On 1/3/12 12:49 PM, Chris Wilson wrote:
On Tue, 03 Jan 2012 12:02:43 -0500, Adam Jackson<[email protected]> wrote:
On 12/30/11 12:34 AM, Jeff Chua wrote:
How can I go about to help debug this?
The i810 driver probably needs the equivalent fix as:
http://cgit.freedesktop.org/xorg/driver/xf86-video-cirrus/commit/?id=f422d0c38b0befdb2152215ab05d0d14f3da3ed9
The i810 driver uses vgaHWSetMmioFuncs() rather than SetStdFuncs, and so
leaves hwp->io uninitialised. That pointer is then dereferenced by
DACDelay() (as it uses pci_io_read8 irrespective of mmio/std funcs) during
the vgaHWSaveColormap(). At which point, I'm far beyond my comfort zone...
-Chris
Oof, okay, nice find. DACDelay needs to not do that, or at least, not
unconditionally. I'll look into it.
- ajax
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