编译内核出错

jiangn

我想让2.4.20-8的内核支持DirectFB,可是编译时出错：
matroxfb_base.c: In function `matrox_irq':
matroxfb_base.c:171: `M_ICLEAR' undeclared (first use in this function)
matroxfb_base.c:171: (Each undeclared identifier is reported only once
matroxfb_base.c:171: for each function it appears in.)
matroxfb_base.c: At top level:
matroxfb_base.c:158: warning: `matrox_irq' defined but not used
make[3]: *** [matroxfb_base.o] Error 1
make[3]: Leaving directory `/usr/src/linux-2.4.20-8/drivers/video/matrox'
make[2]: *** [_modsubdir_matrox] Error 2
make[2]: Leaving directory `/usr/src/linux-2.4.20-8/drivers/video'
make[1]: *** [_modsubdir_video] Error 2
make[1]: Leaving directory `/usr/src/linux-2.4.20-8/drivers'
make: *** [_mod_drivers] Error 2