Re: Subtle semantic issue with sleep callbacks in drivers

From: Alan Cox (
Date: Thu Apr 17 2003 - 11:24:41 EST

On Iau, 2003-04-17 at 16:56, Jeff Garzik wrote:
> On Thu, Apr 17, 2003 at 04:47:45PM +0100, John Bradford wrote:
> > Hmm, well what about with a PCI hotswap capable board - presumably
> > then we could have the situation where a new VGA card appears that we
> > _have_ to POST?
> Then XFree86 will POST it.
> The kernel really only cares about POST'ing the primary display, too.
> Firmware typically completely disables, and does not POST, secondary
> displays. XFree86 is charged with the responsibility of POST'ing
> secondary displays.

XFree86 currently has to do some pray and hope stuff here. We cannot have
X and the kernel both controlling PCI allocations and config space at once.
X needs kernel interfaces to do the job right some day.

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