Buildfix for Linux 5.18

[kelebek333]

Buildfix for Linux 5.18

[birdofprey]

os:Debian Gnu/Linux
kernel:5.18.0-0.bpo.1-amd64 (x86_64)
error:
/var/lib/dkms/rtl8821CU/5.4.1/build/include/ieee80211.h:1533: multiple definition of is_multicast_mac_addr'; /var/lib/dkms/rtl882 1CU/5.4.1/build/core/rtw_cmd.o:/var/lib/dkms/rtl8821CU/5.4.1/build/include/ieee80211.h:1533: first defined here ld: /var/lib/dkms/rtl8821CU/5.4.1/build/hal/btc/halbtc8821c2ant.o: in function is_broadcast_mac_addr':
/var/lib/dkms/rtl8821CU/5.4.1/build/include/ieee80211.h:1538: multiple definition of is_broadcast_mac_addr'; /var/lib/dkms/rtl882 1CU/5.4.1/build/core/rtw_cmd.o:/var/lib/dkms/rtl8821CU/5.4.1/build/include/ieee80211.h:1538: first defined here ld: /var/lib/dkms/rtl8821CU/5.4.1/build/hal/btc/halbtc8821c2ant.o: in function is_zero_mac_addr':
/var/lib/dkms/rtl8821CU/5.4.1/build/include/ieee80211.h:1544: multiple definition of is_zero_mac_addr'; /var/lib/dkms/rtl8821CU/5 .4.1/build/core/rtw_cmd.o:/var/lib/dkms/rtl8821CU/5.4.1/build/include/ieee80211.h:1544: first defined here ld: /var/lib/dkms/rtl8821CU/5.4.1/build/core/rtw_mp.o: in function is_multicast_mac_addr':
/var/lib/dkms/rtl8821CU/5.4.1/build/include/ieee80211.h:1533: multiple definition of is_multicast_mac_addr'; /var/lib/dkms/rtl882 1CU/5.4.1/build/core/rtw_cmd.o:/var/lib/dkms/rtl8821CU/5.4.1/build/include/ieee80211.h:1533: first defined here ld: /var/lib/dkms/rtl8821CU/5.4.1/build/core/rtw_mp.o: in function is_broadcast_mac_addr':
/var/lib/dkms/rtl8821CU/5.4.1/build/include/ieee80211.h:1538: multiple definition of is_broadcast_mac_addr'; /var/lib/dkms/rtl882 1CU/5.4.1/build/core/rtw_cmd.o:/var/lib/dkms/rtl8821CU/5.4.1/build/include/ieee80211.h:1538: first defined here ld: /var/lib/dkms/rtl8821CU/5.4.1/build/core/rtw_mp.o: in function is_zero_mac_addr':
/var/lib/dkms/rtl8821CU/5.4.1/build/include/ieee80211.h:1544: multiple definition of `is_zero_mac_addr'; /var/lib/dkms/rtl8821CU/5
.4.1/build/core/rtw_cmd.o:/var/lib/dkms/rtl8821CU/5.4.1/build/include/ieee80211.h:1544: first defined here
make[2]: *** [/usr/src/linux-headers-5.18.0-0.bpo.1-common/scripts/Makefile.build:489：/var/lib/dkms/rtl8821CU/5.4.1/build/8821cu.
o] 错误 1
make[1]: *** [/usr/src/linux-headers-5.18.0-0.bpo.1-common/Makefile:1858：/var/lib/dkms/rtl8821CU/5.4.1/build] 错误 2
make[1]: 离开目录“/usr/src/linux-headers-5.18.0-0.bpo.1-amd64”
make: *** [Makefile:2217：modules] 错误 2

[MichaIng]

Works well, many thanks for the patch 👍.

[birdofprey]

https://github.com/kelebek333/rtl8821CU/tree/buildfix-518
谢谢自由开源带来的软件延续和演进。kernel5.18可以使用了

[fujitatomoya]

this also fixes the problem #173 with Ubuntu 20.04.

tomoyafujita@~/DVT >uname -a
Linux tomoyafujita-HP-Compaq-Elite-8300-SFF 5.15.0-86-generic #96~20.04.1-Ubuntu SMP Thu Sep 21 13:23:37 UTC 2023 x86_64 x86_64 x86_64 GNU/Linux

thank you very much for the PR. hopefully this would be merged into mainline soon 🤞