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bfin: switch to RAW_COPY_USER 

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
hifive-unleashed-5.1
Al Viro 2017-03-28 00:36:07 -04:00
parent 72d6f65dd7
commit 50e9ab915a
2 changed files with 5 additions and 22 deletions
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1
arch/blackfin/Kconfig
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@ -41,6 +41,7 @@ config BLACKFIN
select MODULES_USE_ELF_RELA
select HAVE_DEBUG_STACKOVERFLOW
select HAVE_NMI
select ARCH_HAS_RAW_COPY_USER
config GENERIC_CSUM
def_bool y

26
arch/blackfin/include/asm/uaccess.h
View File

@ -144,41 +144,23 @@ static inline int bad_user_access_length(void)
: "a" (__ptr(ptr))); \
})
#define __copy_to_user_inatomic __copy_to_user
#define __copy_from_user_inatomic __copy_from_user
static inline unsigned long __must_check
__copy_from_user(void *to, const void __user *from, unsigned long n)
raw_copy_from_user(void *to, const void __user *from, unsigned long n)
{
memcpy(to, (const void __force *)from, n);
return 0;
}
static inline unsigned long __must_check
__copy_to_user(void __user *to, const void *from, unsigned long n)
raw_copy_to_user(void __user *to, const void *from, unsigned long n)
{
memcpy((void __force *)to, from, n);
SSYNC();
return 0;
}
static inline unsigned long __must_check
copy_from_user(void *to, const void __user *from, unsigned long n)
{
if (likely(access_ok(VERIFY_READ, from, n)))
return __copy_from_user(to, from, n);
memset(to, 0, n);
return n;
}
static inline unsigned long __must_check
copy_to_user(void __user *to, const void *from, unsigned long n)
{
if (likely(access_ok(VERIFY_WRITE, to, n)))
return __copy_to_user(to, from, n);
return n;
}
#define INLINE_COPY_FROM_USER
#define INLINE_COPY_TO_USER
/*
* Copy a null terminated string from userspace.
*/