There is currently a race condition occuring when accessing
vblank_refcount. Therefore, vblank irq timeouts may occur.
Avoid any vblank irq timeouts by stablizing the use of vblank_refcount.
Changes from prior versions:
v4: - Removed vblank_ctl_lock from dpu_encoder_virt, so it is only a
parameter of dpu_encoder_phys.
- Switch from atomic refcnt to a simple int counter as mutex has
now been added
v3: - Mistakenly did not change wording of patch #2 in last version.
It is done now.
v2: - Slightly changed wording of patch #2 commit message
Paloma Arellano (1):
drm/msm/dpu: Add mutex lock in control vblank irq
drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c | 1 -
.../gpu/drm/msm/disp/dpu1/dpu_encoder_phys.h | 4 ++-
.../drm/msm/disp/dpu1/dpu_encoder_phys_cmd.c | 32 ++++++++++++------
.../drm/msm/disp/dpu1/dpu_encoder_phys_vid.c | 33 ++++++++++++-------
4 files changed, 47 insertions(+), 23 deletions(-)
--
2.39.2
