GitHub-Mirror/Star64_linux
2
0
Fork 0
mirror of https://github.com/Fishwaldo/Star64_linux.git synced 2025-06-22 22:51:37 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions

Driver core patches for 4.10-rc1

Browse source 
Here's the new driver core patches for 4.10-rc1.
 
 Big thing here is the nice addition of "functional dependencies" to the
 driver core.  The idea has been talked about for a very long time, great
 job to Rafael for stepping up and implementing it. It's been tested for
 longer than the 4.9-rc1 date, we held off on merging it earlier in order
 to feel more comfortable about it.
 
 Other than that, it's just a handful of small other patches, some good
 cleanups to the mess that is the firmware class code, and we have a test
 driver for the deferred probe logic.
 
 All of these have been in linux-next for a while with no reported
 issues.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 -----BEGIN PGP SIGNATURE-----
 
 iG0EABECAC0WIQT0tgzFv3jCIUoxPcsxR9QN2y37KQUCWFAvPQ8cZ3JlZ0Brcm9h
 aC5jb20ACgkQMUfUDdst+ym3NgCgmhFeWEkp9SDt17YGGavmnzQUlBQAoJlUipJp
 PHeQkq15ZWw3wWC9FEvM
 =91M1
 -----END PGP SIGNATURE-----

Merge tag 'driver-core-4.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core

Pull driver core updates from Greg KH:
 "Here's the new driver core patches for 4.10-rc1.

  Big thing here is the nice addition of "functional dependencies" to
  the driver core. The idea has been talked about for a very long time,
  great job to Rafael for stepping up and implementing it. It's been
  tested for longer than the 4.9-rc1 date, we held off on merging it
  earlier in order to feel more comfortable about it.

  Other than that, it's just a handful of small other patches, some good
  cleanups to the mess that is the firmware class code, and we have a
  test driver for the deferred probe logic.

  All of these have been in linux-next for a while with no reported
  issues"

* tag 'driver-core-4.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (30 commits)
  firmware: Correct handling of fw_state_wait() return value
  driver core: Silence device links sphinx warning
  firmware: remove warning at documentation generation time
  drivers: base: dma-mapping: Fix typo in dmam_alloc_non_coherent comments
  driver core: test_async: fix up typo found by 0-day
  firmware: move fw_state_is_done() into UHM section
  firmware: do not use fw_lock for fw_state protection
  firmware: drop bit ops in favor of simple state machine
  firmware: refactor loading status
  firmware: fix usermode helper fallback loading
  driver core: firmware_class: convert to use class_groups
  driver core: devcoredump: convert to use class_groups
  driver core: class: add class_groups support
  kernfs: Declare two local data structures static
  driver-core: fix platform_no_drv_owner.cocci warnings
  drivers/base/memory.c: Remove unused 'first_page' variable
  driver core: add CLASS_ATTR_WO()
  drivers: base: cacheinfo: support DT overrides for cache properties
  drivers: base: cacheinfo: add pr_fmt logging
  drivers: base: cacheinfo: fix boot error message when acpi is enabled
  ...
This commit is contained in:
Linus Torvalds 2016-12-13 11:42:18 -08:00
commit 098c30557a
26 changed files with 1517 additions and 128 deletions
Download patch file Download diff file Expand all files Collapse all files

