mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-24 22:57:27 +07:00
5247aecfe6
This patch fixes a bug introduced in commit
49b420a13f.
If a instance of bus_type doesn't have .match method,
all .probe of drivers in the bus should be called, or else
the .probe have not a chance to be called.
Signed-off-by: Ming Lei <tom.leiming@gmail.com>
Reported-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
137 lines
4.7 KiB
C
137 lines
4.7 KiB
C
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/**
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* struct bus_type_private - structure to hold the private to the driver core portions of the bus_type structure.
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*
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* @subsys - the struct kset that defines this bus. This is the main kobject
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* @drivers_kset - the list of drivers associated with this bus
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* @devices_kset - the list of devices associated with this bus
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* @klist_devices - the klist to iterate over the @devices_kset
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* @klist_drivers - the klist to iterate over the @drivers_kset
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* @bus_notifier - the bus notifier list for anything that cares about things
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* on this bus.
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* @bus - pointer back to the struct bus_type that this structure is associated
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* with.
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*
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* This structure is the one that is the actual kobject allowing struct
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* bus_type to be statically allocated safely. Nothing outside of the driver
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* core should ever touch these fields.
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*/
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struct bus_type_private {
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struct kset subsys;
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struct kset *drivers_kset;
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struct kset *devices_kset;
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struct klist klist_devices;
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struct klist klist_drivers;
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struct blocking_notifier_head bus_notifier;
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unsigned int drivers_autoprobe:1;
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struct bus_type *bus;
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};
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struct driver_private {
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struct kobject kobj;
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struct klist klist_devices;
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struct klist_node knode_bus;
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struct module_kobject *mkobj;
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struct device_driver *driver;
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};
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#define to_driver(obj) container_of(obj, struct driver_private, kobj)
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/**
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* struct class_private - structure to hold the private to the driver core portions of the class structure.
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*
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* @class_subsys - the struct kset that defines this class. This is the main kobject
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* @class_devices - list of devices associated with this class
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* @class_interfaces - list of class_interfaces associated with this class
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* @class_dirs - "glue" directory for virtual devices associated with this class
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* @class_mutex - mutex to protect the children, devices, and interfaces lists.
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* @class - pointer back to the struct class that this structure is associated
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* with.
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*
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* This structure is the one that is the actual kobject allowing struct
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* class to be statically allocated safely. Nothing outside of the driver
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* core should ever touch these fields.
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*/
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struct class_private {
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struct kset class_subsys;
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struct klist class_devices;
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struct list_head class_interfaces;
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struct kset class_dirs;
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struct mutex class_mutex;
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struct class *class;
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};
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#define to_class(obj) \
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container_of(obj, struct class_private, class_subsys.kobj)
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/**
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* struct device_private - structure to hold the private to the driver core portions of the device structure.
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*
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* @klist_children - klist containing all children of this device
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* @knode_parent - node in sibling list
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* @knode_driver - node in driver list
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* @knode_bus - node in bus list
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* @device - pointer back to the struct class that this structure is
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* associated with.
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*
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* Nothing outside of the driver core should ever touch these fields.
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*/
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struct device_private {
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struct klist klist_children;
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struct klist_node knode_parent;
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struct klist_node knode_driver;
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struct klist_node knode_bus;
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struct device *device;
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};
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#define to_device_private_parent(obj) \
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container_of(obj, struct device_private, knode_parent)
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#define to_device_private_driver(obj) \
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container_of(obj, struct device_private, knode_driver)
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#define to_device_private_bus(obj) \
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container_of(obj, struct device_private, knode_bus)
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/* initialisation functions */
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extern int devices_init(void);
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extern int buses_init(void);
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extern int classes_init(void);
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extern int firmware_init(void);
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#ifdef CONFIG_SYS_HYPERVISOR
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extern int hypervisor_init(void);
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#else
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static inline int hypervisor_init(void) { return 0; }
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#endif
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extern int platform_bus_init(void);
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extern int system_bus_init(void);
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extern int cpu_dev_init(void);
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extern int bus_add_device(struct device *dev);
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extern void bus_attach_device(struct device *dev);
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extern void bus_remove_device(struct device *dev);
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extern int bus_add_driver(struct device_driver *drv);
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extern void bus_remove_driver(struct device_driver *drv);
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extern void driver_detach(struct device_driver *drv);
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extern int driver_probe_device(struct device_driver *drv, struct device *dev);
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static inline int driver_match_device(struct device_driver *drv,
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struct device *dev)
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{
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return drv->bus->match ? drv->bus->match(dev, drv) : 1;
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}
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extern void sysdev_shutdown(void);
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extern char *make_class_name(const char *name, struct kobject *kobj);
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extern int devres_release_all(struct device *dev);
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extern struct kset *devices_kset;
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#if defined(CONFIG_MODULES) && defined(CONFIG_SYSFS)
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extern void module_add_driver(struct module *mod, struct device_driver *drv);
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extern void module_remove_driver(struct device_driver *drv);
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#else
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static inline void module_add_driver(struct module *mod,
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struct device_driver *drv) { }
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static inline void module_remove_driver(struct device_driver *drv) { }
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#endif
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