Linux 2.5.1-dj5

Patch against 2.5.1 vanilla is available from:
http://www.codemonkey.org.uk/patches/2.5/patch-2.5.1-dj5.diff.bz2

Some of these fixes still haven't found their way back to Marcelo yet
but should show up in 2.4.17-rc3 / 2.4.18pre1 with any luck.

2.5.1-dj5
o   Merge 2.5.2pre1.
o   Merge 2.4.17final.
o   Gravis ultrasound PnP update                (Andrey Panin)