[PATCH] x86/ptrace: Mark expected switch fall-through

[Gustavo A. R. Silva]

Mark switch cases where we are expecting to fall through.

Fix the following warning (Building: allnoconfig i386):

arch/x86/kernel/ptrace.c:202:6: warning: this statement may fall through 
[-Wimplicit-fallthrough=]
   if (unlikely(value == 0))
      ^
arch/x86/kernel/ptrace.c:206:2: note: here
  default:
  ^~~~~~~

Signed-off-by: Gustavo A. R. Silva <gust...@embeddedor.com>
---
 arch/x86/kernel/ptrace.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/x86/kernel/ptrace.c b/arch/x86/kernel/ptrace.c
index 0fdbe89d0754..3c5bbe8e4120 100644
--- a/arch/x86/kernel/ptrace.c
+++ b/arch/x86/kernel/ptrace.c
@@ -201,6 +201,7 @@ static int set_segment_reg(struct task_struct *task,
        case offsetof(struct user_regs_struct, ss):
                if (unlikely(value == 0))
                        return -EIO;
+               /* Else, fall through */
 
        default:
                *pt_regs_access(task_pt_regs(task), offset) = value;
-- 
2.22.0