Re: 2.6.15-mm2

[Ulrich Mueller]

>>>>> On Wed, 11 Jan 2006, Dave Airlie wrote:

>> > How are we supposed to get DRM to work on PCI Express cards if DRM
>> > needs AGP and agpgart does not load when no AGP card is found ? :)
>> 
>> That's puzzling. It should still be loadable. All the current
>> agpgart tree is doing is basically enforcing agp=off if there's no
>> agp card present. That shouldn't prevent the module from actually
>> loading, or it's symbols being referenced by other modules.
>> 
>> Hrmm, it's puzzling that you also are unable to resolve drm_open
>> and drm_release. That may be a follow-on failure from the first,
>> but it seems unlikely.

> Thats' just a cascaded failure, radeon gives out because drm won't
> load because agpgart won't load... there must be a reason why
> agpgart doesn't load... perhaps we've some issue when the backend
> isn't there or something..

Same problem here with 2.6.15-mm3:

   $ lspci -s 00:02.0 -v
   00:02.0 VGA compatible controller: Intel Corporation Mobile 915GM/GMS/910GML Express Graphics Controller (rev 03) (prog-if 00 [VGA])
   	Subsystem: Hewlett-Packard Company nx6110/nc6120
   	Flags: bus master, fast devsel, latency 0, IRQ 16
   	Memory at d0400000 (32-bit, non-prefetchable) [size=512K]
   	I/O ports at 7000 [size=8]
   	Memory at c0000000 (32-bit, prefetchable) [size=256M]
   	Memory at d0480000 (32-bit, non-prefetchable) [size=256K]
   	Capabilities: [d0] Power Management version 2
   $ modprobe -v agpgart
   insmod /lib/modules/2.6.15-mm3/kernel/drivers/char/agp/agpgart.ko 
   FATAL: Error inserting agpgart (/lib/modules/2.6.15-mm3/kernel/drivers/char/agp/agpgart.ko): No such device

And as a consequence intel-agp, drm, and i915 cannot be loaded.

The problem disappears if I revert git-agpgart.patch.
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