[PATCH libdrm 3/3] xf86drm: don't fatal on per device error in drmGetDevice[s]2

Jonathan Gray jsg at jsg.id.au
Mon Dec 12 14:55:31 UTC 2016

On Mon, Dec 12, 2016 at 02:12:28PM +0000, Emil Velikov wrote:
> On 10 December 2016 at 05:52, Jonathan Gray <jsg at jsg.id.au> wrote:
> > When iterating over all the device nodes if drmProcessPciDevice()
> > returned an error for any node the function would return an error,
> > ignoring any valid nodes.
> >
> > The result of this on OpenBSD where drmProcessPciDevice() results in
> > device nodes being opened to issue ioctls to get pci data
> > was that data obtained from /dev/drm0 would be ignored if /dev/drm1
> > could not be opened.
> >
> Out of curiosity - did you actually hit such an issue or you've
> spotted it by observation ?
> I'm not too sure which route is the "correct" one here, but I believe
> you got it spot on.
> I'll push this alongside v2 of 1/3 and 2/3.
> Thanks !
> Emil

Currently by default on login we change ownership of /dev/drm0 via
fbtab when a user logs in on a glass console but no other /dev/drm

I saw this before the OpenBSD specific path was added and was reminded
of it when testing one of the functions that isn't used by Mesa yet.

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