From: Daniel Vetter <daniel@ffwll.ch>
To: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>,
Intel Graphics Development <intel-gfx@lists.freedesktop.org>,
DRI Development <dri-devel@lists.freedesktop.org>,
Daniel Vetter <daniel.vetter@intel.com>
Subject: Re: [Intel-gfx] [PATCH 04/26] drm/rcar-du: Use for_each_*_in_state
Date: Fri, 3 Jun 2016 08:55:36 +0200 [thread overview]
Message-ID: <20160603065536.GW7231@phenom.ffwll.local> (raw)
In-Reply-To: <16650348.1A68xOEv8S@avalon>
On Fri, Jun 03, 2016 at 01:54:44AM +0300, Laurent Pinchart wrote:
> Hi Daniel,
>
> On Monday 30 May 2016 16:54:10 Daniel Vetter wrote:
> > On Mon, May 30, 2016 at 11:58:27AM +0200, Maarten Lankhorst wrote:
> > > Op 30-05-16 om 11:18 schreef Laurent Pinchart:
> > >> Hi Daniel,
> > >>
> > >> Thank you for the patch.
> > >>
> > >> This looks good to me as the resulting code is mostly similar. However,
> > >> the for_each_*_in_state macros end with an for_each_if() that tests if
> > >> the object's state is NULL, which isn't present in this code. I'm
> > >> wondering whether that was an oversight on my side possibly leading to a
> > >> crash when dereferencing a NULL state, or an unneeded check in the
> > >> macros. Can atomic_state->*_states[i] be NULL if atomic_state->*[i] is
> > >> not NULL ?
> > >
> > > Not in any normal case.
> >
> > Yeah, the drm_atomic_get_*_state functions only ever fill in both of
> > neither. If this gets out of sync it's a bug ;-)
>
> Should the check be removed then ? Or replaced by a WARN_ON() ?
In all the places I converted here I nuked those checks, since they moved
into the loop now. Not sure what checks you're talking about.
-Daniel
--
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch
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next prev parent reply other threads:[~2016-06-03 6:55 UTC|newest]
Thread overview: 76+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-05-29 18:34 [PATCH 00/26] RFC: generic nonblocking support in the atomic helpers Daniel Vetter
2016-05-29 18:34 ` [PATCH 01/26] drm/atomic-helper: use for_each_*_in_state more Daniel Vetter
2016-05-30 12:17 ` Maarten Lankhorst
2016-05-30 15:02 ` Daniel Vetter
2016-05-29 18:34 ` [PATCH 02/26] drm/i915: Use drm_atomic_get_existing_plane_state Daniel Vetter
2016-05-30 13:10 ` [Intel-gfx] " Maarten Lankhorst
2016-05-29 18:35 ` [PATCH 03/26] drm/msm: Use for_each_*_in_state Daniel Vetter
2016-05-29 18:35 ` [PATCH 04/26] drm/rcar-du: " Daniel Vetter
2016-05-30 9:18 ` Laurent Pinchart
2016-05-30 9:58 ` Maarten Lankhorst
2016-05-30 14:54 ` [Intel-gfx] " Daniel Vetter
2016-06-02 22:54 ` Laurent Pinchart
2016-06-03 6:55 ` Daniel Vetter [this message]
2016-06-03 9:40 ` Laurent Pinchart
2016-06-03 9:45 ` Daniel Vetter
2016-06-03 9:50 ` Laurent Pinchart
2016-05-29 18:35 ` [PATCH 05/26] drm/vc4: Use for_each_plane_in_state Daniel Vetter
2016-05-29 18:35 ` [PATCH 06/26] drm/atomic: Add __drm_atomic_get_current_plane_state Daniel Vetter
2016-05-30 11:42 ` [Intel-gfx] " Maarten Lankhorst
2016-05-30 15:05 ` Daniel Vetter
2016-05-31 8:35 ` [Intel-gfx] " Maarten Lankhorst
2016-05-29 18:35 ` [PATCH 07/26] drm/exynos: Use for_each_crtc_in_state Daniel Vetter
