From 707db375ecec313862926d1885d64da0b2b66c4c Mon Sep 17 00:00:00 2001 From: Dmitry Baryshkov Date: Tue, 3 Sep 2024 06:22:56 +0300 Subject: drm/msm/dpu: check for the plane pitch overflow Check that the plane pitch doesn't overflow the maximum pitch size allowed by the hardware. Reviewed-by: Abhinav Kumar Tested-by: Abhinav Kumar # sc7280 Signed-off-by: Dmitry Baryshkov Patchwork: https://patchwork.freedesktop.org/patch/612253/ Link: https://lore.kernel.org/r/20240903-dpu-mode-config-width-v6-13-617e1ecc4b7a@linaro.org --- drivers/gpu/drm/msm/disp/dpu1/dpu_hw_sspp.h | 2 ++ drivers/gpu/drm/msm/disp/dpu1/dpu_plane.c | 6 +++++- 2 files changed, 7 insertions(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_sspp.h b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_sspp.h index 4a910b808687..8998d1862e16 100644 --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_sspp.h +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_sspp.h @@ -12,6 +12,8 @@ struct dpu_hw_sspp; +#define DPU_SSPP_MAX_PITCH_SIZE 0xffff + /** * Flags */ diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_plane.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_plane.c index 3045bda8a7b7..f686588bf896 100644 --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_plane.c +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_plane.c @@ -782,7 +782,7 @@ static int dpu_plane_atomic_check(struct drm_plane *plane, { struct drm_plane_state *new_plane_state = drm_atomic_get_new_plane_state(state, plane); - int ret = 0, min_scale; + int i, ret = 0, min_scale; struct dpu_plane *pdpu = to_dpu_plane(plane); struct dpu_kms *kms = _dpu_plane_get_kms(&pdpu->base); u64 max_mdp_clk_rate = kms->perf.max_core_clk_rate; @@ -856,6 +856,10 @@ static int dpu_plane_atomic_check(struct drm_plane *plane, return ret; } + for (i = 0; i < pstate->layout.num_planes; i++) + if (pstate->layout.plane_pitch[i] > DPU_SSPP_MAX_PITCH_SIZE) + return -E2BIG; + fmt = msm_framebuffer_format(new_plane_state->fb); max_linewidth = pdpu->catalog->caps->max_linewidth; -- cgit v1.2.3