hwmon: (w83795) Merge w83795_create_files and w83795_remove_files

Functions w83795_create_files and w83795_remove_files iterate over
the same set of files, just calling a different function. Merge them
into a single function which takes the action as a parameter. This
saves code, and also ensure that file creation and deletion are in
sync.

Signed-off-by: Jean Delvare <khali@linux-fr.org>

1 files changed, 17 insertions, 38 deletions

diff --git a/drivers/hwmon/w83795.c b/drivers/hwmon/w83795.c
index 309e2e5a187e..ca8b0aec53e6 100644
--- a/drivers/hwmon/w83795.c
+++ b/drivers/hwmon/w83795.c
@@ -1777,7 +1777,8 @@ static int w83795_detect(struct i2c_client *client,
         return 0;
 }
 
-static int w83795_create_files(struct device *dev)
+static int w83795_handle_files(struct device *dev, int (*fn)(struct device *,
+                               const struct device_attribute *))
 {
         struct w83795_data *data = dev_get_drvdata(dev);
         int err, i;
@@ -1785,7 +1786,7 @@ static int w83795_create_files(struct device *dev)
         for (i = 0; i < ARRAY_SIZE(w83795_in); i++) {
                 if (!(data->has_in & (1 << (i / 6))))
                         continue;
-                err = device_create_file(dev, &w83795_in[i].dev_attr);
+                err = fn(dev, &w83795_in[i].dev_attr);
                 if (err)
                         return err;
         }
@@ -1793,21 +1794,20 @@ static int w83795_create_files(struct device *dev)
         for (i = 0; i < ARRAY_SIZE(w83795_fan); i++) {
                 if (!(data->has_fan & (1 << (i / 5))))
                         continue;
-                err = device_create_file(dev, &w83795_fan[i].dev_attr);
+                err = fn(dev, &w83795_fan[i].dev_attr);
                 if (err)
                         return err;
         }
 
         for (i = 0; i < ARRAY_SIZE(sda_single_files); i++) {
-                err = device_create_file(dev, &sda_single_files[i].dev_attr);
+                err = fn(dev, &sda_single_files[i].dev_attr);
                 if (err)
                         return err;
         }
 
         if (data->chip_type == w83795g) {
                 for (i = 0; i < ARRAY_SIZE(w83795_left_reg); i++) {
-                        err = device_create_file(dev,
-                                                 &w83795_left_reg[i].dev_attr);
+                        err = fn(dev, &w83795_left_reg[i].dev_attr);
                         if (err)
                                 return err;
                 }
@@ -1816,7 +1816,7 @@ static int w83795_create_files(struct device *dev)
         for (i = 0; i < ARRAY_SIZE(w83795_temp); i++) {
                 if (!(data->has_temp & (1 << (i / 29))))
                         continue;
-                err = device_create_file(dev, &w83795_temp[i].dev_attr);
+                err = fn(dev, &w83795_temp[i].dev_attr);
                 if (err)
                         return err;
         }
@@ -1825,14 +1825,14 @@ static int w83795_create_files(struct device *dev)
                 for (i = 0; i < ARRAY_SIZE(w83795_dts); i++) {
                         if (!(data->has_dts & (1 << (i / 8))))
                                 continue;
-                        err = device_create_file(dev, &w83795_dts[i].dev_attr);
+                        err = fn(dev, &w83795_dts[i].dev_attr);
                         if (err)
                                 return err;
                 }
         }
 
         for (i = 0; i < ARRAY_SIZE(w83795_static); i++) {
-                err = device_create_file(dev, &w83795_static[i].dev_attr);
+                err = fn(dev, &w83795_static[i].dev_attr);
                 if (err)
                         return err;
         }
@@ -1840,33 +1840,12 @@ static int w83795_create_files(struct device *dev)
         return 0;
 }
 
-static void w83795_remove_files(struct device *dev)
+/* We need a wrapper that fits in w83795_handle_files */
+static int device_remove_file_wrapper(struct device *dev,
+                                      const struct device_attribute *attr)
 {
-        struct w83795_data *data = dev_get_drvdata(dev);
-        int i;
-
-        for (i = 0; i < ARRAY_SIZE(w83795_in); i++)
-                device_remove_file(dev, &w83795_in[i].dev_attr);
-
-        for (i = 0; i < ARRAY_SIZE(w83795_fan); i++)
-                device_remove_file(dev, &w83795_fan[i].dev_attr);
-
-        for (i = 0; i < ARRAY_SIZE(sda_single_files); i++)
-                device_remove_file(dev, &sda_single_files[i].dev_attr);
-
-        if (data->chip_type == w83795g) {
-                for (i = 0; i < ARRAY_SIZE(w83795_left_reg); i++)
-                        device_remove_file(dev, &w83795_left_reg[i].dev_attr);
-        }
-
-        for (i = 0; i < ARRAY_SIZE(w83795_temp); i++)
-                device_remove_file(dev, &w83795_temp[i].dev_attr);
-
-        for (i = 0; i < ARRAY_SIZE(w83795_dts); i++)
-                device_remove_file(dev, &w83795_dts[i].dev_attr);
-
-        for (i = 0; i < ARRAY_SIZE(w83795_static); i++)
-                device_remove_file(dev, &w83795_static[i].dev_attr);
+        device_remove_file(dev, attr);
+        return 0;
 }
 
 static int w83795_probe(struct i2c_client *client,
@@ -2093,7 +2072,7 @@ static int w83795_probe(struct i2c_client *client,
         data->beep_enable =
                 (w83795_read(client, W83795_REG_BEEP(5)) >> 7) & 0x01;
 
-        err = w83795_create_files(dev);
+        err = w83795_handle_files(dev, device_create_file);
         if (err)
                 goto exit_remove;
 
@@ -2106,7 +2085,7 @@ static int w83795_probe(struct i2c_client *client,
         return 0;
 
 exit_remove:
-        w83795_remove_files(dev);
+        w83795_handle_files(dev, device_remove_file_wrapper);
         kfree(data);
 exit:
         return err;
@@ -2117,7 +2096,7 @@ static int w83795_remove(struct i2c_client *client)
         struct w83795_data *data = i2c_get_clientdata(client);
 
         hwmon_device_unregister(data->hwmon_dev);
-        w83795_remove_files(&client->dev);
+        w83795_handle_files(&client->dev, device_remove_file_wrapper);
         kfree(data);
 
         return 0;