3 files changed, 6 insertions, 2 deletions

diff --git a/arch/mn10300/kernel/gdb-io-ttysm.c b/arch/mn10300/kernel/gdb-io-ttysm.c
index c5451592d403..e94c25e8ca05 100644
--- a/arch/mn10300/kernel/gdb-io-ttysm.c
+++ b/arch/mn10300/kernel/gdb-io-ttysm.c
@@ -196,6 +196,7 @@ int gdbstub_io_rx_char(unsigned char *_ch, int nonblock)
 try_again:
         /* pull chars out of the buffer */
         ix = gdbstub_rx_outp;
+        barrier();
         if (ix == gdbstub_rx_inp) {
                 if (nonblock)
                         return -EAGAIN;
@@ -207,6 +208,7 @@ try_again:
 
         ch = gdbstub_rx_buffer[ix++];
         st = gdbstub_rx_buffer[ix++];
+        barrier();
         gdbstub_rx_outp = ix & (PAGE_SIZE - 1);
 
         st &= SC01STR_RXF | SC01STR_RBF | SC01STR_FEF | SC01STR_PEF |
diff --git a/arch/mn10300/kernel/time.c b/arch/mn10300/kernel/time.c
index ff492e3b3457..babb7c2ac377 100644
--- a/arch/mn10300/kernel/time.c
+++ b/arch/mn10300/kernel/time.c
@@ -84,11 +84,13 @@ static irqreturn_t timer_interrupt(int irq, void *dev_id)
                 /* advance the kernel's time tracking system */
                 profile_tick(CPU_PROFILING);
                 do_timer(1);
-                update_process_times(user_mode(get_irq_regs()));
                 check_rtc_time();
         }
 
         write_sequnlock(&xtime_lock);
+
+        update_process_times(user_mode(get_irq_regs()));
+
         return IRQ_HANDLED;
 }
 
diff --git a/arch/mn10300/kernel/traps.c b/arch/mn10300/kernel/traps.c
index 8b9dc6d9dcc6..fcb9a03d46a8 100644
--- a/arch/mn10300/kernel/traps.c
+++ b/arch/mn10300/kernel/traps.c
@@ -391,7 +391,7 @@ static asmlinkage void unsupported_syscall(struct pt_regs *regs,
         if (code == EXCEP_SYSCALL15 && !user_mode(regs)) {
                 if (report_bug(regs->pc, regs) == BUG_TRAP_TYPE_BUG) {
 #ifdef CONFIG_GDBSTUB
-                        __gdbstub_bug_trap();
+                        gdbstub_intercept(regs, code);
 #endif
                 }
         }