drivers/net/ppp*.c: fix sparse warnings: fix signedness

Fix this sparse warnings:
  drivers/net/ppp_generic.c:919:43: warning: incorrect type in argument 1 (different signedness)
  drivers/net/pppoe.c:1195:43: warning: incorrect type in argument 1 (different signedness)
  drivers/net/pppol2tp.c:2666:43: warning: incorrect type in argument 1 (different signedness)

Signed-off-by: Hannes Eder <hannes@hanneseder.net>
Acked-by: Cyrill Gorcunov <gorcunov@openvz.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 1 insertions, 1 deletions

diff --git a/drivers/net/ppp_generic.c b/drivers/net/ppp_generic.c
index fddc8493f35c..81e7fcced4b9 100644
--- a/drivers/net/ppp_generic.c
+++ b/drivers/net/ppp_generic.c
@@ -183,7 +183,7 @@ static atomic_t ppp_unit_count = ATOMIC_INIT(0);
 static atomic_t channel_count = ATOMIC_INIT(0);
 
 /* per-net private data for this module */
-static unsigned int ppp_net_id;
+static int ppp_net_id;
 struct ppp_net {
         /* units to ppp mapping */
         struct idr units_idr;