Re: [PATCH v2 01/13] drm/msm/dpu: cleanup dpu_kms_hw_init error path

[Jessica Zhang <quic_jesszhan@xxxxxxxxxxx>]

On 7/7/2023 4:12 PM, Dmitry Baryshkov wrote:
> It was noticed that dpu_kms_hw_init()'s error path contains several
> labels which point to the same code path. Replace all of them with a
> single label.
>
> Suggested-by: Konrad Dybcio <konrad.dybcio@xxxxxxxxxx>
> Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@xxxxxxxxxx>
> ---
>   drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c | 21 +++++++++------------
>   1 file changed, 9 insertions(+), 12 deletions(-)
>
> diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c
> index c11b3ab572ab..e7ac02e92f42 100644
> --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c
> +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c
> @@ -1037,7 +1037,7 @@ static int dpu_kms_hw_init(struct msm_kms *kms)
>   	if (!dpu_kms->catalog) {
>   		DPU_ERROR("device config not known!\n");
>   		rc = -EINVAL;
> -		goto power_error;
> +		goto err_pm_put;
>   	}
>   
>   	/*
> @@ -1047,13 +1047,13 @@ static int dpu_kms_hw_init(struct msm_kms *kms)
>   	rc = _dpu_kms_mmu_init(dpu_kms);
>   	if (rc) {
>   		DPU_ERROR("dpu_kms_mmu_init failed: %d\n", rc);
> -		goto power_error;
> +		goto err_pm_put;
>   	}
>   
>   	rc = dpu_rm_init(&dpu_kms->rm, dpu_kms->catalog, dpu_kms->mmio);
>   	if (rc) {
>   		DPU_ERROR("rm init failed: %d\n", rc);
> -		goto power_error;
> +		goto err_pm_put;
>   	}
>   
>   	dpu_kms->rm_init = true;
> @@ -1065,7 +1065,7 @@ static int dpu_kms_hw_init(struct msm_kms *kms)
>   		rc = PTR_ERR(dpu_kms->hw_mdp);
>   		DPU_ERROR("failed to get hw_mdp: %d\n", rc);
>   		dpu_kms->hw_mdp = NULL;
> -		goto power_error;
> +		goto err_pm_put;
>   	}
>   
>   	for (i = 0; i < dpu_kms->catalog->vbif_count; i++) {
> @@ -1076,7 +1076,7 @@ static int dpu_kms_hw_init(struct msm_kms *kms)
>   		if (IS_ERR(hw)) {
>   			rc = PTR_ERR(hw);
>   			DPU_ERROR("failed to init vbif %d: %d\n", vbif->id, rc);
> -			goto power_error;
> +			goto err_pm_put;
>   		}
>   
>   		dpu_kms->hw_vbif[vbif->id] = hw;
> @@ -1092,7 +1092,7 @@ static int dpu_kms_hw_init(struct msm_kms *kms)
>   	rc = dpu_core_perf_init(&dpu_kms->perf, dpu_kms->catalog->perf, max_core_clk_rate);
>   	if (rc) {
>   		DPU_ERROR("failed to init perf %d\n", rc);
> -		goto perf_err;
> +		goto err_pm_put;
>   	}
>   
>   	dpu_kms->hw_intr = dpu_hw_intr_init(dpu_kms->mmio, dpu_kms->catalog);
> @@ -1100,7 +1100,7 @@ static int dpu_kms_hw_init(struct msm_kms *kms)
>   		rc = PTR_ERR(dpu_kms->hw_intr);
>   		DPU_ERROR("hw_intr init failed: %d\n", rc);
>   		dpu_kms->hw_intr = NULL;
> -		goto hw_intr_init_err;
> +		goto err_pm_put;
>   	}
>   
>   	dev->mode_config.min_width = 0;
> @@ -1125,7 +1125,7 @@ static int dpu_kms_hw_init(struct msm_kms *kms)
>   	rc = _dpu_kms_drm_obj_init(dpu_kms);
>   	if (rc) {
>   		DPU_ERROR("modeset init failed: %d\n", rc);
> -		goto drm_obj_init_err;
> +		goto err_pm_put;
>   	}
>   
>   	dpu_vbif_init_memtypes(dpu_kms);
> @@ -1134,10 +1134,7 @@ static int dpu_kms_hw_init(struct msm_kms *kms)
>   
>   	return 0;
>   
> -drm_obj_init_err:

Hey Dmitry,

The change itself LGTM -- however, it seems that there's a dependency on 
the core perf cleanup series that wasn't listed in the cover letter.

Thanks,

Jessica Zhang

> -hw_intr_init_err:
> -perf_err:
> -power_error:
> +err_pm_put:
>   	pm_runtime_put_sync(&dpu_kms->pdev->dev);
>   error:
>   	_dpu_kms_hw_destroy(dpu_kms);
> --
> 2.39.2