请教装摄像头驱动问题

hatesky

root@Synx gspcav1-20070110]# make
make -C /lib/modules/`uname -r`/build SUBDIRS=/home/downloads/gspcav1-20070110 CC=cc modules
make[1]: Entering directory `/usr/src/kernels/2.6.20-1.2933.fc6-i686'
CC [M] /home/downloads/gspcav1-20070110/gspca_core.o
/home/downloads/gspcav1-20070110/gspca_core.c: 在函数 ‘spca50x_create_sysfs’ 中：
/home/downloads/gspcav1-20070110/gspca_core.c:2615: 警告：忽略声明有 warn_unused_result 属性的 ‘video_device_create_file’ 的返回值
/home/downloads/gspcav1-20070110/gspca_core.c:2616: 警告：忽略声明有 warn_unused_result 属性的 ‘video_device_create_file’ 的返回值
/home/downloads/gspcav1-20070110/gspca_core.c:2617: 警告：忽略声明有 warn_unused_result 属性的 ‘video_device_create_file’ 的返回值
CC [M] /home/downloads/gspcav1-20070110/decoder/gspcadecoder.o
LD [M] /home/downloads/gspcav1-20070110/gspca.o
Building modules, stage 2.
MODPOST 1 modules
CC /home/downloads/gspcav1-20070110/gspca.mod.o
LD [M] /home/downloads/gspcav1-20070110/gspca.ko
make[1]: Leaving directory `/usr/src/kernels/2.6.20-1.2933.fc6-i686'
请问在make的时候出现上边的警告是什么原因？
在线等着解决 大家帮帮忙 谢谢
make install后
depmod -a  
modprobe spca5xx
说找不到这个spca5xx