[RFC][PATCH 05/14] ia64: csum_partial_copy_nocheck(): don't abuse csum_partial_copy_from_user()

Al Viro
2020-03-27T23:31:43Z

Just inline the call and use memcpy() instead of __copy_from_user() and
note that the tail is precisely ia64 csum_partial().

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
---
arch/ia64/lib/csum_partial_copy.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/ia64/lib/csum_partial_copy.c b/arch/ia64/lib/csum_partial_copy.c
index bf9396b1ed32..9ab570d0f756 100644
--- a/arch/ia64/lib/csum_partial_copy.c
+++ b/arch/ia64/lib/csum_partial_copy.c
@@ -134,8 +134,8 @@ EXPORT_SYMBOL(csum_partial_copy_from_user);
__wsum
csum_partial_copy_nocheck(const void *src, void *dst, int len, __wsum sum)
{
- return csum_partial_copy_from_user((__force const void __user *)src,
- dst, len, sum, NULL);
+ memcpy(dst, src, len);
+ return csum_partial(dst, len, sum);
}

EXPORT_SYMBOL(csum_partial_copy_nocheck);
--
2.11.0