Merge tag 'driver-core-5.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core

Pull driver core updates from Greg KH:
 "Here is the big driver core patchset for 5.1-rc1

  More patches than "normal" here this merge window, due to some work in
  the driver core by Alexander Duyck to rework the async probe
  functionality to work better for a number of devices, and independant
  work from Rafael for the device link functionality to make it work
  "correctly".

  Also in here is:

   - lots of BUS_ATTR() removals, the macro is about to go away

   - firmware test fixups

   - ihex fixups and simplification

   - component additions (also includes i915 patches)

   - lots of minor coding style fixups and cleanups.

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

* tag 'driver-core-5.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (65 commits)
  driver core: platform: remove misleading err_alloc label
  platform: set of_node in platform_device_register_full()
  firmware: hardcode the debug message for -ENOENT
  driver core: Add missing description of new struct device_link field
  driver core: Fix PM-runtime for links added during consumer probe
  drivers/component: kerneldoc polish
  async: Add cmdline option to specify drivers to be async probed
  driver core: Fix possible supplier PM-usage counter imbalance
  PM-runtime: Fix __pm_runtime_set_status() race with runtime resume
  driver: platform: Support parsing GpioInt 0 in platform_get_irq()
  selftests: firmware: fix verify_reqs() return value
  Revert "selftests: firmware: remove use of non-standard diff -Z option"
  Revert "selftests: firmware: add CONFIG_FW_LOADER_USER_HELPER_FALLBACK to config"
  device: Fix comment for driver_data in struct device
  kernfs: Allocating memory for kernfs_iattrs with kmem_cache.
  sysfs: remove unused include of kernfs-internal.h
  driver core: Postpone DMA tear-down until after devres release
  driver core: Document limitation related to DL_FLAG_RPM_ACTIVE
  PM-runtime: Take suppliers into account in __pm_runtime_set_status()
  device.h: Add __cold to dev_<level> logging functions
  ...

1 files changed, 17 insertions, 13 deletions

diff --git a/include/linux/device.h b/include/linux/device.h
index d88d2362e8c3..928e899ccbfb 100644
--- a/include/linux/device.h
+++ b/include/linux/device.h
@@ -341,6 +341,7 @@ struct device *driver_find_device(struct device_driver *drv,
 				  struct device *start, void *data,
 				  int (*match)(struct device *dev, void *data));
 
+void driver_deferred_probe_add(struct device *dev);
 int driver_deferred_probe_check_state(struct device *dev);
 
 /**
@@ -827,12 +828,14 @@ enum device_link_state {
  * 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.
  * AUTOREMOVE_SUPPLIER: Remove the link automatically on supplier driver unbind.
+ * AUTOPROBE_CONSUMER: Probe consumer driver automatically after supplier binds.
  */
 #define DL_FLAG_STATELESS		BIT(0)
 #define DL_FLAG_AUTOREMOVE_CONSUMER	BIT(1)
 #define DL_FLAG_PM_RUNTIME		BIT(2)
 #define DL_FLAG_RPM_ACTIVE		BIT(3)
 #define DL_FLAG_AUTOREMOVE_SUPPLIER	BIT(4)
+#define DL_FLAG_AUTOPROBE_CONSUMER	BIT(5)
 
 /**
  * struct device_link - Device link representation.
@@ -845,6 +848,7 @@ enum device_link_state {
  * @rpm_active: Whether or not the consumer device is runtime-PM-active.
  * @kref: Count repeated addition of the same link.
  * @rcu_head: An RCU head to use for deferred execution of SRCU callbacks.
+ * @supplier_preactivated: Supplier has been made active before consumer probe.
  */
 struct device_link {
 	struct device *supplier;
@@ -853,11 +857,12 @@ struct device_link {
 	struct list_head c_node;
 	enum device_link_state status;
 	u32 flags;
-	bool rpm_active;
+	refcount_t rpm_active;
 	struct kref kref;
 #ifdef CONFIG_SRCU
 	struct rcu_head rcu_head;
 #endif
+	bool supplier_preactivated; /* Owned by consumer probe. */
 };
 
 /**
@@ -985,7 +990,7 @@ struct device {
 	void		*platform_data;	/* Platform specific data, device
 					   core doesn't touch it */
 	void		*driver_data;	/* Driver data, set and get with
-					   dev_set/get_drvdata */
+					   dev_set_drvdata/dev_get_drvdata */
 	struct dev_links_info	links;
 	struct dev_pm_info	power;
 	struct dev_pm_domain	*pm_domain;
@@ -1035,7 +1040,6 @@ struct device {
 	spinlock_t		devres_lock;
 	struct list_head	devres_head;
 
-	struct klist_node	knode_class;
 	struct class		*class;
 	const struct attribute_group **groups;	/* optional groups */
 
@@ -1392,28 +1396,28 @@ void device_link_remove(void *consumer, struct device *supplier);
 
 #ifdef CONFIG_PRINTK
 
-__printf(3, 0)
+__printf(3, 0) __cold
 int dev_vprintk_emit(int level, const struct device *dev,
 		     const char *fmt, va_list args);
-__printf(3, 4)
+__printf(3, 4) __cold
 int dev_printk_emit(int level, const struct device *dev, const char *fmt, ...);
 
-__printf(3, 4)
+__printf(3, 4) __cold
 void dev_printk(const char *level, const struct device *dev,
 		const char *fmt, ...);
-__printf(2, 3)
+__printf(2, 3) __cold
 void _dev_emerg(const struct device *dev, const char *fmt, ...);
-__printf(2, 3)
+__printf(2, 3) __cold
 void _dev_alert(const struct device *dev, const char *fmt, ...);
-__printf(2, 3)
+__printf(2, 3) __cold
 void _dev_crit(const struct device *dev, const char *fmt, ...);
-__printf(2, 3)
+__printf(2, 3) __cold
 void _dev_err(const struct device *dev, const char *fmt, ...);
-__printf(2, 3)
+__printf(2, 3) __cold
 void _dev_warn(const struct device *dev, const char *fmt, ...);
-__printf(2, 3)
+__printf(2, 3) __cold
 void _dev_notice(const struct device *dev, const char *fmt, ...);
-__printf(2, 3)
+__printf(2, 3) __cold
 void _dev_info(const struct device *dev, const char *fmt, ...);
 
 #else