Am Sonntag, den 04.07.2010, 12:35 -0700 schrieb Jesse Barnes:
> On Sun, 04 Jul 2010 20:08:13 +0200
> Alexey Fisher <bug-track@xxxxxxxxxxxxxxxxx> wrote:
>
> > Hallo all,
> > i have suspend problem after this patch:
> >
> > commit 70565d00db6ef5735819db973fa8da95bd34a6ab
> > Author: Jesse Barnes <jbarnes@xxxxxxxxxxxxxxxxxxxxxxxx>
> > Date: Thu Jul 1 04:45:43 2010 -0700
> >
> > drm/i915: fix page flip finish vs. prepare on plane B
> >
> > The refreshed patch had a copy & paste bug.
> >
> > Reported-by: Simon Farnsworth <simon.farnsworth@xxxxxxxxxx>
> > Signed-off-by: Jesse Barnes <jbarnes@xxxxxxxxxxxxxxxx>
> > Signed-off-by: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>
> >
> > diff --git a/drivers/gpu/drm/i915/i915_irq.c
> > b/drivers/gpu/drm/i915/i915_irq.c
> > index d676e55..dba53d4 100644
> > --- a/drivers/gpu/drm/i915/i915_irq.c
> > +++ b/drivers/gpu/drm/i915/i915_irq.c
> > @@ -947,9 +947,9 @@ irqreturn_t i915_driver_irq_handler(DRM_IRQ_ARGS)
> > }
> >
> > if (iir & I915_DISPLAY_PLANE_B_FLIP_PENDING_INTERRUPT) {
> > + intel_prepare_page_flip(dev, 1);
> > if (dev_priv->flip_pending_is_done)
> > intel_finish_page_flip_plane(dev, 1);
> > - intel_prepare_page_flip(dev, 1);
> > }
> >
> > if (pipea_stats & vblank_status) {
> >
> > =============================================
> >
> > for testing i use plain "echo mem > /sys/power/state"
> > after this, pc will initiate suspending and freeze with black screen and
> > cursor on the top left corner.
> > after reversing this patch suspend working again.
> > My conf: Intel DG45ID board (G45 + ICH10) and 64bit ubuntu 10.04
>
> Sounds like your kernel may have panic'd with the change. The previous
> code was definitely wrong though, so it may be a more general problem
> with the flip done vs. pending bit.
>
> Can you find the "vt/console: try harder to print output when panicing"
> patch and apply that? You may get some better output and we can figure
> out what's going on.
I found this patch, but i still can't get any output. To get serial port
working i'll need some time to solder it.
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