Re: [PATCH libdrm 1/2] xf86drm: fallback to MODALIAS for OF less platform devices

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Hi Emil,

Am Donnerstag, den 24.01.2019, 14:42 +0000 schrieb Emil Velikov:
> > On Wed, 23 Jan 2019 at 11:26, Emil Velikov <emil.l.velikov@xxxxxxxxx> wrote:
> > 
> > On Wed, 23 Jan 2019 at 11:04, Eric Engestrom <eric.engestrom@xxxxxxxxx> wrote:
> > > 
> > > On Wednesday, 2019-01-23 10:45:17 +0000, Emil Velikov wrote:
> > > > > > > > From: Emil Velikov <emil.velikov@xxxxxxxxxxxxx>
> > > > 
> > > > Some devices can lack OF data or it may not be available in the uevent
> > > > file. Fallback to the MODALIAS data in those cases.
> > > > 
> > > > We strip any leading "MODALIAS=.*:" thus the resulting information is
> > > > compatible with existing code in Mesa.
> > > > 
> > > > > > > > Signed-off-by: Emil Velikov <emil.velikov@xxxxxxxxxxxxx>
> > > > ---
> > > >  xf86drm.c | 55 ++++++++++++++++++++++++++++++++++++++++++-------------
> > > >  1 file changed, 42 insertions(+), 13 deletions(-)
> > > > 
> > > > diff --git a/xf86drm.c b/xf86drm.c
> > > > index 10df682b..374734eb 100644
> > > > --- a/xf86drm.c
> > > > +++ b/xf86drm.c
> > > > @@ -3511,15 +3511,28 @@ free_device:
> > > >  static int drmParsePlatformBusInfo(int maj, int min, drmPlatformBusInfoPtr info)
> > > >  {
> > > >  #ifdef __linux__
> > > > -    char path[PATH_MAX + 1], *name;
> > > > +    char path[PATH_MAX + 1], *name, *foo;
> > > 
> > > I assume you didn't mean to send this patch yet? :P
> > > 
> > 
> > Thanks Eric, I intentionally sent it out. Mind was blank thinking for
> > a reasonable variable name :-\
> > Suggestions are more than welcome.
> > 
> > For reference with this patch drmdevice and other drmDevice API users list:
> >  - VGEM, needs "drm/vgem: Fix vgem_init to get drm device available."
> > - in v5.0 only :'-(
> >  - etnaviv, after "drm/etnaviv: remove the need for a gpu-subsystem DT
> > node" landed in v4.17/18
> > 
> 
> Christian can you please test that this patches brings etnaviv back to the list?
> Above is a reasonable assumption, yet assumption never the less.

I can confirm that with this patch applied
loader_open_render_node("etnaviv") works as intended.

Regards,
Lucas

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