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authorDouglas Anderson <dianders@chromium.org>2021-04-23 09:58:51 -0700
committerDouglas Anderson <dianders@chromium.org>2021-05-03 13:21:08 -0700
commit52d54819c8aedca0dd7354291822999ef83aad3b (patch)
treec6c7edb778618e81bc582d25bbad0ffa516fd822 /drivers/gpu/drm/bridge
parentdea2500a820c0005bf0092d77d77eb9ca819ca1f (diff)
drm/bridge: ti-sn65dsi86: Clean debugfs code
Let's cleanup the debugfs code to: - Check for errors. - Use devm to manage freeing, which also means we don't need to store a pointer in our structure. Signed-off-by: Douglas Anderson <dianders@chromium.org> Acked-by: Linus Walleij <linus.walleij@linaro.org> Link: https://patchwork.freedesktop.org/patch/msgid/20210423095743.v5.5.I5fe072753290c6a77eda736ebd5778e17b7cb0fb@changeid
Diffstat (limited to 'drivers/gpu/drm/bridge')
-rw-r--r--drivers/gpu/drm/bridge/ti-sn65dsi86.c33
1 files changed, 21 insertions, 12 deletions
diff --git a/drivers/gpu/drm/bridge/ti-sn65dsi86.c b/drivers/gpu/drm/bridge/ti-sn65dsi86.c
index 443b532f6c6b..6f2a04fb9918 100644
--- a/drivers/gpu/drm/bridge/ti-sn65dsi86.c
+++ b/drivers/gpu/drm/bridge/ti-sn65dsi86.c
@@ -118,7 +118,6 @@
* @aux: Our aux channel.
* @bridge: Our bridge.
* @connector: Our connector.
- * @debugfs: Used for managing our debugfs.
* @host_node: Remote DSI node.
* @dsi: Our MIPI DSI source.
* @edid: Detected EDID of eDP panel.
@@ -146,7 +145,6 @@ struct ti_sn65dsi86 {
struct drm_dp_aux aux;
struct drm_bridge bridge;
struct drm_connector connector;
- struct dentry *debugfs;
struct edid *edid;
struct device_node *host_node;
struct mipi_dsi_device *dsi;
@@ -245,18 +243,31 @@ static int status_show(struct seq_file *s, void *data)
DEFINE_SHOW_ATTRIBUTE(status);
-static void ti_sn65dsi86_debugfs_init(struct ti_sn65dsi86 *pdata)
+static void ti_sn65dsi86_debugfs_remove(void *data)
{
- pdata->debugfs = debugfs_create_dir(dev_name(pdata->dev), NULL);
-
- debugfs_create_file("status", 0600, pdata->debugfs, pdata,
- &status_fops);
+ debugfs_remove_recursive(data);
}
-static void ti_sn65dsi86_debugfs_remove(struct ti_sn65dsi86 *pdata)
+static void ti_sn65dsi86_debugfs_init(struct ti_sn65dsi86 *pdata)
{
- debugfs_remove_recursive(pdata->debugfs);
- pdata->debugfs = NULL;
+ struct device *dev = pdata->dev;
+ struct dentry *debugfs;
+ int ret;
+
+ debugfs = debugfs_create_dir(dev_name(dev), NULL);
+
+ /*
+ * We might get an error back if debugfs wasn't enabled in the kernel
+ * so let's just silently return upon failure.
+ */
+ if (IS_ERR_OR_NULL(debugfs))
+ return;
+
+ ret = devm_add_action_or_reset(dev, ti_sn65dsi86_debugfs_remove, debugfs);
+ if (ret)
+ return;
+
+ debugfs_create_file("status", 0600, debugfs, pdata, &status_fops);
}
/* Connector funcs */
@@ -1317,8 +1328,6 @@ static int ti_sn65dsi86_remove(struct i2c_client *client)
kfree(pdata->edid);
- ti_sn65dsi86_debugfs_remove(pdata);
-
drm_bridge_remove(&pdata->bridge);
of_node_put(pdata->host_node);