hwmon: (pmbus) shrink code and remove pmbus_do_remove()

The only action currently performed in pmbus_do_remove() is removing the
debugfs hierarchy. We can schedule a devm action at probe time and remove
pmbus_do_remove() entirely from all pmbus drivers.

Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Link: https://lore.kernel.org/r/20201026105352.20359-1-brgl@bgdev.pl
[groeck: Removed references to pmbus_do_remove from documentation]
Signed-off-by: Guenter Roeck <linux@roeck-us.net>

Documentation/hwmon/pmbus-core.rst

@@ -277,12 +277,6 @@ with the pointer to struct pmbus_driver_info as additional argument. Calls
 identify function if supported. Must only be called from device probe
 function.
 
-::
-
-  void pmbus_do_remove(struct i2c_client *client);
-
-Execute driver remove function. Similar to standard driver remove function.
-
 ::
 
   const struct pmbus_driver_info

Documentation/hwmon/pmbus.rst

@@ -148,11 +148,6 @@ Emerson DS1200 power modules might look as follows::
 	return pmbus_do_probe(client, &ds1200_info);
   }
 
-  static int ds1200_remove(struct i2c_client *client)
-  {
-	return pmbus_do_remove(client);
-  }
-
   static const struct i2c_device_id ds1200_id[] = {
 	{"ds1200", 0},
 	{}
@@ -166,7 +161,6 @@ Emerson DS1200 power modules might look as follows::
 		   .name = "ds1200",
 		   },
 	.probe_new = ds1200_probe,
-	.remove = ds1200_remove,
 	.id_table = ds1200_id,
   };
 

drivers/hwmon/pmbus/adm1266.c

@@ -502,7 +502,6 @@ static struct i2c_driver adm1266_driver = {
 		   .of_match_table = adm1266_of_match,
 		  },
 	.probe_new = adm1266_probe,
-	.remove = pmbus_do_remove,
 	.id_table = adm1266_id,
 };
 

drivers/hwmon/pmbus/adm1275.c

@@ -797,7 +797,6 @@ static struct i2c_driver adm1275_driver = {
 		   .name = "adm1275",
 		   },
 	.probe_new = adm1275_probe,
-	.remove = pmbus_do_remove,
 	.id_table = adm1275_id,
 };
 

drivers/hwmon/pmbus/bel-pfe.c

@@ -121,7 +121,6 @@ static struct i2c_driver pfe_pmbus_driver = {
 		   .name = "bel-pfe",
 	},
 	.probe_new = pfe_pmbus_probe,
-	.remove = pmbus_do_remove,
 	.id_table = pfe_device_id,
 };
 

drivers/hwmon/pmbus/ibm-cffps.c

@@ -617,7 +617,6 @@ static struct i2c_driver ibm_cffps_driver = {
 		.of_match_table = ibm_cffps_of_match,
 	},
 	.probe_new = ibm_cffps_probe,
-	.remove = pmbus_do_remove,
 	.id_table = ibm_cffps_id,
 };
 

drivers/hwmon/pmbus/inspur-ipsps.c

@@ -216,7 +216,6 @@ static struct i2c_driver ipsps_driver = {
 		.of_match_table = of_match_ptr(ipsps_of_match),
 	},
 	.probe_new = ipsps_probe,
-	.remove = pmbus_do_remove,
 	.id_table = ipsps_id,
 };
 

drivers/hwmon/pmbus/ir35221.c

@@ -137,7 +137,6 @@ static struct i2c_driver ir35221_driver = {
 		.name	= "ir35221",
 	},
 	.probe_new	= ir35221_probe,
-	.remove		= pmbus_do_remove,
 	.id_table	= ir35221_id,
 };
 

drivers/hwmon/pmbus/ir38064.c

@@ -53,7 +53,6 @@ static struct i2c_driver ir38064_driver = {
 		   .name = "ir38064",
 		   },
 	.probe_new = ir38064_probe,
-	.remove = pmbus_do_remove,
 	.id_table = ir38064_id,
 };
 

drivers/hwmon/pmbus/irps5401.c

@@ -55,7 +55,6 @@ static struct i2c_driver irps5401_driver = {
 		   .name = "irps5401",
 		   },
 	.probe_new = irps5401_probe,
-	.remove = pmbus_do_remove,
 	.id_table = irps5401_id,
 };
 

