The patch updates rivafb to the following:

1.  Fixed cursor corruption and simplified cursor code.

2.  Maximized var->yres_virtual on initial mode setting.  Scrolling,
   therefore, defaults to y-panning which is significantly faster.

3.  Restricted var->xres_virtual and var->yres_virtual to 0x7fff
   (hardware limitation?).  Otherwise, var->yres_virtual > 0x7fff + panning
   will hang the GPU.

4.  Added I2C/DDC support.  This feature enables independent mode setup
   to rivafb.  'stty rows n cols n' should now work correctly.  This is a
   configurable option.

5. Various/minor fixes to drawing code.
Signed-off-by: Antonino Daplas <adaplas@pol.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>