Re: [PATCH] Driver core changes for 2.5.69

Greg KH (greg@kroah.com)
Fri, 9 May 2003 16:53:59 -0700


ChangeSet 1.1097, 2003/05/09 16:26:28-07:00, greg@kroah.com

[PATCH] driver core: Add driver symlink to class devices in sysfs.

Thanks to Mike Anderson for the idea for this.

drivers/base/class.c | 17 +++++++++++++++++
1 files changed, 17 insertions(+)

diff -Nru a/drivers/base/class.c b/drivers/base/class.c
--- a/drivers/base/class.c Fri May 9 16:40:29 2003
+++ b/drivers/base/class.c Fri May 9 16:40:29 2003
@@ -133,6 +133,21 @@
sysfs_remove_link(&class_dev->kobj, "device");
}

+static int class_device_driver_link(struct class_device * class_dev)
+{
+ if ((class_dev->dev) && (class_dev->dev->driver))
+ return sysfs_create_link(&class_dev->kobj,
+ &class_dev->dev->driver->kobj, "driver");
+ return 0;
+}
+
+static void class_device_driver_unlink(struct class_device * class_dev)
+{
+ if ((class_dev->dev) && (class_dev->dev->driver))
+ sysfs_remove_link(&class_dev->kobj, "driver");
+}
+
+
#define to_class_dev(obj) container_of(obj,struct class_device,kobj)
#define to_class_dev_attr(_attr) container_of(_attr,struct class_device_attribute,attr)

@@ -265,6 +280,7 @@
}

class_device_dev_link(class_dev);
+ class_device_driver_link(class_dev);

register_done:
if (error && parent)
@@ -298,6 +314,7 @@

if (class_dev->dev) {
class_device_dev_unlink(class_dev);
+ class_device_driver_unlink(class_dev);
put_device(class_dev->dev);
}

-
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