From 23681e479129854305da1da32f7f1eaf635ef22c Mon Sep 17 00:00:00 2001 From: Greg Kroah-Hartman Date: Wed, 14 Jun 2006 12:14:34 -0700 Subject: [PATCH] Driver core: allow struct device to have a dev_t This is the first step in moving class_device to being replaced by struct device. It allows struct device to export a dev_t and makes it easy to dynamically create and destroy struct device as long as they are associated with a specific class. Cc: Kay Sievers Signed-off-by: Greg Kroah-Hartman --- include/linux/device.h | 14 ++++++++++++++ 1 file changed, 14 insertions(+) (limited to 'include') diff --git a/include/linux/device.h b/include/linux/device.h index ade10dd6b77..b473f427891 100644 --- a/include/linux/device.h +++ b/include/linux/device.h @@ -142,6 +142,7 @@ struct class { struct subsystem subsys; struct list_head children; + struct list_head devices; struct list_head interfaces; struct semaphore sem; /* locks both the children and interfaces lists */ @@ -305,6 +306,7 @@ struct device { struct kobject kobj; char bus_id[BUS_ID_SIZE]; /* position on parent bus */ struct device_attribute uevent_attr; + struct device_attribute *devt_attr; struct semaphore sem; /* semaphore to synchronize calls to * its driver. @@ -332,6 +334,11 @@ struct device { struct dma_coherent_mem *dma_mem; /* internal for coherent mem override */ + /* class_device migration path */ + struct list_head node; + struct class *class; /* optional*/ + dev_t devt; /* dev_t, creates the sysfs "dev" */ + void (*release)(struct device * dev); }; @@ -373,6 +380,13 @@ extern int device_attach(struct device * dev); extern void driver_attach(struct device_driver * drv); extern void device_reprobe(struct device *dev); +/* + * Easy functions for dynamically creating devices on the fly + */ +extern struct device *device_create(struct class *cls, struct device *parent, + dev_t devt, char *fmt, ...) + __attribute__((format(printf,4,5))); +extern void device_destroy(struct class *cls, dev_t devt); /* * Platform "fixup" functions - allow the platform to have their say -- cgit v1.2.3-70-g09d2