in a signed int, i, which is eventually
used as the size parameter in a copy_from_user call. Update 'i' to be an
unsigned long as well and since 'nw' is used in a size_t context which,
depending on whether this is 32- or 64-bit may be unsigned int or unsigned
long, switch that to a size_t and always be right.
Finally, since we're in the neighbourhood, make the same changes to
subpage_prot_clear().
Cc: Paul Mackerras <paulus@samba.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Joe MacDonald <joe.macdonald@windriver.com>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Acked-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'arch/powerpc')
| -rw-r--r-- | arch/powerpc/mm/subpage-prot.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/arch/powerpc/mm/subpage-prot.c b/arch/powerpc/mm/subpage-prot.c index e4f8f1f..7c415dd 100644 --- a/arch/powerpc/mm/subpage-prot.c +++ b/arch/powerpc/mm/subpage-prot.c @@ -95,7 +95,8 @@ static void subpage_prot_clear(unsigned long addr, unsigned long len) struct mm_struct *mm = current->mm; struct subpage_prot_table *spt = &mm->context.spt; u32 **spm, *spp; - int i, nw; + unsigned long i; + size_t nw; unsigned long next, limit; down_write(&mm->mmap_sem); @@ -144,7 +145,8 @@ long sys_subpage_prot(unsigned long addr, unsigned long len, u32 __user *map) struct mm_struct *mm = current->mm; struct subpage_prot_table *spt = &mm->context.spt; u32 **spm, *spp; - int i, nw; + unsigned long i; + size_t nw; unsigned long next, limit; int err; |