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Subject[PATCH v2 3/3] hwmon: (tps23861) create unique debugfs directory per device
Date
On systems with more than one tps23861, creating the debugfs directory
for additional devices fails with

debugfs: Directory 'tps23861' with parent '/' already present!

To resolve this, include the hwmon device name in the directory name.
Since the name is unique, this guarantees that the debugfs directory
is unique.

Signed-off-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
---
drivers/hwmon/tps23861.c | 14 +++++++++++---
1 file changed, 11 insertions(+), 3 deletions(-)

diff --git a/drivers/hwmon/tps23861.c b/drivers/hwmon/tps23861.c
index 019009b71a90..a3d7d6b75a26 100644
--- a/drivers/hwmon/tps23861.c
+++ b/drivers/hwmon/tps23861.c
@@ -503,9 +503,17 @@ static int tps23861_port_status_show(struct seq_file *s, void *data)

DEFINE_SHOW_ATTRIBUTE(tps23861_port_status);

-static void tps23861_init_debugfs(struct tps23861_data *data)
+static void tps23861_init_debugfs(struct tps23861_data *data,
+ struct device *hwmon_dev)
{
- data->debugfs_dir = debugfs_create_dir(data->client->name, NULL);
+ const char *debugfs_name;
+
+ debugfs_name = devm_kasprintf(&data->client->dev, GFP_KERNEL, "%s-%s",
+ data->client->name, dev_name(hwmon_dev));
+ if (!debugfs_name)
+ return;
+
+ data->debugfs_dir = debugfs_create_dir(debugfs_name, NULL);

debugfs_create_file("port_status",
0400,
@@ -554,7 +562,7 @@ static int tps23861_probe(struct i2c_client *client)
if (IS_ERR(hwmon_dev))
return PTR_ERR(hwmon_dev);

- tps23861_init_debugfs(data);
+ tps23861_init_debugfs(data, hwmon_dev);

return 0;
}
--
2.34.3
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