drivers/hwmon/pmbus/isl68137.c

@@ -324,7 +324,6 @@ static struct i2c_driver isl68137_driver = {
 		   .name = "isl68137",
 		   },
 	.probe_new = isl68137_probe,
-	.remove = pmbus_do_remove,
 	.id_table = raa_dmpvr_id,
 };
 

drivers/hwmon/pmbus/lm25066.c

@@ -508,7 +508,6 @@ static struct i2c_driver lm25066_driver = {
 		   .name = "lm25066",
 		   },
 	.probe_new = lm25066_probe,
-	.remove = pmbus_do_remove,
 	.id_table = lm25066_id,
 };
 

drivers/hwmon/pmbus/ltc2978.c

@@ -875,7 +875,6 @@ static struct i2c_driver ltc2978_driver = {
 		   .of_match_table = of_match_ptr(ltc2978_of_match),
 		   },
 	.probe_new = ltc2978_probe,
-	.remove = pmbus_do_remove,
 	.id_table = ltc2978_id,
 };
 

drivers/hwmon/pmbus/ltc3815.c

@@ -200,7 +200,6 @@ static struct i2c_driver ltc3815_driver = {
 		   .name = "ltc3815",
 		   },
 	.probe_new = ltc3815_probe,
-	.remove = pmbus_do_remove,
 	.id_table = ltc3815_id,
 };
 

drivers/hwmon/pmbus/max16064.c

@@ -103,7 +103,6 @@ static struct i2c_driver max16064_driver = {
 		   .name = "max16064",
 		   },
 	.probe_new = max16064_probe,
-	.remove = pmbus_do_remove,
 	.id_table = max16064_id,
 };
 

drivers/hwmon/pmbus/max16601.c

@@ -302,7 +302,6 @@ static struct i2c_driver max16601_driver = {
 		   .name = "max16601",
 		   },
 	.probe_new = max16601_probe,
-	.remove = pmbus_do_remove,
 	.id_table = max16601_id,
 };
 

drivers/hwmon/pmbus/max20730.c

@@ -777,7 +777,6 @@ static struct i2c_driver max20730_driver = {
 		.of_match_table = max20730_of_match,
 	},
 	.probe_new = max20730_probe,
-	.remove = pmbus_do_remove,
 	.id_table = max20730_id,
 };
 

drivers/hwmon/pmbus/max20751.c

@@ -43,7 +43,6 @@ static struct i2c_driver max20751_driver = {
 		   .name = "max20751",
 		   },
 	.probe_new = max20751_probe,
-	.remove = pmbus_do_remove,
 	.id_table = max20751_id,
 };
 

drivers/hwmon/pmbus/max31785.c

@@ -390,7 +390,6 @@ static struct i2c_driver max31785_driver = {
 		.of_match_table = max31785_of_match,
 	},
 	.probe_new = max31785_probe,
-	.remove = pmbus_do_remove,
 	.id_table = max31785_id,
 };
 

drivers/hwmon/pmbus/max34440.c

@@ -521,7 +521,6 @@ static struct i2c_driver max34440_driver = {
 		   .name = "max34440",
 		   },
 	.probe_new = max34440_probe,
-	.remove = pmbus_do_remove,
 	.id_table = max34440_id,
 };
 

drivers/hwmon/pmbus/max8688.c

@@ -183,7 +183,6 @@ static struct i2c_driver max8688_driver = {
 		   .name = "max8688",
 		   },
 	.probe_new = max8688_probe,
-	.remove = pmbus_do_remove,
 	.id_table = max8688_id,
 };
 

drivers/hwmon/pmbus/mp2975.c

@@ -758,7 +758,6 @@ static struct i2c_driver mp2975_driver = {
 		.of_match_table = of_match_ptr(mp2975_of_match),
 	},
 	.probe_new = mp2975_probe,
-	.remove = pmbus_do_remove,
 	.id_table = mp2975_id,
 };
 

drivers/hwmon/pmbus/pmbus.c

@@ -238,7 +238,6 @@ static struct i2c_driver pmbus_driver = {
 		   .name = "pmbus",
 		   },
 	.probe_new = pmbus_probe,
-	.remove = pmbus_do_remove,
 	.id_table = pmbus_id,
 };
 

