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sparc32: fix copy_from_user() 

Cc: stable@vger.kernel.org
Acked-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro 2016-08-22 00:23:07 -04:00
parent 6e050503a1
commit 917400cecb
1 changed files with 3 additions and 1 deletions
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4
arch/sparc/include/asm/uaccess_32.h
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@ -269,8 +269,10 @@ static inline unsigned long copy_from_user(void *to, const void __user *from, un
if (!__builtin_constant_p(n)) if (!__builtin_constant_p(n))
check_object_size(to, n, false); check_object_size(to, n, false);
return __copy_user((__force void __user *) to, from, n); return __copy_user((__force void __user *) to, from, n);
} else } else {
memset(to, 0, n);
return n; return n;
}
} }
static inline unsigned long __copy_from_user(void *to, const void __user *from, unsigned long n) static inline unsigned long __copy_from_user(void *to, const void __user *from, unsigned long n)