hwmon: (ltc4282) Use per-client debugfs entry

The I2C core now offers a debugfs-directory per client. Use it and
remove the custom handling.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Link: https://lore.kernel.org/r/20250125123941.36729-10-wsa+renesas@sang-engineering.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>

diff --git a/drivers/hwmon/ltc4282.c b/drivers/hwmon/ltc4282.c
index 4f608a3790fb729d917a3e5f338097e86f2b62df..7f38d269623965c22424dea837ff451bb880f81e 100644 (file)
--- a/drivers/hwmon/ltc4282.c
+++ b/drivers/hwmon/ltc4282.c
@@ -1674,47 +1674,19 @@ static int ltc4282_show_power1_bad_fault_log(void *arg, u64 *val)
 DEFINE_DEBUGFS_ATTRIBUTE(ltc4282_power1_bad_fault_log,
                         ltc4282_show_power1_bad_fault_log, NULL, "%llu\n");
 
-static void ltc4282_debugfs_remove(void *dir)
+static void ltc4282_debugfs_init(struct ltc4282_state *st, struct i2c_client *i2c)
 {
-       debugfs_remove_recursive(dir);
-}
-
-static void ltc4282_debugfs_init(struct ltc4282_state *st,
-                                struct i2c_client *i2c,
-                                const struct device *hwmon)
-{
-       const char *debugfs_name;
-       struct dentry *dentry;
-       int ret;
-
-       if (!IS_ENABLED(CONFIG_DEBUG_FS))
-               return;
-
-       debugfs_name = devm_kasprintf(&i2c->dev, GFP_KERNEL, "ltc4282-%s",
-                                     dev_name(hwmon));
-       if (!debugfs_name)
-               return;
-
-       dentry = debugfs_create_dir(debugfs_name, NULL);
-       if (IS_ERR(dentry))
-               return;
-
-       ret = devm_add_action_or_reset(&i2c->dev, ltc4282_debugfs_remove,
-                                      dentry);
-       if (ret)
-               return;
-
-       debugfs_create_file_unsafe("power1_bad_fault_log", 0400, dentry, st,
+       debugfs_create_file_unsafe("power1_bad_fault_log", 0400, i2c->debugfs, st,
                                   &ltc4282_power1_bad_fault_log);
-       debugfs_create_file_unsafe("in0_fet_short_fault_log", 0400, dentry, st,
+       debugfs_create_file_unsafe("in0_fet_short_fault_log", 0400, i2c->debugfs, st,
                                   &ltc4282_fet_short_fault_log);
-       debugfs_create_file_unsafe("in0_fet_bad_fault_log", 0400, dentry, st,
+       debugfs_create_file_unsafe("in0_fet_bad_fault_log", 0400, i2c->debugfs, st,
                                   &ltc4282_fet_bad_fault_log);
-       debugfs_create_file_unsafe("in1_crit_fault_log", 0400, dentry, st,
+       debugfs_create_file_unsafe("in1_crit_fault_log", 0400, i2c->debugfs, st,
                                   &ltc4282_in1_crit_fault_log);
-       debugfs_create_file_unsafe("in1_lcrit_fault_log", 0400, dentry, st,
+       debugfs_create_file_unsafe("in1_lcrit_fault_log", 0400, i2c->debugfs, st,
                                   &ltc4282_in1_lcrit_fault_log);
-       debugfs_create_file_unsafe("curr1_crit_fault_log", 0400, dentry, st,
+       debugfs_create_file_unsafe("curr1_crit_fault_log", 0400, i2c->debugfs, st,
                                   &ltc4282_curr1_crit_fault_log);
 }
 
@@ -1757,7 +1729,7 @@ static int ltc4282_probe(struct i2c_client *i2c)
        if (IS_ERR(hwmon))
                return PTR_ERR(hwmon);
 
-       ltc4282_debugfs_init(st, i2c, hwmon);
+       ltc4282_debugfs_init(st, i2c);
 
        return 0;
 }