2016-05-31 12:19 ` Inki Dae
2016-06-13 0:52 ` Inki Dae
2016-05-29 18:35 ` [PATCH 08/26] drm: Consolidate connector arrays in drm_atomic_state Daniel Vetter
2016-05-30 14:59 ` Ville Syrjälä
2016-05-30 15:13 ` Daniel Vetter
2016-05-30 15:25 ` [Intel-gfx] " Ville Syrjälä
2016-05-30 15:33 ` Daniel Vetter
2016-05-30 15:45 ` Ville Syrjälä
2016-05-30 15:48 ` [Intel-gfx] " Daniel Vetter
2016-05-29 18:35 ` [PATCH 09/26] drm: Consolidate plane " Daniel Vetter
2016-05-29 18:35 ` [PATCH 10/26] drm: Consolidate crtc " Daniel Vetter
2016-05-29 18:35 ` [PATCH 11/26] drm/fence: add fence to drm_pending_event Daniel Vetter
2016-05-29 18:35 ` [PATCH 12/26] drm/atomic-helper: Massage swap_state signature somewhat Daniel Vetter
2016-05-30 13:08 ` Maarten Lankhorst
2016-05-30 15:09 ` [Intel-gfx] " Daniel Vetter
2016-05-31 8:43 ` Maarten Lankhorst
2016-05-31 10:46 ` Daniel Vetter
2016-05-31 12:20 ` Maarten Lankhorst
2016-05-29 18:35 ` [PATCH 13/26] drm/arc: Nuke event_list Daniel Vetter
2016-05-29 18:35 ` Daniel Vetter
2016-05-29 18:35 ` [PATCH 14/26] drm/arc: Actually bother with handling atomic events Daniel Vetter
2016-05-29 18:35 ` Daniel Vetter
2016-05-29 18:35 ` [PATCH 15/26] drm/arc: Implement nonblocking commit correctly Daniel Vetter
2016-05-29 18:35 ` Daniel Vetter
2016-05-30 8:15 ` [Intel-gfx] " Maarten Lankhorst
2016-05-30 8:15 ` Maarten Lankhorst
2016-05-30 9:24 ` Daniel Vetter
2016-05-30 9:24 ` Daniel Vetter
2016-05-30 9:36 ` [Intel-gfx] " Maarten Lankhorst
2016-05-30 9:36 ` Maarten Lankhorst
2016-05-30 15:10 ` [Intel-gfx] " Daniel Vetter
2016-05-30 15:10 ` Daniel Vetter
2016-05-29 18:35 ` [PATCH 16/26] drm/hdlcd: Use helper support for nonblocking commits Daniel Vetter
2016-05-31 11:02 ` Liviu Dudau
2016-05-31 11:07 ` Daniel Vetter
2016-05-31 13:13 ` Liviu Dudau
2016-05-29 18:35 ` [PATCH 17/26] drm/fsl-du: Implement some semblance of vblank event handling Daniel Vetter
2016-05-29 18:35 ` [PATCH 18/26] drm/hisilicon: " Daniel Vetter
2016-05-29 18:35 ` [PATCH 19/26] drm/sun4i: " Daniel Vetter
2016-06-01 16:18 ` Maxime Ripard
2016-06-01 22:02 ` Daniel Vetter
2016-05-29 18:35 ` [PATCH 20/26] drm/atomic: kerneldoc for drm_atomic_crtc_needs_modeset Daniel Vetter
2016-05-29 18:35 ` [PATCH 21/26] drm/atomic-helper: nonblocking commit support Daniel Vetter
2016-05-30 8:01 ` [PATCH] " Daniel Vetter
2016-05-31 14:22 ` [Intel-gfx] " Maarten Lankhorst
2016-05-31 14:33 ` Daniel Vetter
2016-05-29 18:35 ` [PATCH 22/26] drm/i915: Signal drm events for atomic Daniel Vetter
2016-05-29 18:35 ` [PATCH 23/26] drm/i915: Roll out the helper nonblock tracking Daniel Vetter
2016-05-29 18:35 ` [PATCH 24/26] drm/rockchip: convert to helper nonblocking atomic commit Daniel Vetter
2016-05-29 18:35 ` [PATCH 25/26] drm/rockchip: Nuke pending event handling in preclose Daniel Vetter
2016-05-29 18:35 ` [PATCH 26/26] drm/virtio: Don't reinvent a flipping wheel Daniel Vetter
2016-05-31 13:40 ` ✗ Ro.CI.BAT: failure for RFC: generic nonblocking support in the atomic helpers Patchwork
2016-05-31 13:42 ` Patchwork
2016-05-31 14:29 ` Patchwork
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