Comment 142 for bug 311895

On Mon, 6 Jul 2009 23:03:19 -0700 (PDT)
<email address hidden> wrote:
> --- Comment #91 from Martin Pitt <email address hidden> 2009-07-06
> 23:03:18 PST --- So apparently the offset is even stable across
> rebuilds. I captured the trace again, and it looks exactly like the
> previous trace, so I'm not copying that again.
>
> (gdb) list *intel_update_watermarks+0xcf
> 0x101af is in intel_update_watermarks
> (/home/martin/ubuntu/kernel/linux-2.6.31/drivers/gpu/drm/i915/intel_display.c:1918).
> 1913 intel_crtc->pipe,
> crtc->mode.clock);
> 1914 planeb_clock =
> crtc->mode.clock; 1915 }
> 1916 sr_hdisplay = crtc->mode.hdisplay;
> 1917 sr_clock = crtc->mode.clock;
> 1918 pixel_size =
> crtc->fb->bits_per_pixel / 8; 1919 }
> 1920 }
> 1921
> 1922 /* Single pipe configs can enable self refresh */
>
> So I guess it crashes because crtc->fb is NULL, since fbcon is not
> loaded yet?

Ah yes, that helps a lot, thanks. I'll fix that up.