From ac85227f7637cfb0d811519b8253c454d0d0a159 Mon Sep 17 00:00:00 2001 From: Markos Chandras Date: Thu, 12 Dec 2013 16:21:00 +0000 Subject: MIPS: checksum: Split the 'copy_user' symbol The 'copy_user' symbol can be used to copy from or to userland so we will use two different symbols for these operations. This makes no difference in the existing code, but when the core is operating in EVA mode, different instructions need to be used to read and write to userland address space. The old function has also been renamed to 'copy_kernel' to denote that it is suitable for copy data to and from kernel space. Signed-off-by: Markos Chandras --- arch/mips/lib/csum_partial.S | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-) (limited to 'arch/mips/lib') diff --git a/arch/mips/lib/csum_partial.S b/arch/mips/lib/csum_partial.S index a6adffbb4e5f..5d73d0d704a3 100644 --- a/arch/mips/lib/csum_partial.S +++ b/arch/mips/lib/csum_partial.S @@ -8,6 +8,7 @@ * Copyright (C) 1998, 1999 Ralf Baechle * Copyright (C) 1999 Silicon Graphics, Inc. * Copyright (C) 2007 Maciej W. Rozycki + * Copyright (C) 2014 Imagination Technologies Ltd. */ #include #include @@ -296,7 +297,7 @@ LEAF(csum_partial) * checksum and copy routines based on memcpy.S * * csum_partial_copy_nocheck(src, dst, len, sum) - * __csum_partial_copy_user(src, dst, len, sum, errp) + * __csum_partial_copy_kernel(src, dst, len, sum, errp) * * See "Spec" in memcpy.S for details. Unlike __copy_user, all * function in this file use the standard calling convention. @@ -396,7 +397,9 @@ LEAF(csum_partial) .set at=v1 #endif -LEAF(__csum_partial_copy_user) +LEAF(__csum_partial_copy_kernel) +FEXPORT(__csum_partial_copy_to_user) +FEXPORT(__csum_partial_copy_from_user) PTR_ADDU AT, src, len /* See (1) above. */ #ifdef CONFIG_64BIT move errptr, a4 @@ -757,4 +760,4 @@ EXC( lbu t1, 0(src), .Ll_exc) jr ra sw v1, (errptr) .set pop - END(__csum_partial_copy_user) + END(__csum_partial_copy_kernel) -- cgit v1.2.3