ACPI: bgrt: take advantage of binary sysfs groups

Attribute groups now can handle binary sysfs attributes, so clean up the
code here by using a binary attribute array.  This saves us the extra
call to create the binary attribute at saves 6 lines overall.

Cc: Len Brown <lenb@kernel.org>
Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

--
 I can take this in my driver-core tree if someone from ACPI acks it,
 otherwise, feel free to take it through the ACPI trees instead, just
 let me know.

 drivers/acpi/bgrt.c |   26 ++++++++++----------------
 1 file changed, 10 insertions(+), 16 deletions(-)

1 files changed, 10 insertions, 16 deletions

diff --git a/drivers/acpi/bgrt.c b/drivers/acpi/bgrt.c
index be6039958545..7a4128d96117 100644
--- a/drivers/acpi/bgrt.c
+++ b/drivers/acpi/bgrt.c
@@ -51,20 +51,14 @@ static ssize_t show_yoffset(struct device *dev,
 }
 static DEVICE_ATTR(yoffset, S_IRUGO, show_yoffset, NULL);
 
-static ssize_t show_image(struct file *file, struct kobject *kobj,
+static ssize_t image_read(struct file *file, struct kobject *kobj,
                struct bin_attribute *attr, char *buf, loff_t off, size_t count)
 {
         memcpy(buf, attr->private + off, count);
         return count;
 }
 
-static struct bin_attribute image_attr = {
-        .attr = {
-                .name = "image",
-                .mode = S_IRUGO,
-        },
-        .read = show_image,
-};
+static BIN_ATTR_RO(image, 0);   /* size gets filled in later */
 
 static struct attribute *bgrt_attributes[] = {
         &dev_attr_version.attr,
@@ -75,8 +69,14 @@ static struct attribute *bgrt_attributes[] = {
         NULL,
 };
 
+static struct bin_attribute *bgrt_bin_attributes[] = {
+        &bin_attr_image,
+        NULL,
+};
+
 static struct attribute_group bgrt_attribute_group = {
         .attrs = bgrt_attributes,
+        .bin_attrs = bgrt_bin_attributes,
 };
 
 static int __init bgrt_init(void)
@@ -87,8 +87,8 @@ static int __init bgrt_init(void)
                 return -ENODEV;
 
         sysfs_bin_attr_init(&image_attr);
-        image_attr.private = bgrt_image;
-        image_attr.size = bgrt_image_size;
+        bin_attr_image.private = bgrt_image;
+        bin_attr_image.size = bgrt_image_size;
 
         bgrt_kobj = kobject_create_and_add("bgrt", acpi_kobj);
         if (!bgrt_kobj)
@@ -98,14 +98,8 @@ static int __init bgrt_init(void)
         if (ret)
                 goto out_kobject;
 
-        ret = sysfs_create_bin_file(bgrt_kobj, &image_attr);
-        if (ret)
-                goto out_group;
-
         return 0;
 
-out_group:
-        sysfs_remove_group(bgrt_kobj, &bgrt_attribute_group);
 out_kobject:
         kobject_put(bgrt_kobj);
         return ret;