diff -Nru rtl8192du-dkms-4.0.10~jammy8/debian/changelog rtl8192du-dkms-4.0.10~jammy9/debian/changelog
--- rtl8192du-dkms-4.0.10~jammy8/debian/changelog	2022-02-13 21:07:31.000000000 +0000
+++ rtl8192du-dkms-4.0.10~jammy9/debian/changelog	2022-04-25 19:44:09.000000000 +0000
@@ -1,4 +1,11 @@
-rtl8192du-dkms (4.0.10~jammy8) jammy; urgency=medium
+rtl8192du-dkms (4.0.10~jammy9) jammy; urgency=medium
+
+  * Updated from github source (Apr 25, 2022).
+    - Buildfix for Linux 5.18
+
+ -- Gökhan Gökkaya <wirelessanten@gmail.com>  Mon, 25 Apr 2022 22:44:09 +0300
+
+rtl8192du-dkms (4.0.10~focal8) focal; urgency=medium
 
   * Update from github source (Feb 3, 2022).
     - Fix build for kernel 5.17
diff -Nru rtl8192du-dkms-4.0.10~jammy8/rtl8192du/include/ieee80211.h rtl8192du-dkms-4.0.10~jammy9/rtl8192du/include/ieee80211.h
--- rtl8192du-dkms-4.0.10~jammy8/rtl8192du/include/ieee80211.h	2022-02-13 21:05:34.000000000 +0000
+++ rtl8192du-dkms-4.0.10~jammy9/rtl8192du/include/ieee80211.h	2022-04-25 19:42:47.000000000 +0000
@@ -960,18 +960,18 @@
 #define MAC_FMT "%02x:%02x:%02x:%02x:%02x:%02x"
 #define MAC_ARG(x) ((u8*)(x))[0],((u8*)(x))[1],((u8*)(x))[2],((u8*)(x))[3],((u8*)(x))[4],((u8*)(x))[5]
 
-extern __inline int is_multicast_mac_addr(const u8 *addr)
+static inline int is_multicast_mac_addr(const u8 *addr)
 {
         return ((addr[0] != 0xff) && (0x01 & addr[0]));
 }
 
-extern __inline int is_broadcast_mac_addr(const u8 *addr)
+static inline int is_broadcast_mac_addr(const u8 *addr)
 {
 	return ((addr[0] == 0xff) && (addr[1] == 0xff) && (addr[2] == 0xff) &&   \
 		(addr[3] == 0xff) && (addr[4] == 0xff) && (addr[5] == 0xff));
 }
 
-extern __inline int is_zero_mac_addr(const u8 *addr)
+static inline int is_zero_mac_addr(const u8 *addr)
 {
 	return ((addr[0] == 0x00) && (addr[1] == 0x00) && (addr[2] == 0x00) &&   \
 		(addr[3] == 0x00) && (addr[4] == 0x00) && (addr[5] == 0x00));