linux-kernel - [PATCH v2 2/2] thermal: qcom: tsens: simplify debugfs init function

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Message-Id: <20220914154635.2928-2-ansuelsmth@gmail.com>
Date:   Wed, 14 Sep 2022 17:46:35 +0200
From:   Christian Marangi <ansuelsmth@...il.com>
To:     Andy Gross <agross@...nel.org>,
        Bjorn Andersson <andersson@...nel.org>,
        Konrad Dybcio <konrad.dybcio@...ainline.org>,
        Amit Kucheria <amitk@...nel.org>,
        Thara Gopinath <thara.gopinath@...il.com>,
        "Rafael J. Wysocki" <rafael@...nel.org>,
        Daniel Lezcano <daniel.lezcano@...aro.org>,
        Zhang Rui <rui.zhang@...el.com>, linux-arm-msm@...r.kernel.org,
        linux-pm@...r.kernel.org, linux-kernel@...r.kernel.org
Cc:     Christian Marangi <ansuelsmth@...il.com>,
        Thara Gopinath <thara.gopinath@...aro.org>
Subject: [PATCH v2 2/2] thermal: qcom: tsens: simplify debugfs init function

Simplify debugfs init function.
- Add check for existing dev directory.
- Fix wrong version in dbg_version_show (with version 0.0.0, 0.1.0 was
  incorrectly reported)

Signed-off-by: Christian Marangi <ansuelsmth@...il.com>
Reviewed-by: Thara Gopinath <thara.gopinath@...aro.org>
---
v2:
- Change sob tag with new name

 drivers/thermal/qcom/tsens.c | 14 +++++---------
 1 file changed, 5 insertions(+), 9 deletions(-)

diff --git a/drivers/thermal/qcom/tsens.c b/drivers/thermal/qcom/tsens.c
index cc2965b8d409..ff82626cecef 100644
--- a/drivers/thermal/qcom/tsens.c
+++ b/drivers/thermal/qcom/tsens.c
@@ -692,7 +692,7 @@ static int dbg_version_show(struct seq_file *s, void *data)
 			return ret;
 		seq_printf(s, "%d.%d.%d\n", maj_ver, min_ver, step_ver);
 	} else {
-		seq_puts(s, "0.1.0\n");
+		seq_printf(s, "0.%d.0\n", priv->feat->ver_major);
 	}
 
 	return 0;
@@ -704,21 +704,17 @@ DEFINE_SHOW_ATTRIBUTE(dbg_sensors);
 static void tsens_debug_init(struct platform_device *pdev)
 {
 	struct tsens_priv *priv = platform_get_drvdata(pdev);
-	struct dentry *root, *file;
 
-	root = debugfs_lookup("tsens", NULL);
-	if (!root)
+	priv->debug_root = debugfs_lookup("tsens", NULL);
+	if (!priv->debug_root)
 		priv->debug_root = debugfs_create_dir("tsens", NULL);
-	else
-		priv->debug_root = root;
 
-	file = debugfs_lookup("version", priv->debug_root);
-	if (!file)
+	if (!debugfs_lookup("version", priv->debug_root))
 		debugfs_create_file("version", 0444, priv->debug_root,
 				    pdev, &dbg_version_fops);
 
 	/* A directory for each instance of the TSENS IP */
-	priv->debug = debugfs_create_dir(dev_name(&pdev->dev), priv->debug_root);
+	priv->debug = debugfs_lookup(dev_name(&pdev->dev), priv->debug_root);
 	debugfs_create_file("sensors", 0444, priv->debug, pdev, &dbg_sensors_fops);
 }
 #else
-- 
2.37.2