[Intel-gfx] [PATCH i-g-t] lib/drmtest: make DRIVER_ANY match any driver

[Daniel Vetter]

On Mon, Jan 30, 2017 at 12:18:07PM +0000, Eric Engestrom wrote:
> On Monday, 2017-01-30 11:50:52 +0000, Daniel Stone wrote:
> > Hi,
> > 
> > On 30 January 2017 at 11:46, Petri Latvala <petri.latvala at intel.com> wrote:
> > > NAK.
> > >
> > > DRIVER_VGEM is omitted from DRIVER_ANY intentionally. Vgem is unable
> > > to modeset, unable to render, practically it only supports the
> > > vgem-specific tests. See also: lib/drmtest.c, __drm_open_driver().
> > 
> > Yeah, I agree with this. It's mostly just there as an auxiliary
> > helper. Opening DRIVER_ANY to vgem means that, if you run on a system
> > with vgem as well as a supported driver, you can end up with a
> > near-100% skip rate if you don't explicitly specify the device,
> > depending on device-load ordering.
> > 
> > Cheers,
> > Daniel
> 
> OK. This should probably be documented then (a simple comment next to
> the #define would go a long way), so that the next guy who see this
> doesn't make the same mistake I did :)

Maybe we should rename it to DRIVER_ANY_KMS, and check in the open
function that there's at least 1 plane/crtc/encoder/connector there and
otherwise skip? I think that would be even better than documenting it,
since it'd also catch e.g. tegra+nouveau systems.
-Daniel
-- 
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch