Quoting Daniel Vetter (2017-08-18 10:21:24) > We're not super-consistent about these, but I think it's worth to > document at least the commmon patterns. > > Cc: Joonas Lahtinen <joonas.lahtinen@xxxxxxxxxxxxxxx> > Cc: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx> > Cc: "Zhang, Tina" <tina.zhang@xxxxxxxxx> > Signed-off-by: Daniel Vetter <daniel.vetter@xxxxxxxxx> One extra used outside of i915 is ENOSYS. Perhaps nouveau/vmgfx might like to chime in if that's exposed to userspace and is a good pattern you'ld like DRM as a whole to pick up. As far as i915, these do capture our uses very well. Reviewed-by: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx> > --- > Documentation/gpu/drm-uapi.rst | 53 ++++++++++++++++++++++++++++++++++++++++++ > 1 file changed, 53 insertions(+) > > diff --git a/Documentation/gpu/drm-uapi.rst b/Documentation/gpu/drm-uapi.rst > index 679373b4a03f..f3cc829467b4 100644 > --- a/Documentation/gpu/drm-uapi.rst > +++ b/Documentation/gpu/drm-uapi.rst > @@ -177,6 +177,59 @@ IOCTL Support on Device Nodes > .. kernel-doc:: drivers/gpu/drm/drm_ioc32.c > :export: > > +Recommended IOCTL Return Values > +=============================== Would this not be a preface to @drm_driver.ioctl() ? -Chris _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/dri-devel
