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xtensa: fix prefetch in the raw_copy_to_user 

'from' is the input buffer, it should be prefetched with prefetch, not
prefetchw.

Tested-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Max Filippov 2017-04-04 13:26:29 -07:00 committed by Al Viro
parent 3a0e75adec
commit 7d4914db8f
1 changed files with 1 additions and 1 deletions
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2
arch/xtensa/include/asm/uaccess.h
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@ -245,7 +245,7 @@ raw_copy_from_user(void *to, const void __user *from, unsigned long n)
static inline unsigned long
raw_copy_to_user(void __user *to, const void *from, unsigned long n)
{
prefetchw(from);
prefetch(from);
return __xtensa_copy_user((__force void *)to, from, n);
}
#define INLINE_COPY_FROM_USER