1 files changed, 1 insertions, 1 deletions

diff --git a/drivers/net/ppp_generic.c b/drivers/net/ppp_generic.c
index c6de566188e4..0986f6c843e6 100644
--- a/drivers/net/ppp_generic.c
+++ b/drivers/net/ppp_generic.c
@@ -83,7 +83,7 @@ struct ppp_file {
         int             dead;           /* unit/channel has been shut down */
 };
 
-#define PF_TO_X(pf, X)          ((X *)((char *)(pf) - offsetof(X, file)))
+#define PF_TO_X(pf, X)          container_of(pf, X, file)
 
 #define PF_TO_PPP(pf)           PF_TO_X(pf, struct ppp)
 #define PF_TO_CHANNEL(pf)       PF_TO_X(pf, struct channel)