Re: [PATCH 5/6] drm/msm: dpu: Remove empty/useless labels

[Jeykumar Sankaran <jsanka@xxxxxxxxxxxxxx>]

On 2018-09-20 07:58, Sean Paul wrote:
> From: Sean Paul <seanpaul@xxxxxxxxxxxx>
>
> I noticed an empty label while driving by and decided to use
> coccinelle to see if there were any more. Here's the spatch and the
> invocation:
>
> ---
>
> @@
> identifier lbl;
> expression E;
> @@
>
> - goto lbl;
> + return E;
> ...
> - lbl:
> 	return E;
>
> @@
> identifier lbl;
> @@
>
> - goto lbl;
> + return;
> ...
> - lbl:
> -	return;
>
> ---
> spatch --allow-inconsistent-paths --sp-file file.spatch --dir
> drivers/gpu/drm/msm/disp/dpu1 --in-place
> ---
>
> Signed-off-by: Sean Paul <seanpaul@xxxxxxxxxxxx>
> ---
>  drivers/gpu/drm/msm/disp/dpu1/dpu_core_perf.c     |  5 ++---
>  .../gpu/drm/msm/disp/dpu1/dpu_encoder_phys_cmd.c  |  8 ++------
>  drivers/gpu/drm/msm/disp/dpu1/dpu_formats.c       |  5 ++---
>  drivers/gpu/drm/msm/disp/dpu1/dpu_hw_pingpong.c   |  3 +--
>  drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c           | 15 ++++++---------
>  drivers/gpu/drm/msm/disp/dpu1/dpu_plane.c         | 14 ++++++--------
>  drivers/gpu/drm/msm/disp/dpu1/dpu_vbif.c          |  4 +---
>  7 files changed, 20 insertions(+), 34 deletions(-)
>
> diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_core_perf.c
> b/drivers/gpu/drm/msm/disp/dpu1/dpu_core_perf.c
> index 41c5191f9056..affc9738e2b5 100644
> --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_core_perf.c
> +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_core_perf.c
> @@ -68,7 +68,7 @@ static bool 
> _dpu_core_video_mode_intf_connected(struct
> drm_crtc *crtc)
>  	bool intf_connected = false;
>
>  	if (!crtc)
> -		goto end;
> +		return intf_connected;
This can be further cleaned up by removing this intermediate var.
>  	drm_for_each_crtc(tmp_crtc, crtc->dev) {
>  		if ((dpu_crtc_get_intf_mode(tmp_crtc) == INTF_MODE_VIDEO)
> &&
> @@ -76,11 +76,10 @@ static bool 
> _dpu_core_video_mode_intf_connected(struct
> drm_crtc *crtc)
>  			DPU_DEBUG("video interface connected crtc:%d\n",
>  				tmp_crtc->base.id);
>  			intf_connected = true;
> -			goto end;
> +			return intf_connected;
>  		}
>  	}
>
> -end:
>  	return intf_connected;
>  }
>
> diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_cmd.c
> b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_cmd.c
> index c30ae05b3349..24a98f4e1f44 100644
> --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_cmd.c
> +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_cmd.c
> @@ -496,14 +496,11 @@ static void dpu_encoder_phys_cmd_enable_helper(
>  	_dpu_encoder_phys_cmd_pingpong_config(phys_enc);
>
>  	if (!dpu_encoder_phys_cmd_is_master(phys_enc))
> -		goto skip_flush;
> +		return;
>
>  	ctl = phys_enc->hw_ctl;
>  	ctl->ops.get_bitmask_intf(ctl, &flush_mask, phys_enc->intf_idx);
>  	ctl->ops.update_pending_flush(ctl, flush_mask);
> -
> -skip_flush:
> -	return;
>  }
>
>  static void dpu_encoder_phys_cmd_enable(struct dpu_encoder_phys
> *phys_enc)
> @@ -797,7 +794,7 @@ struct dpu_encoder_phys *dpu_encoder_phys_cmd_init(
>  	if (!cmd_enc) {
>  		ret = -ENOMEM;
>  		DPU_ERROR("failed to allocate\n");
> -		goto fail;
> +		return ERR_PTR(ret);
>  	}
