While compiling 2.5.5-pre1 I ran into this problem:
matroxfb_base.c: In function `matroxfb_ioctl':
matroxfb_base.c:1062: warning: implicit declaration of function
`matroxfb_switch'
matroxfb_base.c: In function `initMatrox2':
matroxfb_base.c:1792: incompatible types in assignment
make[4]: *** [matroxfb_base.o] Error 1
make[4]: Leaving directory
`/usr/src/linux-2.5.5-pre1/drivers/video/matrox'
make[3]: *** [first_rule] Error 2
make[3]: Leaving directory
`/usr/src/linux-2.5.5-pre1/drivers/video/matrox'
make[2]: *** [_subdir_matrox] Error 2
make[2]: Leaving directory `/usr/src/linux-2.5.5-pre1/drivers/video'
make[1]: *** [_subdir_video] Error 2
make[1]: Leaving directory `/usr/src/linux-2.5.5-pre1/drivers'
make: *** [_dir_drivers] Error 2
Yours,
Luuk van der Duim