Re: [PATCH] Driver Core update for 2.6.3-rc1

[Greg KH <greg@kroah.com>]

ChangeSet 1.1500.19.1, 2004/02/02 15:39:32-08:00, jonsmirl@yahoo.com

[PATCH] Driver core: add hotplug support for class_simple

This is needed by the DRI code.


 drivers/base/class_simple.c |   18 ++++++++++++++++++
 include/linux/device.h      |    2 ++
 2 files changed, 20 insertions(+)


diff -Nru a/drivers/base/class_simple.c b/drivers/base/class_simple.c
--- a/drivers/base/class_simple.c	Mon Feb  9 15:09:13 2004
+++ b/drivers/base/class_simple.c	Mon Feb  9 15:09:13 2004
@@ -170,6 +170,24 @@
 EXPORT_SYMBOL(class_simple_device_add);
 
 /**
+ * class_simple_set_hotplug - set the hotplug callback in the embedded struct class
+ * @cs: pointer to the struct class_simple to hold the pointer
+ * @hotplug: function pointer to the hotplug function
+ *
+ * Implement and set a hotplug function to add environment variables specific to this 
+ * class on the hotplug event.
+ */
+int class_simple_set_hotplug(struct class_simple *cs, 
+	int (*hotplug)(struct class_device *dev, char **envp, int num_envp, char *buffer, int buffer_size))
+{
+	if ((cs == NULL) || (IS_ERR(cs)))
+		return -ENODEV;
+	cs->class.hotplug = hotplug;
+	return 0;
+}
+EXPORT_SYMBOL(class_simple_set_hotplug);
+
+/**
  * class_simple_device_remove - removes a class device that was created with class_simple_device_add()
  * @dev: the dev_t of the device that was previously registered.
  *
diff -Nru a/include/linux/device.h b/include/linux/device.h
--- a/include/linux/device.h	Mon Feb  9 15:09:13 2004
+++ b/include/linux/device.h	Mon Feb  9 15:09:13 2004
@@ -253,6 +253,8 @@
 extern void class_simple_destroy(struct class_simple *cs);
 extern struct class_device *class_simple_device_add(struct class_simple *cs, dev_t dev, struct device *device, const char *fmt, ...)
 	__attribute__((format(printf,4,5)));
+extern int class_simple_set_hotplug(struct class_simple *, 
+	int (*hotplug)(struct class_device *dev, char **envp, int num_envp, char *buffer, int buffer_size));
 extern void class_simple_device_remove(dev_t dev);