>  	phys_enc = &cmd_enc->base;
>  	phys_enc->hw_mdptop = p->dpu_kms->hw_mdp;
> @@ -855,6 +852,5 @@ struct dpu_encoder_phys *dpu_encoder_phys_cmd_init(
>
>  	return phys_enc;
>
> -fail:
>  	return ERR_PTR(ret);
>  }
> diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_formats.c
> b/drivers/gpu/drm/msm/disp/dpu1/dpu_formats.c
> index bfcd165e96df..0aa9b8e1ae70 100644
> --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_formats.c
> +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_formats.c
> @@ -921,7 +921,7 @@ static int _dpu_format_populate_addrs_ubwc(
>  			+ layout->plane_size[2] + layout->plane_size[3];
>
>  		if (!meta)
> -			goto done;
> +			return 0;
>
>  		/* configure Y metadata plane */
>  		layout->plane_addr[2] = base_addr;
> @@ -952,12 +952,11 @@ static int _dpu_format_populate_addrs_ubwc(
>  		layout->plane_addr[1] = 0;
>
>  		if (!meta)
> -			goto done;
> +			return 0;
>
>  		layout->plane_addr[2] = base_addr;
>  		layout->plane_addr[3] = 0;
>  	}
> -done:
>  	return 0;
>  }
>
> diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_pingpong.c
> b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_pingpong.c
> index cc3a623903f4..52fca13da176 100644
> --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_pingpong.c
> +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_pingpong.c
> @@ -177,7 +177,7 @@ static u32 dpu_hw_pp_get_line_count(struct
> dpu_hw_pingpong *pp)
>  	height = DPU_REG_READ(c, PP_SYNC_CONFIG_HEIGHT) & 0xFFFF;
>
>  	if (height < init)
> -		goto line_count_exit;
> +		return line;
>
>  	line = DPU_REG_READ(c, PP_INT_COUNT_VAL) & 0xFFFF;
>
> @@ -186,7 +186,6 @@ static u32 dpu_hw_pp_get_line_count(struct
> dpu_hw_pingpong *pp)
>  	else
>  		line -= init;
>
> -line_count_exit:
>  	return line;
>  }
>
> diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c
> b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c
> index 0a683e65a9f3..d51992014e41 100644
> --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c
> +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c
> @@ -979,20 +979,20 @@ static int dpu_kms_hw_init(struct msm_kms *kms)
>
>  	if (!kms) {
>  		DPU_ERROR("invalid kms\n");
> -		goto end;
> +		return rc;
>  	}
>
>  	dpu_kms = to_dpu_kms(kms);
>  	dev = dpu_kms->dev;
>  	if (!dev) {
>  		DPU_ERROR("invalid device\n");
> -		goto end;
> +		return rc;
>  	}
>
>  	rc = dpu_dbg_init(&dpu_kms->pdev->dev);
>  	if (rc) {
>  		DRM_ERROR("failed to init dpu dbg: %d\n", rc);
> -		goto end;
> +		return rc;
>  	}
>
>  	priv = dev->dev_private;
> @@ -1173,7 +1173,6 @@ static int dpu_kms_hw_init(struct msm_kms *kms)
>  	_dpu_kms_hw_destroy(dpu_kms);
>  dbg_destroy:
>  	dpu_dbg_destroy();
> -end:
>  	return rc;
>  }
>
> @@ -1278,7 +1277,7 @@ static int __maybe_unused 
> dpu_runtime_suspend(struct
> device *dev)
>  	ddev = dpu_kms->dev;
>  	if (!ddev) {
>  		DPU_ERROR("invalid drm_device\n");
> -		goto exit;
> +		return rc;
>  	}
>
>  	rc = dpu_power_resource_enable(&dpu_kms->phandle,
> @@ -1290,7 +1289,6 @@ static int __maybe_unused 
> dpu_runtime_suspend(struct
> device *dev)
>  	if (rc)
>  		DPU_ERROR("clock disable failed rc:%d\n", rc);
>
> -exit:
>  	return rc;
>  }
>
> @@ -1305,13 +1303,13 @@ static int __maybe_unused
