On Mon, Nov 28, 2016 at 8:14 AM, Michel Dänzer <michel@xxxxxxxxxxx> wrote: > On 28/11/16 03:55 PM, Daniel Vetter wrote: >> On Sat, Nov 26, 2016 at 7:22 PM, David Herrmann <dh.herrmann@xxxxxxxxx> wrote: >>> On Sat, Nov 26, 2016 at 7:07 PM, Dmitry Vyukov <dvyukov@xxxxxxxxxx> wrote: >>>> grep "card0" dmesg: >>>> [ 5.298617] device: 'card0': device_add >>>> [ 5.298946] PM: Adding info for No Bus:card0 >>>> [ 6.436178] device: 'card0': device_add >>>> [ 6.436488] PM: Adding info for No Bus:card0 >>>> >>>> >>>> # ls -l /dev/dri/card0 >>>> crw-rw---T 1 root video 226, 0 Nov 26 18:05 /dev/dri/card0 >>>> >>>> # ls -lt /sys/class/drm/card0/device/ >>>> ls: cannot access /sys/class/drm/card0/device/: No such file or directory >>>> >>>> # ls -lt /sys/class/drm/card0/device/driver >>>> ls: cannot access /sys/class/drm/card0/device/driver: No such file or directory >>> >>> Looks like vgem. Something like this should help: >>> >>> https://gist.github.com/dvdhrm/1bcdf4f3485aa1614a0198a7b90515e2 >>> >>> I wonder whether it would be more appropriate to return -ENOTSUPP rather than 0. > > Can't see how that would matter FWIW. > > >> Seems a bit overkill, but can't hurt. This is most likely a >> regression, probably introduced in >> >> commit f837297ad82480024d3ad08cd84f6670bcafa862 >> Author: Michel Dänzer <michel.daenzer@xxxxxxx> >> Date: Mon Aug 8 16:23:39 2016 +0900 >> >> drm: Add DRM_MODE_PAGE_FLIP_TARGET_ABSOLUTE/RELATIVE flags v2 >> >> Michel, can you pls take care of this? Either with a minimal fix, or >> by adopting David's patch? > > Can't we just use David's patch as-is? If not, I think Dmitry or someone > else would be better equipped than me to extract a minimal fix from it > and test it. I know nothing about DRM code. Reproducer is attached to the first email. _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/dri-devel
