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-rw-r--r--arch/powerpc/lib/code-patching.c14
1 files changed, 10 insertions, 4 deletions
diff --git a/arch/powerpc/lib/code-patching.c b/arch/powerpc/lib/code-patching.c
index 7c975d4..17e5b23 100644
--- a/arch/powerpc/lib/code-patching.c
+++ b/arch/powerpc/lib/code-patching.c
@@ -13,17 +13,23 @@
#include <linux/mm.h>
#include <asm/page.h>
#include <asm/code-patching.h>
+#include <asm/uaccess.h>
-void patch_instruction(unsigned int *addr, unsigned int instr)
+int patch_instruction(unsigned int *addr, unsigned int instr)
{
- *addr = instr;
+ int err;
+
+ __put_user_size(instr, addr, 4, err);
+ if (err)
+ return err;
asm ("dcbst 0, %0; sync; icbi 0,%0; sync; isync" : : "r" (addr));
+ return 0;
}
-void patch_branch(unsigned int *addr, unsigned long target, int flags)
+int patch_branch(unsigned int *addr, unsigned long target, int flags)
{
- patch_instruction(addr, create_branch(addr, target, flags));
+ return patch_instruction(addr, create_branch(addr, target, flags));
}
unsigned int create_branch(const unsigned int *addr,