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, 9 deletions

diff --git a/drivers/misc/phantom.c b/drivers/misc/phantom.c
index d30ae9560309..779aa8ebe4cf 100644
--- a/drivers/misc/phantom.c
+++ b/drivers/misc/phantom.c
@@ -497,12 +497,7 @@ static struct pci_driver phantom_pci_driver = {
         .resume = phantom_resume
 };
 
-static ssize_t phantom_show_version(struct class *cls, struct class_attribute *attr, char *buf)
-{
-        return sprintf(buf, PHANTOM_VERSION "\n");
-}
-
-static CLASS_ATTR(version, 0444, phantom_show_version, NULL);
+static CLASS_ATTR_STRING(version, 0444, PHANTOM_VERSION);
 
 static int __init phantom_init(void)
 {
@@ -515,7 +510,7 @@ static int __init phantom_init(void)
                 printk(KERN_ERR "phantom: can't register phantom class\n");
                 goto err;
         }
-        retval = class_create_file(phantom_class, &class_attr_version);
+        retval = class_create_file(phantom_class, &class_attr_version.attr);
         if (retval) {
                 printk(KERN_ERR "phantom: can't create sysfs version file\n");
                 goto err_class;
@@ -541,7 +536,7 @@ static int __init phantom_init(void)
 err_unchr:
         unregister_chrdev_region(dev, PHANTOM_MAX_MINORS);
 err_attr:
-        class_remove_file(phantom_class, &class_attr_version);
+        class_remove_file(phantom_class, &class_attr_version.attr);
 err_class:
         class_destroy(phantom_class);
 err:
@@ -554,7 +549,7 @@ static void __exit phantom_exit(void)
 
         unregister_chrdev_region(MKDEV(phantom_major, 0), PHANTOM_MAX_MINORS);
 
-        class_remove_file(phantom_class, &class_attr_version);
+        class_remove_file(phantom_class, &class_attr_version.attr);
         class_destroy(phantom_class);
 
         pr_debug("phantom: module successfully removed\n");