On Tue, Jan 20, 2015 at 08:51:15AM -0500, Rob Clark wrote: > On Tue, Jan 20, 2015 at 5:48 AM, Thierry Reding > <thierry.reding@xxxxxxxxx> wrote: > > From: Thierry Reding <treding@xxxxxxxxxx> > > > > There is no use-case where it would be useful for drivers not to > > implement this function and the transitional plane helpers already > > require drivers to provide an implementation. > > > > Signed-off-by: Thierry Reding <treding@xxxxxxxxxx> > > --- > > drivers/gpu/drm/drm_atomic_helper.c | 2 +- > > 1 file changed, 1 insertion(+), 1 deletion(-) > > > > diff --git a/drivers/gpu/drm/drm_atomic_helper.c b/drivers/gpu/drm/drm_atomic_helper.c > > index d467185f7942..010661f23035 100644 > > --- a/drivers/gpu/drm/drm_atomic_helper.c > > +++ b/drivers/gpu/drm/drm_atomic_helper.c > > @@ -1108,7 +1108,7 @@ void drm_atomic_helper_commit_planes(struct drm_device *dev, > > > > funcs = plane->helper_private; > > > > - if (!funcs || !funcs->atomic_update) > > + if (!funcs) > > maybe WARN_ON() here.. or drm_universal_plane_init(), or somewhere, > for missing mandatory fxns would be a nice thing to avoid explosions > under console_lock for first modeset? WARN_ON() here isn't going to do you any good under console_lock and may drivers use drm_universal_plane_init() without having converted to atomic mode-setting. Adding a comment to kerneldoc that it's mandatory is probably the best we can do here. Thierry
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