1 files changed, 4 insertions, 0 deletions

diff --git a/include/linux/tty.h b/include/linux/tty.h
index 38fcc0574ba9..ad98b4376968 100644
--- a/include/linux/tty.h
+++ b/include/linux/tty.h
@@ -39,10 +39,14 @@ struct tty_buffer {
         int size;
         int commit;
         int read;
+        int flags;
         /* Data points here */
         unsigned long data[0];
 };
 
+/* Values for .flags field of tty_buffer */
+#define TTYB_NORMAL     1       /* buffer has no flags buffer */
+
 static inline unsigned char *char_buf_ptr(struct tty_buffer *b, int ofs)
 {
         return ((unsigned char *)b->data) + ofs;