thermal/drivers/qcom/tsens: Rework debugfs file structure

The current tsens debugfs structure is composed by:
- a tsens dir in debugfs with a version file
- a directory for each tsens istance with sensors file to dump all the
  sensors value.

This works on the assumption that we have the same version for each
istance but this assumption seems fragile and with more than one tsens
istance results in the version file not tracking each of them.

A better approach is to just create a subdirectory for each tsens
istance and put there version and sensors debugfs file.

Using this new implementation results in less code since debugfs entry
are created only on successful tsens probe.

Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
Link: https://lore.kernel.org/r/20221022125657.22530-4-ansuelsmth@gmail.com
Signed-off-by: Daniel Lezcano <daniel.lezcano@kernel.org>

diff --git a/drivers/thermal/qcom/tsens.c b/drivers/thermal/qcom/tsens.c
index 5f8d8f04351eb33d577c26708bd13f0f80149c7f..b5b136ff323f9a38fe58f335c5433acb97868a13 100644 (file)
--- a/drivers/thermal/qcom/tsens.c
+++ b/drivers/thermal/qcom/tsens.c
@@ -725,21 +725,14 @@ 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)
-               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);
+       debugfs_create_file("version", 0444, priv->debug, pdev, &dbg_version_fops);
        debugfs_create_file("sensors", 0444, priv->debug, pdev, &dbg_sensors_fops);
 }
 #else