This is a note to let you know that I've just added the patch titled drm/msm/disp/dpu1: program 3d_merge only if block is attached to the 5.11-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: drm-msm-disp-dpu1-program-3d_merge-only-if-block-is-.patch and it can be found in the queue-5.11 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. commit efcf3fcacda2f511aad30ad1c80df1a40e22e464 Author: Kalyan Thota <kalyan_t@xxxxxxxxxxxxxx> Date: Fri Apr 2 04:54:53 2021 -0700 drm/msm/disp/dpu1: program 3d_merge only if block is attached [ Upstream commit 12aca1ce9ee33af3751aec5e55a5900747cbdd4b ] Update the 3d merge as active in the data path only if the hw block is selected in the configuration. Reported-by: Stephen Boyd <swboyd@xxxxxxxxxxxx> Fixes: 73bfb790ac78 ("msm:disp:dpu1: setup display datapath for SC7180 target") Signed-off-by: Kalyan Thota <kalyan_t@xxxxxxxxxxxxxx> Message-Id: <1617364493-13518-1-git-send-email-kalyan_t@xxxxxxxxxxxxxx> Signed-off-by: Rob Clark <robdclark@xxxxxxxxxxxx> Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_ctl.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_ctl.c index 8981cfa9dbc3..92e6f1b94738 100644 --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_ctl.c +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_ctl.c @@ -496,7 +496,9 @@ static void dpu_hw_ctl_intf_cfg_v1(struct dpu_hw_ctl *ctx, DPU_REG_WRITE(c, CTL_TOP, mode_sel); DPU_REG_WRITE(c, CTL_INTF_ACTIVE, intf_active); - DPU_REG_WRITE(c, CTL_MERGE_3D_ACTIVE, BIT(cfg->merge_3d - MERGE_3D_0)); + if (cfg->merge_3d) + DPU_REG_WRITE(c, CTL_MERGE_3D_ACTIVE, + BIT(cfg->merge_3d - MERGE_3D_0)); } static void dpu_hw_ctl_intf_cfg(struct dpu_hw_ctl *ctx,