kgdb,x86_64: fix compile warning found with sparse

Fix sparse warning:

arch/x86/kernel/kgdb.c:123:9: warning: switch with no cases

Reported-by: Namhyung Kim <namhyung@gmail.com>
Signed-off-by: Jason Wessel <jason.wessel@windriver.com>

diff --git a/arch/x86/kernel/kgdb.c b/arch/x86/kernel/kgdb.c
index a413000..3c2fb0f 100644 (file)
--- a/arch/x86/kernel/kgdb.c
+++ b/arch/x86/kernel/kgdb.c
@@ -121,8 +121,8 @@ char *dbg_get_reg(int regno, void *mem, struct pt_regs *regs)
                memcpy(mem, (void *)regs + dbg_reg_def[regno].offset,
                       dbg_reg_def[regno].size);
 
-       switch (regno) {
 #ifdef CONFIG_X86_32
+       switch (regno) {
        case GDB_SS:
                if (!user_mode_vm(regs))
                        *(unsigned long *)mem = __KERNEL_DS;
@@ -135,8 +135,8 @@ char *dbg_get_reg(int regno, void *mem, struct pt_regs *regs)
        case GDB_FS:
                *(unsigned long *)mem = 0xFFFF;
                break;
-#endif
        }
+#endif
        return dbg_reg_def[regno].name;
 }