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Kirill Smelkov
linux
Commits
d0aab922
Commit
d0aab922
authored
Apr 27, 2009
by
Ralf Baechle
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MIPS: Make access_ok() sideeffect proof.
Signed-off-by:
Ralf Baechle
<
ralf@linux-mips.org
>
parent
1699e5c9
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arch/mips/include/asm/uaccess.h
arch/mips/include/asm/uaccess.h
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arch/mips/include/asm/uaccess.h
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d0aab922
...
...
@@ -104,11 +104,21 @@
#define __access_mask get_fs().seg
#define __access_ok(addr, size, mask) \
(((signed long)((mask) & ((addr) | ((addr) + (size)) | __ua_size(size)))) == 0)
#define __access_ok(addr, size, mask) \
({ \
const volatile void __user *__up = addr; \
unsigned long __addr = (unsigned long) __up; \
unsigned long __size = size; \
unsigned long __mask = mask; \
unsigned long __ok; \
\
__ok = (signed long)(__mask & (__addr | (__addr + __size) | \
__ua_size(__size))); \
__ok == 0; \
})
#define access_ok(type, addr, size) \
likely(__access_ok((
unsigned long)(
addr), (size), __access_mask))
likely(__access_ok((addr), (size), __access_mask))
/*
* put_user: - Write a simple value into user space.
...
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