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

[Emil Velikov]

On Wed, 23 Jan 2019 at 11:04, Eric Engestrom <eric.engestrom at intel.com> wrote:
>
> On Wednesday, 2019-01-23 10:45:17 +0000, Emil Velikov wrote:
> > From: Emil Velikov <emil.velikov at collabora.com>
> >
> > 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 at collabora.com>
> > ---
> >  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

HTH
Emil