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authorMarkos Chandras <markos.chandras@imgtec.com>2013-12-12 16:21:00 +0000
committerRalf Baechle <ralf@linux-mips.org>2014-03-26 23:09:17 +0100
commitac85227f7637cfb0d811519b8253c454d0d0a159 (patch)
tree7f9da2f3f1efa1c7b46310c658b1f0679d35984e /arch/mips/lib
parentc1771216ab48bb077cee30e6d197a5a55f707101 (diff)
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op-kernel-dev-ac85227f7637cfb0d811519b8253c454d0d0a159.tar.gz
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 <markos.chandras@imgtec.com>
Diffstat (limited to 'arch/mips/lib')
-rw-r--r--arch/mips/lib/csum_partial.S9
1 files changed, 6 insertions, 3 deletions
diff --git a/arch/mips/lib/csum_partial.S b/arch/mips/lib/csum_partial.S
index a6adffb..5d73d0d 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 <linux/errno.h>
#include <asm/asm.h>
@@ -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)
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