# \[PATCH\] powerpc/code-patching: Return error on patch\_branch() out-of-range failure

- From: Christophe Leroy \<hidden\>
- Date: 2021-09-03 08:23:20 
- List: linuxppc-dev
- Page: https://ratatoskr.run/linuxppc-dev/2021/09/1496566
- Thread: https://ratatoskr.run/linuxppc-dev/2021/09/1496566/t.md

```text
Do not silentely ignore a failure of create_branch() in
patch_branch(). Return -ERANGE.

Signed-off-by: Christophe Leroy <redacted>
---
 arch/powerpc/lib/code-patching.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/arch/powerpc/lib/code-patching.c b/arch/powerpc/lib/code-patching.c
index f9a3019e37b4..0bc9cc0416b8 100644
--- a/arch/powerpc/lib/code-patching.c
+++ b/arch/powerpc/lib/code-patching.c
@@ -202,7 +202,9 @@ int patch_branch(u32 *addr, unsigned long target, int flags)
 {
 	struct ppc_inst instr;
 
-	create_branch(&instr, addr, target, flags);
+	if (create_branch(&instr, addr, target, flags))
+		return -ERANGE;
+
 	return patch_instruction(addr, instr);
 }
 
-- 
2.25.0

```