1 files changed, 1 insertions, 1 deletions

diff --git a/drivers/char/riscom8.h b/drivers/char/riscom8.h
index 6317aade201a..9cc1313d5e67 100644
--- a/drivers/char/riscom8.h
+++ b/drivers/char/riscom8.h
@@ -71,7 +71,7 @@ struct riscom_port {
         struct tty_struct       * tty;
         int                     count;
         int                     blocked_open;
-        long                    event; /* long req'd for set_bit --RR */
+        unsigned long           event; /* long req'd for set_bit --RR */
         int                     timeout;
         int                     close_delay;
         unsigned char           * xmit_buf;