On Wed, Dec 11, 2024 at 11:50:26AM -0800, Abhinav Kumar wrote:
> Similar to the r_pipe sspp protect, add a check to protect
> the pipe state prints to avoid NULL ptr dereference for cases when
> the state is dumped without a corresponding atomic_check() where the
> pipe->sspp is assigned.
>
> Fixes: 31f7148fd370 ("drm/msm/dpu: move pstate->pipe initialization to
> dpu_plane_atomic_check")
> Reported-by: Stephen Boyd <[email protected]>
> Closes: https://gitlab.freedesktop.org/drm/msm/-/issues/67
> Signed-off-by: Abhinav Kumar <[email protected]>
> ---
> To: Rob Clark <[email protected]>
> To: Dmitry Baryshkov <[email protected]>
> To: Sean Paul <[email protected]>
> To: Marijn Suijten <[email protected]>
> To: David Airlie <[email protected]>
> To: Simona Vetter <[email protected]>
> Cc: [email protected]
> Cc: [email protected]
> Cc: [email protected]
> Cc: [email protected]
> Cc: Stephen Boyd <[email protected]>
> ---
> Changes in v2:
> - move pstate->stage out of the pipe->sspp check
> - add reported-by credits for Stephen
> - Link to v1:
> https://lore.kernel.org/r/[email protected]
> ---
> drivers/gpu/drm/msm/disp/dpu1/dpu_plane.c | 15 +++++++++------
> 1 file changed, 9 insertions(+), 6 deletions(-)
>
Reviewed-by: Dmitry Baryshkov <[email protected]>
--
With best wishes
Dmitry
