drivers/net/hamradio: fix sparse warnings: fix signedness

Fix this sparse warnings:
  drivers/net/hamradio/hdlcdrv.c:274:34: warning: incorrect type in argument 2 (different signedness)
  drivers/net/hamradio/hdlcdrv.c:279:47: warning: incorrect type in argument 2 (different signedness)
  drivers/net/hamradio/hdlcdrv.c:288:39: warning: incorrect type in argument 2 (different signedness)
  drivers/net/hamradio/hdlcdrv.c:300:47: warning: incorrect type in argument 2 (different signedness)

Signed-off-by: Hannes Eder <hannes@hanneseder.net>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 1 insertions, 1 deletions

diff --git a/include/linux/hdlcdrv.h b/include/linux/hdlcdrv.h
index 0821bac62b83..c010b4a785b8 100644
--- a/include/linux/hdlcdrv.h
+++ b/include/linux/hdlcdrv.h
@@ -215,7 +215,7 @@ struct hdlcdrv_state {
 
         struct hdlcdrv_hdlctx {
                 struct hdlcdrv_hdlcbuffer hbuf;
-                long in_hdlc_tx;
+                unsigned long in_hdlc_tx;
                 /*
                  * 0 = send flags
                  * 1 = send txtail (flags)