drivers/hwmon/pmbus/pmbus.h

@@ -490,7 +490,6 @@ void pmbus_clear_faults(struct i2c_client *client);
 bool pmbus_check_byte_register(struct i2c_client *client, int page, int reg);
 bool pmbus_check_word_register(struct i2c_client *client, int page, int reg);
 int pmbus_do_probe(struct i2c_client *client, struct pmbus_driver_info *info);
-int pmbus_do_remove(struct i2c_client *client);
 const struct pmbus_driver_info *pmbus_get_driver_info(struct i2c_client
 						      *client);
 int pmbus_get_fan_rate_device(struct i2c_client *client, int page, int id,

drivers/hwmon/pmbus/pmbus_core.c

@@ -2395,6 +2395,13 @@ static int pmbus_debugfs_set_pec(void *data, u64 val)
 DEFINE_DEBUGFS_ATTRIBUTE(pmbus_debugfs_ops_pec, pmbus_debugfs_get_pec,
 			 pmbus_debugfs_set_pec, "%llu\n");
 
+static void pmbus_remove_debugfs(void *data)
+{
+	struct dentry *entry = data;
+
+	debugfs_remove_recursive(entry);
+}
+
 static int pmbus_init_debugfs(struct i2c_client *client,
 			      struct pmbus_data *data)
 {
@@ -2530,7 +2537,8 @@ static int pmbus_init_debugfs(struct i2c_client *client,
 		}
 	}
 
-	return 0;
+	return devm_add_action_or_reset(data->dev,
+					pmbus_remove_debugfs, data->debugfs);
 }
 #else
 static int pmbus_init_debugfs(struct i2c_client *client,
@@ -2617,16 +2625,6 @@ int pmbus_do_probe(struct i2c_client *client, struct pmbus_driver_info *info)
 }
 EXPORT_SYMBOL_GPL(pmbus_do_probe);
 
-int pmbus_do_remove(struct i2c_client *client)
-{
-	struct pmbus_data *data = i2c_get_clientdata(client);
-
-	debugfs_remove_recursive(data->debugfs);
-
-	return 0;
-}
-EXPORT_SYMBOL_GPL(pmbus_do_remove);
-
 struct dentry *pmbus_get_debugfs_dir(struct i2c_client *client)
 {
 	struct pmbus_data *data = i2c_get_clientdata(client);

drivers/hwmon/pmbus/pxe1610.c

@@ -131,7 +131,6 @@ static struct i2c_driver pxe1610_driver = {
 			.name = "pxe1610",
 			},
 	.probe_new = pxe1610_probe,
-	.remove = pmbus_do_remove,
 	.id_table = pxe1610_id,
 };
 

drivers/hwmon/pmbus/tps40422.c

@@ -43,7 +43,6 @@ static struct i2c_driver tps40422_driver = {
 		   .name = "tps40422",
 		   },
 	.probe_new = tps40422_probe,
-	.remove = pmbus_do_remove,
 	.id_table = tps40422_id,
 };
 

drivers/hwmon/pmbus/tps53679.c

@@ -251,7 +251,6 @@ static struct i2c_driver tps53679_driver = {
 		.of_match_table = of_match_ptr(tps53679_of_match),
 	},
 	.probe_new = tps53679_probe,
-	.remove = pmbus_do_remove,
 	.id_table = tps53679_id,
 };
 

drivers/hwmon/pmbus/ucd9000.c

@@ -621,7 +621,6 @@ static struct i2c_driver ucd9000_driver = {
 		.of_match_table = of_match_ptr(ucd9000_of_match),
 	},
 	.probe_new = ucd9000_probe,
-	.remove = pmbus_do_remove,
 	.id_table = ucd9000_id,
 };
 

drivers/hwmon/pmbus/ucd9200.c

@@ -201,7 +201,6 @@ static struct i2c_driver ucd9200_driver = {
 		.of_match_table = of_match_ptr(ucd9200_of_match),
 	},
 	.probe_new = ucd9200_probe,
-	.remove = pmbus_do_remove,
 	.id_table = ucd9200_id,
 };
 

drivers/hwmon/pmbus/xdpe12284.c

@@ -160,7 +160,6 @@ static struct i2c_driver xdpe122_driver = {
 		.of_match_table = of_match_ptr(xdpe122_of_match),
 	},
 	.probe_new = xdpe122_probe,
-	.remove = pmbus_do_remove,
 	.id_table = xdpe122_id,
 };
 

drivers/hwmon/pmbus/zl6100.c

@@ -396,7 +396,6 @@ static struct i2c_driver zl6100_driver = {
 		   .name = "zl6100",
 		   },
 	.probe_new = zl6100_probe,
-	.remove = pmbus_do_remove,
 	.id_table = zl6100_id,
 };