kernel/linux.git/drivers/gpu/drm/drm_atomic_uapi.c, branch linux-4.20.y

gpu/drm: Fix lock held when returning to user space.

2019-01-22T20:09:57+00:00

commit 4089e272ac61603931beb024d4d640de2cb390e0 upstream. We need to call drm_modeset_acquire_fini() when drm_atomic_state_alloc() failed or call drm_modeset_acquire_init() after drm_atomic_state_alloc() succeeded. Signed-off-by: Tetsuo Handa Reported-by: syzbot Signed-off-by: Daniel Vetter Link: https://patchwork.freedesktop.org/patch/msgid/1547115571-21219-1-git-send-email-penguin-kernel@I-love.SAKURA.ne.jp Signed-off-by: Greg Kroah-Hartman

drm: Differentiate the lack of an interface from invalid parameter

2018-09-14T16:29:47+00:00

If the ioctl is not supported on a particular piece of HW/driver combination, report ENOTSUP (aka EOPNOTSUPP) so that it can be easily distinguished from both the lack of the ioctl and from a regular invalid parameter. v2: Across all the kms ioctls we had a mixture of reporting EINVAL, ENODEV and a few ENOTSUPP (most where EINVAL) for a failed drm_core_check_feature(). Update everybody to report ENOTSUPP. v3: ENOTSUPP is an internal errno! It's value (524) does not correspond to a POSIX errno, the one we want is ENOTSUP. However, uapi/asm-generic/errno.h doesn't include ENOTSUP but man errno says "ENOTSUP and EOPNOTSUPP have the same value on Linux, but according to POSIX.1 these error values should be distinct." so use EOPNOTSUPP as its equivalent. Signed-off-by: Chris Wilson Cc: Daniel Vetter Cc: Ville Syrjälä Reviewed-by: Daniel Vetter #v2 Link: https://patchwork.freedesktop.org/patch/msgid/20180913192050.24812-1-chris@chris-wilson.co.uk

drm: extract drm_atomic_uapi.c

2018-09-09T12:19:18+00:00

This leaves all the commit/check and state handling in drm_atomic.c, while pulling all the uapi glue and the huge ioctl itself into a seprate file. This seems to almost perfectly split the rather big drm_atomic.c file into 2 equal sizes. Also adjust the kerneldoc and type a very terse overview text. v2: Rebase. v3: Fix tiny typo. v4: - Fixup armada, newly converted atomic driver hooray! - Fixup msm/dpu1, newly added too. Signed-off-by: Daniel Vetter Cc: David Airlie Cc: Gustavo Padovan Cc: Maarten Lankhorst Cc: Sean Paul Cc: Jani Nikula Cc: Joonas Lahtinen Cc: Rodrigo Vivi Cc: Rob Clark Cc: Eric Anholt Cc: intel-gfx@lists.freedesktop.org Cc: linux-arm-msm@vger.kernel.org Cc: freedreno@lists.freedesktop.org Acked-by: Rodrigo Vivi Link: https://patchwork.freedesktop.org/patch/msgid/20180905135711.28370-7-daniel.vetter@ffwll.ch