91
include/linux/device.h
View file

@ -362,6 +362,7 @@ int subsys_virtual_register(struct bus_type *subsys,
* @name: Name of the class.
* @owner: The module owner.
* @class_attrs: Default attributes of this class.
* @class_groups: Default attributes of this class.
* @dev_groups: Default attributes of the devices that belong to the class.
* @dev_kobj: The kobject that represents this class and links it into the hierarchy.
* @dev_uevent: Called when a device is added, removed from this class, or a
@ -390,6 +391,7 @@ struct class {
struct module *owner;
struct class_attribute *class_attrs;
const struct attribute_group **class_groups;
const struct attribute_group **dev_groups;
struct kobject *dev_kobj;
@ -465,6 +467,8 @@ struct class_attribute {
struct class_attribute class_attr_##_name = __ATTR_RW(_name)
#define CLASS_ATTR_RO(_name) \
struct class_attribute class_attr_##_name = __ATTR_RO(_name)
#define CLASS_ATTR_WO(_name) \
struct class_attribute class_attr_##_name = __ATTR_WO(_name)
extern int __must_check class_create_file_ns(struct class *class,
const struct class_attribute *attr,
@ -726,6 +730,87 @@ struct device_dma_parameters {
unsigned long segment_boundary_mask;
};
/**
* enum device_link_state - Device link states.
* @DL_STATE_NONE: The presence of the drivers is not being tracked.
* @DL_STATE_DORMANT: None of the supplier/consumer drivers is present.
* @DL_STATE_AVAILABLE: The supplier driver is present, but the consumer is not.
* @DL_STATE_CONSUMER_PROBE: The consumer is probing (supplier driver present).
* @DL_STATE_ACTIVE: Both the supplier and consumer drivers are present.
* @DL_STATE_SUPPLIER_UNBIND: The supplier driver is unbinding.
*/
enum device_link_state {
DL_STATE_NONE = -1,
DL_STATE_DORMANT = 0,
DL_STATE_AVAILABLE,
DL_STATE_CONSUMER_PROBE,
DL_STATE_ACTIVE,
DL_STATE_SUPPLIER_UNBIND,
};
/*
* Device link flags.
*
* STATELESS: The core won't track the presence of supplier/consumer drivers.
* AUTOREMOVE: Remove this link automatically on consumer driver unbind.
* PM_RUNTIME: If set, the runtime PM framework will use this link.
* RPM_ACTIVE: Run pm_runtime_get_sync() on the supplier during link creation.
*/
#define DL_FLAG_STATELESS BIT(0)
#define DL_FLAG_AUTOREMOVE BIT(1)
#define DL_FLAG_PM_RUNTIME BIT(2)
#define DL_FLAG_RPM_ACTIVE BIT(3)
/**
* struct device_link - Device link representation.
* @supplier: The device on the supplier end of the link.
* @s_node: Hook to the supplier device's list of links to consumers.
* @consumer: The device on the consumer end of the link.
* @c_node: Hook to the consumer device's list of links to suppliers.
* @status: The state of the link (with respect to the presence of drivers).
* @flags: Link flags.
* @rpm_active: Whether or not the consumer device is runtime-PM-active.
* @rcu_head: An RCU head to use for deferred execution of SRCU callbacks.
*/
struct device_link {
struct device *supplier;
struct list_head s_node;
struct device *consumer;
struct list_head c_node;
enum device_link_state status;
u32 flags;
bool rpm_active;
#ifdef CONFIG_SRCU
struct rcu_head rcu_head;
#endif
};
/**
* enum dl_dev_state - Device driver presence tracking information.
* @DL_DEV_NO_DRIVER: There is no driver attached to the device.
* @DL_DEV_PROBING: A driver is probing.
* @DL_DEV_DRIVER_BOUND: The driver has been bound to the device.
* @DL_DEV_UNBINDING: The driver is unbinding from the device.
*/
enum dl_dev_state {
DL_DEV_NO_DRIVER = 0,
DL_DEV_PROBING,
DL_DEV_DRIVER_BOUND,
DL_DEV_UNBINDING,
};
/**
* struct dev_links_info - Device data related to device links.
* @suppliers: List of links to supplier devices.
* @consumers: List of links to consumer devices.
* @status: Driver status information.
*/
struct dev_links_info {
struct list_head suppliers;
struct list_head consumers;
enum dl_dev_state status;
};
/**
* struct device - The basic device structure
* @parent: The device's "parent" device, the device to which it is attached.
@ -751,6 +836,7 @@ struct device_dma_parameters {
* on. This shrinks the "Board Support Packages" (BSPs) and
* minimizes board-specific #ifdefs in drivers.
* @driver_data: Private pointer for driver specific info.
* @links: Links to suppliers and consumers of this device.
* @power: For device power management.
* See Documentation/power/admin-guide/devices.rst for details.
* @pm_domain: Provide callbacks that are executed during system suspend,
@ -818,6 +904,7 @@ struct device {
core doesn't touch it */
void *driver_data; /* Driver data, set and get with
dev_set/get_drvdata */
struct dev_links_info links;
struct dev_pm_info power;
struct dev_pm_domain *pm_domain;
@ -1135,6 +1222,10 @@ extern void device_shutdown(void);
/* debugging and troubleshooting/diagnostic helpers. */
extern const char *dev_driver_string(const struct device *dev);
/* Device links interface. */
struct device_link *device_link_add(struct device *consumer,
struct device *supplier, u32 flags);
void device_link_del(struct device_link *link);
#ifdef CONFIG_PRINTK