linux-kernel - [PATCH v2] drm/msm/dsi: Drop the redundant fail label

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Message-Id: <20230111011006.6238-1-jiasheng@iscas.ac.cn>
Date:   Wed, 11 Jan 2023 09:10:06 +0800
From:   Jiasheng Jiang <jiasheng@...as.ac.cn>
To:     dianders@...omium.org
Cc:     dmitry.baryshkov@...aro.org, robdclark@...il.com,
        quic_abhinavk@...cinc.com, sean@...rly.run, airlied@...il.com,
        daniel@...ll.ch, marijn.suijten@...ainline.org, vkoul@...nel.org,
        marex@...x.de, vladimir.lypak@...il.com,
        linux-arm-msm@...r.kernel.org, dri-devel@...ts.freedesktop.org,
        freedreno@...ts.freedesktop.org, linux-kernel@...r.kernel.org,
        Jiasheng Jiang <jiasheng@...as.ac.cn>
Subject: [PATCH v2] drm/msm/dsi: Drop the redundant fail label

Drop the redundant fail label and change the "goto fail" into "return ret"
since they are the same.

Reviewed-by: Doug Anderson <dianders@...omium.org>
Signed-off-by: Jiasheng Jiang <jiasheng@...as.ac.cn>
---
Changelog:

v1 -> v2:

1. No change of the error handling of the irq_of_parse_and_map.
---
 drivers/gpu/drm/msm/dsi/dsi_host.c | 24 ++++++++----------------
 1 file changed, 8 insertions(+), 16 deletions(-)

diff --git a/drivers/gpu/drm/msm/dsi/dsi_host.c b/drivers/gpu/drm/msm/dsi/dsi_host.c
index 89aadd3b3202..de615c505def 100644
--- a/drivers/gpu/drm/msm/dsi/dsi_host.c
+++ b/drivers/gpu/drm/msm/dsi/dsi_host.c
@@ -1883,8 +1883,7 @@ int msm_dsi_host_init(struct msm_dsi *msm_dsi)
 
 	msm_host = devm_kzalloc(&pdev->dev, sizeof(*msm_host), GFP_KERNEL);
 	if (!msm_host) {
-		ret = -ENOMEM;
-		goto fail;
+		return -ENOMEM;
 	}
 
 	msm_host->pdev = pdev;
@@ -1893,31 +1892,28 @@ int msm_dsi_host_init(struct msm_dsi *msm_dsi)
 	ret = dsi_host_parse_dt(msm_host);
 	if (ret) {
 		pr_err("%s: failed to parse dt\n", __func__);
-		goto fail;
+		return ret;
 	}
 
 	msm_host->ctrl_base = msm_ioremap_size(pdev, "dsi_ctrl", &msm_host->ctrl_size);
 	if (IS_ERR(msm_host->ctrl_base)) {
 		pr_err("%s: unable to map Dsi ctrl base\n", __func__);
-		ret = PTR_ERR(msm_host->ctrl_base);
-		goto fail;
+		return PTR_ERR(msm_host->ctrl_base);
 	}
 
 	pm_runtime_enable(&pdev->dev);
 
 	msm_host->cfg_hnd = dsi_get_config(msm_host);
 	if (!msm_host->cfg_hnd) {
-		ret = -EINVAL;
 		pr_err("%s: get config failed\n", __func__);
-		goto fail;
+		return -EINVAL;
 	}
 	cfg = msm_host->cfg_hnd->cfg;
 
 	msm_host->id = dsi_host_get_id(msm_host);
 	if (msm_host->id < 0) {
-		ret = msm_host->id;
 		pr_err("%s: unable to identify DSI host index\n", __func__);
-		goto fail;
+		return msm_host->id;
 	}
 
 	/* fixup base address by io offset */
@@ -1927,19 +1923,18 @@ int msm_dsi_host_init(struct msm_dsi *msm_dsi)
 					    cfg->regulator_data,
 					    &msm_host->supplies);
 	if (ret)
-		goto fail;
+		return ret;
 
 	ret = dsi_clk_init(msm_host);
 	if (ret) {
 		pr_err("%s: unable to initialize dsi clks\n", __func__);
-		goto fail;
+		return ret;
 	}
 
 	msm_host->rx_buf = devm_kzalloc(&pdev->dev, SZ_4K, GFP_KERNEL);
 	if (!msm_host->rx_buf) {
-		ret = -ENOMEM;
 		pr_err("%s: alloc rx temp buf failed\n", __func__);
-		goto fail;
+		return -ENOMEM;
 	}
 
 	ret = devm_pm_opp_set_clkname(&pdev->dev, "byte");
@@ -1983,9 +1978,6 @@ int msm_dsi_host_init(struct msm_dsi *msm_dsi)
 
 	DBG("Dsi Host %d initialized", msm_host->id);
 	return 0;
-
-fail:
-	return ret;
 }
 
 void msm_dsi_host_destroy(struct mipi_dsi_host *host)
-- 
2.25.1