Re: [PATCH v2 2/2] drm/vc4: Disable V3D interactions if the v3d component didn't probe.

Paul Kocialkowski paul.kocialkowski@bootlin.com writes:

Hi,

On Mon, 2019-04-01 at 11:35 -0700, Eric Anholt wrote:

...

One might want to use the VC4 display stack without using Mesa. Similar to the debugfs fixes for not having all of the possible display bits enabled, make sure you can't oops in vc4 if v3d isn't enabled.

Just thought about this: perhaps we should be returning -ENODEV instead of -EINVAL when !vc4->v3d, just so that the error is a bit more explicit to userspace?

I like it. Doing that while applying the series.