[PATCH 3.2 120/140] m32r: fix 'fix breakage from "m32r: use generic ptrace_resume code"' fallout

Ben Hutchings
2018-02-28T17:39:14Z

From: Geert Uytterhoeven <geert@linux-m68k.org>

commit a6b202979661eb32646048aeaad7be7b70c2cd22 upstream.

Commit acdc0d5ef9dd ('m32r: fix breakage from "m32r: use generic
ptrace_resume code"') tried to fix a problem in commit e34112e3966fc
("m32r: use generic ptrace_resume code") by returning values in a
function returning void, causing:

arch/m32r/kernel/ptrace.c: In function 'user_enable_single_step':
arch/m32r/kernel/ptrace.c:594:3: warning: 'return' with a value, in function returning void [enabled by default]
arch/m32r/kernel/ptrace.c:598:3: warning: 'return' with a value, in function returning void [enabled by default]
arch/m32r/kernel/ptrace.c:601:3: warning: 'return' with a value, in function returning void [enabled by default]
arch/m32r/kernel/ptrace.c:604:2: warning: 'return' with a value, in function returning void [enabled by default]

Remove the unneeded return values.

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Hirokazu Takata <takata@linux-m32r.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---
arch/m32r/kernel/ptrace.c | 7 +++----
1 file changed, 3 insertions(+), 4 deletions(-)

--- a/arch/m32r/kernel/ptrace.c
+++ b/arch/m32r/kernel/ptrace.c
@@ -592,17 +592,16 @@ void user_enable_single_step(struct task

if (access_process_vm(child, pc&~3, &insn, sizeof(insn), 0)
!= sizeof(insn))
- return -EIO;
+ return;

compute_next_pc(insn, pc, &next_pc, child);
if (next_pc & 0x80000000)
- return -EIO;
+ return;

if (embed_debug_trap(child, next_pc))
- return -EIO;
+ return;

invalidate_cache();
- return 0;
}

void user_disable_single_step(struct task_struct *child)