V4L/DVB (12731): cx25821: Add missing include
/home/v4l/master/v4l/cx25821-audups11.c:99: error: implicit declaration of function 'lock_kernel'
/home/v4l/master/v4l/cx25821-audups11.c:112: error: implicit declaration of function 'unlock_kernel'
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
diff --git a/drivers/staging/cx25821/cx25821.h b/drivers/staging/cx25821/cx25821.h
index 074ea34..578cdd5 100644
--- a/drivers/staging/cx25821/cx25821.h
+++ b/drivers/staging/cx25821/cx25821.h
@@ -32,6 +32,7 @@
#include <linux/delay.h>
#include <linux/sched.h>
#include <linux/kdev_t.h>
+#include <linux/smp_lock.h>
#include <media/v4l2-common.h>
#include <media/v4l2-device.h>