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/n_r3964.c b/drivers/char/n_r3964.c
index 65f2d3a..14557a4 100644
--- a/drivers/char/n_r3964.c
+++ b/drivers/char/n_r3964.c
@@ -1088,13 +1088,13 @@
 			/* block until there is a message: */
 			add_wait_queue(&pInfo->read_wait, &wait);
 repeat:
-			current->state = TASK_INTERRUPTIBLE;
+			__set_current_state(TASK_INTERRUPTIBLE);
 			pMsg = remove_msg(pInfo, pClient);
 			if (!pMsg && !signal_pending(current)) {
 				schedule();
 				goto repeat;
 			}
-			current->state = TASK_RUNNING;
+			__set_current_state(TASK_RUNNING);
 			remove_wait_queue(&pInfo->read_wait, &wait);
 		}