[Nouveau] [PATCH] nv: improve KMS detection

[Aaron Plattner]

On Sun, May 23, 2010 at 03:37:03PM -0700, Ben Skeggs wrote:
> On Sun, 2010-05-23 at 21:46 +0200, Marcin Slusarz wrote:
> > 1) DRICreatePCIBusID belongs to xserver dri module, so when it's
> >    unavailable we can't format string for drmCheckModesettingSupported.
> >    (This situation happened to me with KMS enabled and dri module moved
> >    somewhere else by Gentoo's "eselect opengl set nvidia" switcher)
> >    Open code DRICreatePCIBusID to drop dri dependency.
> > 2) Once we dropped dependency on dri module (which linked to libdrm),
> >    we have to link directly to libdrm.
> An alternative, which we use in Fedora for nv/vesa is to use
> pci_device_has_kernel_driver() from libpciaccess.

That seems better than open-coding it, and avoids a dependency on libdrm
which is nice.