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-rw-r--r--net/ipv4/ip_options.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/net/ipv4/ip_options.c b/net/ipv4/ip_options.c
index e25ee7c8bdd..a0d0d9d9b87 100644
--- a/net/ipv4/ip_options.c
+++ b/net/ipv4/ip_options.c
@@ -9,6 +9,8 @@
*
*/
+#define pr_fmt(fmt) "IPv4: " fmt
+
#include <linux/capability.h>
#include <linux/module.h>
#include <linux/slab.h>