X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=drivers%2Fchar%2Fn_hdlc.c;h=c68118efad844940e7977f4e30afa5f3c694977d;hb=3d2c978e0cd8b1157f9eebd13062d61fb7a75ad5;hp=1c43c8cdee259f18d3ffbf0e063be81dc5c2f3f2;hpb=4c0bccbe66ffe34f7bc88d29c345f9a7888656eb;p=firefly-linux-kernel-4.4.55.git

diff --git a/drivers/char/n_hdlc.c b/drivers/char/n_hdlc.c
index 1c43c8cdee25..c68118efad84 100644
--- a/drivers/char/n_hdlc.c
+++ b/drivers/char/n_hdlc.c
@@ -97,6 +97,7 @@
 #include <linux/slab.h>
 #include <linux/tty.h>
 #include <linux/errno.h>
+#include <linux/smp_lock.h>
 #include <linux/string.h>	/* used in new tty drivers */
 #include <linux/signal.h>	/* used in new tty drivers */
 #include <linux/if.h>