--- a/compatibility.h
+++ b/compatibility.h
@@ -21,7 +21,6 @@
 #endif /* LINUX_VERSION_CODE >= KERNEL_VERSION(3,7,0) */
 #endif /* LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,31) */
 
-#if LINUX_VERSION_CODE < KERNEL_VERSION(5,15,0)
 #if LINUX_VERSION_CODE < KERNEL_VERSION(5,12,0)
 	#define PHY_MAC_INTERRUPT		PHY_IGNORE_INTERRUPT
 #if LINUX_VERSION_CODE < KERNEL_VERSION(5,9,0)
@@ -608,11 +607,6 @@
 #endif /* LINUX_VERSION_CODE < KERNEL_VERSION(5,8,0) */
 #endif /* LINUX_VERSION_CODE < KERNEL_VERSION(5,9,0) */
 #endif /* LINUX_VERSION_CODE < KERNEL_VERSION(5,12,0) */
-	static inline void eth_hw_addr_set(struct net_device *dev, const u8 *addr)
-	{
-		memcpy(dev->dev_addr, addr, 6);
-	}
-#endif /* LINUX_VERSION_CODE < KERNEL_VERSION(5,15,0) */
 
 #ifndef FALSE
 	#define TRUE	1