* the specific driver's probe to initial the matched device.
* @remove: Called when a device removed from this bus.
* @shutdown: Called at shut-down time to quiesce the device.
+ *
+ * @online: Called to put the device back online (after offlining it).
+ * @offline: Called to put the device offline for hot-removal. May fail.
+ *
* @suspend: Called when a device on this bus wants to go to sleep mode.
* @resume: Called to bring a device on this bus out of sleep mode.
* @pm: Power management operations of this bus, callback the specific
int (*remove)(struct device *dev);
void (*shutdown)(struct device *dev);
+ int (*online)(struct device *dev);
+ int (*offline)(struct device *dev);
+
int (*suspend)(struct device *dev, pm_message_t state);
int (*resume)(struct device *dev);
* device (i.e. the bus driver that discovered the device).
* @iommu_group: IOMMU group the device belongs to.
*
+ * @offline_disabled: If set, the device is permanently online.
+ * @offline: Set after successful invocation of bus type's .offline().
+ *
* At the lowest level, every device in a Linux system is represented by an
* instance of struct device. The device structure contains the information
* that the device model core needs to model the system. Most subsystems,
void (*release)(struct device *dev);
struct iommu_group *iommu_group;
+
+ bool offline_disabled:1;
+ bool offline:1;
};
static inline struct device *kobj_to_dev(struct kobject *kobj)
extern void *dev_get_drvdata(const struct device *dev);
extern int dev_set_drvdata(struct device *dev, void *data);
+static inline bool device_supports_offline(struct device *dev)
+{
+ return dev->bus && dev->bus->offline && dev->bus->online;
+}
+
+extern void lock_device_hotplug(void);
+extern void unlock_device_hotplug(void);
+extern int device_offline(struct device *dev);
+extern int device_online(struct device *dev);
/*
* Root device objects for grouping under /sys/devices
*/