17 Jul
2018
17 Jul
'18
5:02 p.m.
On Tue, 2018-07-17 at 08:28 +0100, Chris Wilson wrote:
Quoting José Roberto de Souza (2018-07-16 23:38:36)
GPU accelerators usually don't have display block or the display driver part can be disable when building driver(for servers it save some resources) so it is important let userspace check this capability too.
We currently communicate that by having no modeset resources. What does another cap bit accomplish that we don't already know?
This is a hackish way to check if driver support modeset, drmModeGetResources()/drm_mode_getresources() can fail and return null by other reasons and just check for the errno value can be misleading too.
-Chris