+--- a/drivers/net/wireless/libertas/cfg.c
++++ b/drivers/net/wireless/libertas/cfg.c
+@@ -6,6 +6,7 @@
+ *
+ */
+
++#undef pr_fmt
+ #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+ #include <linux/hardirq.h>
+--- a/drivers/net/wireless/libertas/if_cs.c
++++ b/drivers/net/wireless/libertas/if_cs.c
+@@ -21,6 +21,7 @@
+
+ */
+
++#undef pr_fmt
+ #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+ #include <linux/module.h>
+--- a/drivers/net/wireless/libertas/if_sdio.c
++++ b/drivers/net/wireless/libertas/if_sdio.c
+@@ -26,6 +26,7 @@
+ * if_sdio_card_to_host() to pad the data.
+ */
+
++#undef pr_fmt
+ #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+ #include <linux/kernel.h>
+--- a/drivers/net/wireless/libertas/if_spi.c
++++ b/drivers/net/wireless/libertas/if_spi.c
+@@ -17,6 +17,7 @@
+ * (at your option) any later version.
+ */
+
++#undef pr_fmt
+ #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+ #include <linux/hardirq.h>
+--- a/drivers/net/wireless/libertas/if_usb.c
++++ b/drivers/net/wireless/libertas/if_usb.c
+@@ -2,6 +2,7 @@
+ * This file contains functions used in USB interface module.
+ */
+
++#undef pr_fmt
+ #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+ #include <linux/delay.h>
+--- a/drivers/net/wireless/libertas/main.c
++++ b/drivers/net/wireless/libertas/main.c
+@@ -4,6 +4,7 @@
+ * thread etc..
+ */
+
++#undef pr_fmt
+ #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+ #include <linux/moduleparam.h>
+--- a/drivers/net/wireless/libertas/mesh.c
++++ b/drivers/net/wireless/libertas/mesh.c
+@@ -1,3 +1,4 @@
++#undef pr_fmt
+ #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+ #include <linux/delay.h>
+--- a/drivers/net/wireless/libertas/rx.c
++++ b/drivers/net/wireless/libertas/rx.c
+@@ -2,6 +2,7 @@
+ * This file contains the handling of RX in wlan driver.
+ */
+
++#undef pr_fmt
+ #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+ #include <linux/etherdevice.h>