Re: 2.5.70-bk radeonfb oops on boot.

[Simon Fowler <simon@himi.org>]

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On Tue, Jun 10, 2003 at 08:16:41PM -0700, Andrew Morton wrote:
> Simon Fowler <simon@himi.org> wrote:
> >
> > On Tue, Jun 10, 2003 at 02:14:40PM -0700, Andrew Morton wrote:
> > > Simon Fowler <simon@himi.org> wrote:
> > > >
> > > > On Tue, Jun 10, 2003 at 04:16:54PM +1000, Simon Fowler wrote:
> > > > > I've started seeing a hard lockup on boot with my Fujitsu Lifebook
> > > > > p2120 laptop, with a radeon mobility M6 LY, when using a Linus bk
> > > > > kernel as of 2003-06-09 (possibly earlier - the last kernel I've
> > > > > tested is bk as of 2003-06-04). lspci lists this hardware:
> > > > > 
> > > > I've narrowed the start of the problem down: 2.5.70-bk13 works,
> > > > -bk14 oopses. 
> > > 
> > > That's funny.  bk13->bk14 was almost all arm stuff.  diffstat below.
> > > 
> > > It might be worth reverting this chunk, see if that fixes it:
> > > 
> > > --- b/drivers/char/mem.c        Thu Jun  5 23:36:40 2003
> > > +++ b/drivers/char/mem.c        Sun Jun  8 05:02:24 2003
> > > @@ -716 +716 @@
> > > -__initcall(chr_dev_init);
> > > +subsys_initcall(chr_dev_init);
> > > 
> > And we have a winner . . . Reverting this hunk fixes the oops.
> > 
> 
> So it's another initcall problem in the PCI layer.
> 
> pci_enable_device_bars() is needing things which are not yet set up.  A lot
> of the PCI initialisation is at subsys_initcall() as well, and you got
> unlucky with link order.
> 
> I expect the below patch will fix this as well.  Could you please put the
> above change back to normal and see if this one fixes it?
> 
I applied this to a clean 2.5.70-bk14 tree, and it failed to boot -
I've copied the output after switching to the framebuffer:

--------------------------------------------------
onsole: switching to colour frame buffer device 160x48
pty: 256 Unix98 ptys configured.
block request queues:
  4/128 requests per read queue
  4/128 requests per write queue
  Enter congestion at 15
  Exit congestion at 17
PCI: Cannot allocate resource region 0 of device 00:14.0
PCI: Cannot allocate resource region 2 of device 00:14.0
--------------------------------------------------

00:14.0 is the Radeon.

Simon

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