[PATCH] mgag200: some cleanup and a fix for corrupted output

[Christopher Harvey <charvey@matrox.com>]

Patches 1 to 4 are just cleanup. Maybe these should should be rolled
into one patch?

Patch 5 is a bit more complicated.
On cards with very little video memory, (e.g 8MB) higher resolutions
at 32bit framebuffer depths will get corrupted because the required
memory is larger than what the framebuffer has. DRM has "max_height"
and "max_width" but no "max_bytes" for limiting resolutions, so the
patch is a little hacky. The first for loop tries to associate a
connector with the mode being tested. From the connector I can get the
bpp if the user specified one on the video= commandline. After that I
do 2 things:
 1) Invalidate the requested mode from the video= parameter
 2) Return MODE_BAD if the framebuffer would be too large
I feel this patch plays with structures it shouldn't have to touch to
get the bpp. An alternative fix would be to include a "max_bytes" in
the DRM core and then do these checks there.

I'm also wondering, did I miss the 3.9.0 merge window?

Thanks,

Christopher Harvey (5):
  drm/mgag200: Cleanup: Remove pointless call to drm_fb_get_bpp_depth
  drm/mgag200: Cleanup: 'fbdev_list' in 'struct mga_fbdev' is not used
  drm/mgag200: Cleanup: Pass driver specific mga_device in driver
    functions
  drm/mgag200: Cleanup: Remove extra variable assigns
  drm/mgag200: Reject modes that are too big for VRAM

 drivers/gpu/drm/mgag200/mgag200_drv.h  |  1 -
 drivers/gpu/drm/mgag200/mgag200_fb.c   |  3 ---
 drivers/gpu/drm/mgag200/mgag200_main.c |  2 --
 drivers/gpu/drm/mgag200/mgag200_mode.c | 34 ++++++++++++++++++++++++++++++----
 4 files changed, 30 insertions(+), 10 deletions(-)

-- 
1.7.12.4