drivers/char: use __set_current_state()

use __set_current_state(TASK_*) instead of current->state = TASK_*,

Signed-off-by: Milind Arun Choudhary <milindchoudhary@gmail.com>
Cc: Jiri Slaby <jirislaby@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/drivers/char/serial167.c b/drivers/char/serial167.c
index 5fd314a..c585b47 100644
--- a/drivers/char/serial167.c
+++ b/drivers/char/serial167.c
@@ -1892,7 +1892,7 @@
 #endif
 		    schedule();
 	}
-	current->state = TASK_RUNNING;
+	__set_current_state(TASK_RUNNING);
 	remove_wait_queue(&info->open_wait, &wait);
 	if (!tty_hung_up_p(filp)) {
 		info->count++;