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[0/2] drm: update the ioctl handler

Message ID 20210813085450.32494-1-desmondcheongzx@gmail.com (mailing list archive)
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Series drm: update the ioctl handler | expand

Message

Desmond Cheong Zhi Xi Aug. 13, 2021, 8:54 a.m. UTC 
Hi,

Finally got around to it. This patchset implements some updates to the
drm ioctl handler that were first raised by Daniel Vetter in [1].
Namely:

- Flush concurrent processes that can change the modeset when
DRM masters are set/dropped or a lease is revoked
- Unexport drm_ioctl_permit()

Thoughts and comments would be very appreciated.

Link: https://lore.kernel.org/lkml/YN9kAFcfGoB13x7f@phenom.ffwll.local/ [1]

Best wishes,
Desmond

Desmond Cheong Zhi Xi (2):
  drm: avoid races with modesetting rights
  drm: unexport drm_ioctl_permit

 drivers/gpu/drm/drm_auth.c           | 17 +++++++++---
 drivers/gpu/drm/drm_client_modeset.c | 10 ++++---
 drivers/gpu/drm/drm_drv.c            |  2 ++
 drivers/gpu/drm/drm_fb_helper.c      | 20 ++++++++------
 drivers/gpu/drm/drm_internal.h       |  5 ++--
 drivers/gpu/drm/drm_ioctl.c          | 40 +++++++++++++++-------------
 include/drm/drm_device.h             | 11 ++++++++
 include/drm/drm_ioctl.h              |  8 +++++-
 8 files changed, 77 insertions(+), 36 deletions(-)