Merge master.kernel.org:/pub/scm/linux/kernel/git/lethal/sh-2.6

* master.kernel.org:/pub/scm/linux/kernel/git/lethal/sh-2.6: (29 commits)
  sh: Fixup SH-2 BUG() trap handling.
  sh: Use early_param() for earlyprintk parsing.
  sh: Fix .empty_zero_page alignment for PAGE_SIZE > 4096.
  sh: Fixup .data.page_aligned.
  sh: Hook up SH7722 scif ipr interrupts.
  sh: Fixup sh_bios() trap handling.
  sh: SH-MobileR SH7722 CPU support.
  sh: Fixup dma_cache_sync() callers.
  sh: Convert remaining remap_area_pages() users to ioremap_page_range().
  sh: Fixup kernel_execve() for syscall cleanups.
  sh: Fix get_wchan().
  sh: BUG() handling through trapa vector.
  rtc: rtc-sh: alarm support.
  rtc: rtc-sh: fix rtc for out-by-one for the month.
  sh: Kill off unused SE7619 I/O ops.
  serial: sh-sci: Shut up various sci_rxd_in() gcc4 warnings.
  sh: Split out atomic ops logically.
  sh: Fix Solution Engine 7619 build.
  sh: Trivial build fixes for SH-2 support.
  sh: IPR IRQ updates for SH7619/SH7206.
  ...

1 files changed, 13 insertions, 2 deletions

diff --git a/arch/sh/kernel/process.c b/arch/sh/kernel/process.c
index f3e2631be144..486c06e18033 100644
--- a/arch/sh/kernel/process.c
+++ b/arch/sh/kernel/process.c
@@ -470,9 +470,10 @@ unsigned long get_wchan(struct task_struct *p)
          */
         pc = thread_saved_pc(p);
         if (in_sched_functions(pc)) {
-                schedule_frame = ((unsigned long *)(long)p->thread.sp)[1];
-                return (unsigned long)((unsigned long *)schedule_frame)[1];
+                schedule_frame = (unsigned long)p->thread.sp;
+                return ((unsigned long *)schedule_frame)[21];
         }
+
         return pc;
 }
 
@@ -498,6 +499,16 @@ asmlinkage void break_point_trap_software(unsigned long r4, unsigned long r5,
 {
         struct pt_regs *regs = RELOC_HIDE(&__regs, 0);
 
+        /* Rewind */
         regs->pc -= 2;
+
+#ifdef CONFIG_BUG
+        if (__kernel_text_address(instruction_pointer(regs))) {
+                u16 insn = *(u16 *)instruction_pointer(regs);
+                if (insn == TRAPA_BUG_OPCODE)
+                        handle_BUG(regs);
+        }
+#endif
+
         force_sig(SIGTRAP, current);
 }