ARC: Fix thread_saved_pc()

The old implementation assumed that SP at the time of __switch_to() is
right above pt_regs which is almost certainly not the case as there will
be some stack build up between entry into kernel and leading up to
__switch_to

Signed-off-by: Vineet Gupta <vgupta@synopsys.com>

1 files changed, 2 insertions, 3 deletions

diff --git a/arch/arc/include/asm/processor.h b/arch/arc/include/asm/processor.h
index 88398caa3989..52312cb5dbe2 100644
--- a/arch/arc/include/asm/processor.h
+++ b/arch/arc/include/asm/processor.h
@@ -47,9 +47,6 @@ struct thread_struct {
 /* Forward declaration, a strange C thing */
 struct task_struct;
 
-/* Return saved PC of a blocked thread  */
-unsigned long thread_saved_pc(struct task_struct *t);
-
 #define task_pt_regs(p) \
         ((struct pt_regs *)(THREAD_SIZE + (void *)task_stack_page(p)) - 1)
 
@@ -86,6 +83,8 @@ unsigned long thread_saved_pc(struct task_struct *t);
 #define TSK_K_BLINK(tsk)        TSK_K_REG(tsk, 4)
 #define TSK_K_FP(tsk)           TSK_K_REG(tsk, 0)
 
+#define thread_saved_pc(tsk)    TSK_K_BLINK(tsk)
+
 extern void start_thread(struct pt_regs * regs, unsigned long pc,
                          unsigned long usp);