um: Get rid of thread_struct->saved_task

As we have a sane show_stack() now, we can drop
the ->saved_task hack.

Signed-off-by: Richard Weinberger <richard@nod.at>

1 files changed, 2 insertions, 13 deletions

diff --git a/arch/um/kernel/process.c b/arch/um/kernel/process.c
index bbcef522bcb1..eecc4142764c 100644
--- a/arch/um/kernel/process.c
+++ b/arch/um/kernel/process.c
@@ -82,19 +82,8 @@ void *__switch_to(struct task_struct *from, struct task_struct *to)
         to->thread.prev_sched = from;
         set_current(to);
 
-        do {
-                current->thread.saved_task = NULL;
-
-                switch_threads(&from->thread.switch_buf,
-                               &to->thread.switch_buf);
-
-                arch_switch_to(current);
-
-                if (current->thread.saved_task)
-                        show_regs(&(current->thread.regs));
-                to = current->thread.saved_task;
-                from = current;
-        } while (current->thread.saved_task);
+        switch_threads(&from->thread.switch_buf, &to->thread.switch_buf);
+        arch_switch_to(current);
 
         return current->thread.prev_sched;
 }