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authorStefan Achatz <erazor_de@users.sourceforge.net>2010-11-26 19:57:33 +0000
committerJiri Kosina <jkosina@suse.cz>2011-01-08 01:11:00 +0100
commit5012aada506cb8b570e46579077c0ec5b82ebd5d (patch)
treecf2d49567af63b16f7cdbef80ae5662938bd539c /drivers/hid/hid-roccat.c
parentc97415a72521071c235e0879f9a600014afd87b1 (diff)
HID: roccat: use class for char device for sysfs attribute creation
Adding sysfs attributes to an already created device raises no userland notification. Now the device drivers associate the devices attributes with a class and use this for roccat event char device creation. Signed-off-by: Stefan Achatz <erazor_de@users.sourceforge.net> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Diffstat (limited to 'drivers/hid/hid-roccat.c')
-rw-r--r--drivers/hid/hid-roccat.c17
1 files changed, 5 insertions, 12 deletions
diff --git a/drivers/hid/hid-roccat.c b/drivers/hid/hid-roccat.c
index 4bc7a93dc1f5..a14c579ea781 100644
--- a/drivers/hid/hid-roccat.c
+++ b/drivers/hid/hid-roccat.c
@@ -67,7 +67,6 @@ struct roccat_reader {
};
static int roccat_major;
-static struct class *roccat_class;
static struct cdev roccat_cdev;
static struct roccat_device *devices[ROCCAT_MAX_DEVICES];
@@ -289,12 +288,14 @@ EXPORT_SYMBOL_GPL(roccat_report_event);
/*
* roccat_connect() - create a char device for special event output
+ * @class: the class thats used to create the device. Meant to hold device
+ * specific sysfs attributes.
* @hid: the hid device the char device should be connected to.
*
* Return value is minor device number in Range [0, ROCCAT_MAX_DEVICES] on
* success, a negative error code on failure.
*/
-int roccat_connect(struct hid_device *hid)
+int roccat_connect(struct class *klass, struct hid_device *hid)
{
unsigned int minor;
struct roccat_device *device;
@@ -320,7 +321,7 @@ int roccat_connect(struct hid_device *hid)
return -EINVAL;
}
- device->dev = device_create(roccat_class, &hid->dev,
+ device->dev = device_create(klass, &hid->dev,
MKDEV(roccat_major, minor), NULL,
"%s%s%d", "roccat", hid->driver->name, minor);
@@ -361,7 +362,7 @@ void roccat_disconnect(int minor)
device->exist = 0; /* TODO exist maybe not needed */
- device_destroy(roccat_class, MKDEV(roccat_major, minor));
+ device_destroy(device->dev->class, MKDEV(roccat_major, minor));
if (device->open) {
hid_hw_close(device->hid);
@@ -396,13 +397,6 @@ static int __init roccat_init(void)
return retval;
}
- roccat_class = class_create(THIS_MODULE, "roccat");
- if (IS_ERR(roccat_class)) {
- retval = PTR_ERR(roccat_class);
- unregister_chrdev_region(dev_id, ROCCAT_MAX_DEVICES);
- return retval;
- }
-
cdev_init(&roccat_cdev, &roccat_ops);
cdev_add(&roccat_cdev, dev_id, ROCCAT_MAX_DEVICES);
@@ -414,7 +408,6 @@ static void __exit roccat_exit(void)
dev_t dev_id = MKDEV(roccat_major, 0);
cdev_del(&roccat_cdev);
- class_destroy(roccat_class);
unregister_chrdev_region(dev_id, ROCCAT_MAX_DEVICES);
}

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