driver core: Convert some drivers to CLASS_ATTR_STRING

Convert some drivers who export a single string as class attribute
to the new class_attr_string functions. This removes redundant
code all over.

Signed-off-by: Andi Kleen <ak@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

1 files changed, 4 insertions, 11 deletions

diff --git a/drivers/staging/asus_oled/asus_oled.c b/drivers/staging/asus_oled/asus_oled.c
index 7d93f50a0a6..7ebecc92c61 100644
--- a/drivers/staging/asus_oled/asus_oled.c
+++ b/drivers/staging/asus_oled/asus_oled.c
@@ -770,15 +770,8 @@ static struct usb_driver oled_driver = {
         .id_table =     id_table,
 };
 
-static ssize_t version_show(struct class *dev,
-                            struct class_attribute *attr,
-                            char *buf)
-{
-        return sprintf(buf, ASUS_OLED_UNDERSCORE_NAME " %s\n",
-                       ASUS_OLED_VERSION);
-}
-
-static CLASS_ATTR(version, S_IRUGO, version_show, NULL);
+static CLASS_ATTR_STRING(version, S_IRUGO,
+                        ASUS_OLED_UNDERSCORE_NAME " " ASUS_OLED_VERSION);
 
 static int __init asus_oled_init(void)
 {
@@ -790,7 +783,7 @@ static int __init asus_oled_init(void)
                 return PTR_ERR(oled_class);
         }
 
-        retval = class_create_file(oled_class, &class_attr_version);
+        retval = class_create_file(oled_class, &class_attr_version.attr);
         if (retval) {
                 err("Error creating class version file");
                 goto error;
@@ -812,7 +805,7 @@ error:
 
 static void __exit asus_oled_exit(void)
 {
-        class_remove_file(oled_class, &class_attr_version);
+        class_remove_file(oled_class, &class_attr_version.attr);
         class_destroy(oled_class);
 
         usb_deregister(&oled_driver);