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powerpc/sparse: Constify the address pointer in __get_user_check()

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In __get_user_check, we create an intermediate pointer for the
user address we're about to fetch. We currently don't tag this
pointer as const. Make it const, as we are simply dereferencing
it, and it's scope is limited to the __get_user_check macro.

Signed-off-by: Daniel Axtens <dja@axtens.net>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This commit is contained in:
Daniel Axtens 2017-01-30 17:41:53 +11:00 committed by Michael Ellerman
parent 0b1c764339
commit f84ed59a61
1 changed files with 1 additions and 1 deletions
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2
arch/powerpc/include/asm/uaccess.h
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@ -274,7 +274,7 @@ do { \
({ \
long __gu_err = -EFAULT; \
unsigned long __gu_val = 0; \
__typeof__(*(ptr)) __user *__gu_addr = (ptr); \
const __typeof__(*(ptr)) __user *__gu_addr = (ptr); \
might_fault(); \
if (access_ok(VERIFY_READ, __gu_addr, (size))) \
__get_user_size(__gu_val, __gu_addr, (size), __gu_err); \