kgdb,mips: remove unused kgdb_cpu_doing_single_step operations

The mips kgdb specific code does not support software or HW single
stepping so it should not implement

Signed-off-by: Jason Wessel <jason.wessel@windriver.com>
Signed-off-by: Dongdong Deng <dongdong.deng@windriver.com>
Acked-by: Ralf Baechle <ralf@linux-mips.org>
CC: linux-mips@linux-mips.org

1 files changed, 1 insertions, 7 deletions

diff --git a/arch/mips/kernel/kgdb.c b/arch/mips/kernel/kgdb.c
index 5e76c2daa7f4..1f4e2fa64140 100644
--- a/arch/mips/kernel/kgdb.c
+++ b/arch/mips/kernel/kgdb.c
@@ -329,7 +329,7 @@ static struct notifier_block kgdb_notifier = {
 };
 
 /*
- * Handle the 's' and 'c' commands
+ * Handle the 'c' command
  */
 int kgdb_arch_handle_exception(int vector, int signo, int err_code,
                                char *remcom_in_buffer, char *remcom_out_buffer,
@@ -337,20 +337,14 @@ int kgdb_arch_handle_exception(int vector, int signo, int err_code,
 {
         char *ptr;
         unsigned long address;
-        int cpu = smp_processor_id();
 
         switch (remcom_in_buffer[0]) {
-        case 's':
         case 'c':
                 /* handle the optional parameter */
                 ptr = &remcom_in_buffer[1];
                 if (kgdb_hex2long(&ptr, &address))
                         regs->cp0_epc = address;
 
-                atomic_set(&kgdb_cpu_doing_single_step, -1);
-                if (remcom_in_buffer[0] == 's')
-                        atomic_set(&kgdb_cpu_doing_single_step, cpu);
-
                 return 0;
         }