Re: [PATCH v4 5/6] drm/i915: use new drm_kick_out_firmware()

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On Mon, Sep 02, 2013 at 02:02:06PM +0200, David Herrmann wrote:
> Hi
> 
> On Mon, Sep 2, 2013 at 9:43 AM, Daniel Vetter <daniel@xxxxxxxx> wrote:
> > On Sun, Sep 01, 2013 at 03:36:51PM +0200, David Herrmann wrote:
> >> Use the new DRM infrastructure to kick out firmware DRM drivers before
> >> loading i915.
> >>
> >> Cc: Daniel Vetter <daniel.vetter@xxxxxxxx>
> >> Signed-off-by: David Herrmann <dh.herrmann@xxxxxxxxx>
> >> ---
> >>  drivers/gpu/drm/i915/i915_dma.c | 6 +++---
> >>  1 file changed, 3 insertions(+), 3 deletions(-)
> >>
> >> diff --git a/drivers/gpu/drm/i915/i915_dma.c b/drivers/gpu/drm/i915/i915_dma.c
> >> index 3e4e607..9d375a6 100644
> >> --- a/drivers/gpu/drm/i915/i915_dma.c
> >> +++ b/drivers/gpu/drm/i915/i915_dma.c
> >> @@ -1414,9 +1414,9 @@ static void i915_kick_out_firmware_fb(struct drm_i915_private *dev_priv)
> >>       primary =
> >>               pdev->resource[PCI_ROM_RESOURCE].flags & IORESOURCE_ROM_SHADOW;
> >>
> >> -     remove_conflicting_framebuffers(ap, "inteldrmfb", primary);
> >> -
> >> -     kfree(ap);
> >> +     drm_kick_out_firmware(ap, primary);
> >> +     dev_priv->dev->apertures = ap;
> >> +     dev_priv->dev->apert_boot = primary;
> >
> > What about passing dev to drm_kick_out_firmware and shovelling these two
> > assignments in there? I've check your nouveau/radeon patches and I think
> > this would work ...
> 
> Yepp, that sounds reasonable. And I guess the kfree() of apertures can
> also be done in drm_put_dev(). Maybe we can even to the whole stuff in
> drm_pci.c, I will have a look.

I like the helper approach used here since it allows drivers to pick an
appropriate spot. Moving it into drm_pci.c could be a bit ugly. Aside: I'm
pondering ideas to weed out the midlayer smell from the drm device init
sequence. I've played around with a few things and it looks like we're
really close to doing the Right Thing ;-)

Cheers, Daniel
-- 
Daniel Vetter
Software Engineer, Intel Corporation
+41 (0) 79 365 57 48 - http://blog.ffwll.ch
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