]> git.baikalelectronics.ru Git - kernel.git/commit
drm/prime: Make DRIVER_PRIME a no-op
authorDaniel Vetter <daniel.vetter@ffwll.ch>
Fri, 14 Jun 2019 20:35:21 +0000 (22:35 +0200)
committerDaniel Vetter <daniel.vetter@ffwll.ch>
Fri, 21 Jun 2019 09:48:09 +0000 (11:48 +0200)
commite2b8c4c39e1a25fcaa87f5b7d3f1e8f607ef974d
tree719630d7c2c87852e68bf18434a0c6b1e92a9a06
parentd0bdfc72e77a7c01ac01ff3d2451b93e53b5db2b
drm/prime: Make DRIVER_PRIME a no-op

Drivers must fill out the handle_to_fd and fd_to_handle hooks to
enable export/import prime functionality already. The additional
DRIVER_PRIME flag doesn't serve any real purpose, since the overall
flag doesn't even tell you whether import or export or maybe even both
is supported.

Ditch it.

This patch just makes it defunct, subsequent patches will remove it
from all the drivers.

Note this changes the userspace visible errno in some situations from
EOPNOTSUPP to ENOSYS. Userspace already needs to treat both as "no
prime support", so this should break anything.

v2: Improve commit message as suggested by Emil

Reviewed-by: Emil Velikov <emil.velikov@collabora.com>
Reviewed-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190614203615.12639-6-daniel.vetter@ffwll.ch
drivers/gpu/drm/drm_prime.c