Installation drivers clef wi-fi

Bonsoir a tous,
Aiuto !
Je suis en galere pour installer une clef wifi DWA 121 de D-link.
J'ai téléchargé des drivers sur le site de D-link, avec un readme expliquant l'installation.

install:
1. tar zxvf rtl8192CU_linux_v2.0.1406.20110309.tar.gz
2. cd rtl8192CU_linux_v2.0.1406.20110309
3. make
4. su 
5. make install 
6. reboot 

Mais a l'étape "make", j'obtiens des messages d'erreur sans comprendre pourquoi...

linux_v2.0.1406.20110309# make
make ARCH=x86_64 CROSS_COMPILE= -C /lib/modules/3.19.0-30-generic/build M=/home/zsofi/Bureau/dwa121_linux_driver_20140620110309/rtl8192CU_linux_v2.0.1406.20110309  modules
make[1]: Entering directory `/usr/src/linux-headers-3.19.0-30-generic'
  CC [M]  /home/zsofi/Bureau/dwa121_linux_driver_20140620110309/rtl8192CU_linux_v2.0.1406.20110309/core/rtw_cmd.o
In file included from /home/zsofi/Bureau/dwa121_linux_driver_20140620110309/rtl8192CU_linux_v2.0.1406.20110309/core/rtw_cmd.c:23:0:
/home/zsofi/Bureau/dwa121_linux_driver_20140620110309/rtl8192CU_linux_v2.0.1406.20110309/include/osdep_service.h: In function `thread_enter':
/home/zsofi/Bureau/dwa121_linux_driver_20140620110309/rtl8192CU_linux_v2.0.1406.20110309/include/osdep_service.h:417:2: error: implicit declaration of function `daemonize' [-Werror=implicit-function-declaration]
  daemonize("%s", "RTKTHREAD");
  ^
In file included from /home/zsofi/Bureau/dwa121_linux_driver_20140620110309/rtl8192CU_linux_v2.0.1406.20110309/include/drv_types.h:86:0,
                 from /home/zsofi/Bureau/dwa121_linux_driver_20140620110309/rtl8192CU_linux_v2.0.1406.20110309/core/rtw_cmd.c:24:
/home/zsofi/Bureau/dwa121_linux_driver_20140620110309/rtl8192CU_linux_v2.0.1406.20110309/include/rtw_io.h: At top level:
/home/zsofi/Bureau/dwa121_linux_driver_20140620110309/rtl8192CU_linux_v2.0.1406.20110309/include/rtw_io.h:35:28: fatal error: linux/smp_lock.h: No such file or directory
 #include <linux/smp_lock.h>
                            ^
cc1: some warnings being treated as errors
compilation terminated.
make[2]: *** /home/zsofi/Bureau/dwa121_linux_driver_20140620110309/rtl8192CU_linux_v2.0.1406.20110309/core/rtw_cmd.o Error 1
make[1]: *** [_module_/home/zsofi/Bureau/dwa121_linux_driver_20140620110309/rtl8192CU_linux_v2.0.1406.20110309] Error 2
make[1]: Leaving directory `/usr/src/linux-headers-3.19.0-30-generic'
make: *** [modules] Error 2
root@zsofi-U210:/home/zsofi/Bureau/dwa121_linux_driver_20140620110309/rtl8192CU_linux_v2.0.1406.20110309# 

Et ensuite plus rien ne fonctionne...

Merci d'avance les loulous !
Pastafarien en puissance!!!