Commit 65f44679 authored by Greg KH's avatar Greg KH Committed by Greg Kroah-Hartman
Browse files

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: default avatarRafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: default avatarGreg 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(-)
parent a7492451

drivers/acpi/bgrt.c

+10 −16
Original line number Diff line number Diff line
@@ -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;

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