> dpu_runtime_resume(struct device *dev)
>  	ddev = dpu_kms->dev;
>  	if (!ddev) {
>  		DPU_ERROR("invalid drm_device\n");
> -		goto exit;
> +		return rc;
>  	}
>
>  	rc = msm_dss_enable_clk(mp->clk_config, mp->num_clk, true);
>  	if (rc) {
>  		DPU_ERROR("clock enable failed rc:%d\n", rc);
> -		goto exit;
> +		return rc;
>  	}
>
>  	rc = dpu_power_resource_enable(&dpu_kms->phandle,
> @@ -1319,7 +1317,6 @@ static int __maybe_unused 
> dpu_runtime_resume(struct
> device *dev)
>  	if (rc)
>  		DPU_ERROR("resource enable failed: %d\n", rc);
>
> -exit:
>  	return rc;
>  }
>
> diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_plane.c
> b/drivers/gpu/drm/msm/disp/dpu1/dpu_plane.c
> index 2b23b95f4a6f..1fa0ba0019ed 100644
> --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_plane.c
> +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_plane.c
> @@ -432,13 +432,12 @@ int dpu_plane_danger_signal_ctrl(struct drm_plane
> *plane, bool enable)
>  	pdpu = to_dpu_plane(plane);
>
>  	if (!pdpu->is_rt_pipe)
> -		goto end;
> +		return 0;
>
>  	pm_runtime_get_sync(&dpu_kms->pdev->dev);
>  	_dpu_plane_set_qos_ctrl(plane, enable, DPU_PLANE_QOS_PANIC_CTRL);
>  	pm_runtime_put_sync(&dpu_kms->pdev->dev);
>
> -end:
>  	return 0;
>  }
>
> @@ -1744,24 +1743,24 @@ struct drm_plane *dpu_plane_init(struct 
> drm_device
> *dev,
>
>  	if (!dev) {
>  		DPU_ERROR("[%u]device is NULL\n", pipe);
> -		goto exit;
> +		return ERR_PTR(ret);
>  	}
>
>  	priv = dev->dev_private;
>  	if (!priv) {
>  		DPU_ERROR("[%u]private data is NULL\n", pipe);
> -		goto exit;
> +		return ERR_PTR(ret);
>  	}
>
>  	if (!priv->kms) {
>  		DPU_ERROR("[%u]invalid KMS reference\n", pipe);
> -		goto exit;
> +		return ERR_PTR(ret);
>  	}
>  	kms = to_dpu_kms(priv->kms);
>
>  	if (!kms->catalog) {
>  		DPU_ERROR("[%u]invalid catalog reference\n", pipe);
> -		goto exit;
> +		return ERR_PTR(ret);
>  	}
>
>  	/* create and zero local structure */
> @@ -1769,7 +1768,7 @@ struct drm_plane *dpu_plane_init(struct 
> drm_device
> *dev,
>  	if (!pdpu) {
>  		DPU_ERROR("[%u]failed to allocate local plane struct\n",
> pipe);
>  		ret = -ENOMEM;
> -		goto exit;
> +		return ERR_PTR(ret);
>  	}
>
>  	/* cache local stuff for later */
> @@ -1855,6 +1854,5 @@ struct drm_plane *dpu_plane_init(struct 
> drm_device
> *dev,
>  		dpu_hw_sspp_destroy(pdpu->pipe_hw);
>  clean_plane:
>  	kfree(pdpu);
> -exit:
>  	return ERR_PTR(ret);
>  }
> diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_vbif.c
> b/drivers/gpu/drm/msm/disp/dpu1/dpu_vbif.c
> index 295528292296..ff5091d2555d 100644
> --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_vbif.c
> +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_vbif.c
> @@ -191,7 +191,7 @@ void dpu_vbif_set_ot_limit(struct dpu_kms *dpu_kms,
>  	ot_lim = _dpu_vbif_get_ot_limit(vbif, params) & 0xFF;
>
>  	if (ot_lim == 0)
> -		goto exit;
> +		return;
>
>  	trace_dpu_perf_set_ot(params->num, params->xin_id, ot_lim,
>  		params->vbif_idx);
> @@ -210,8 +210,6 @@ void dpu_vbif_set_ot_limit(struct dpu_kms *dpu_kms,
>
>  	if (forced_on)
>  		mdp->ops.setup_clk_force_ctrl(mdp, params->clk_ctrl,
> false);
> -exit:
> -	return;
>  }
>
>  void dpu_vbif_set_qos_remap(struct dpu_kms *dpu_kms,

--
Jeykumar S