3 files changed, 37 insertions, 6 deletions

diff --git a/include/linux/device/bus.h b/include/linux/device/bus.h
index f5a56efd2bd6..c1b463cd6464 100644
--- a/include/linux/device/bus.h
+++ b/include/linux/device/bus.h
@@ -35,6 +35,8 @@ struct fwnode_handle;
  *		otherwise. It may also return error code if determining that
  *		the driver supports the device is not possible. In case of
  *		-EPROBE_DEFER it will queue the device for deferred probing.
+ *		Note: This callback may be invoked with or without the device
+ *		lock held.
  * @uevent:	Called when a device is added, removed, or a few other things
  *		that generate uevents to add the environment variables.
  * @probe:	Called when a new device or driver add to this bus, and callback
@@ -63,6 +65,9 @@ struct fwnode_handle;
  *			this bus.
  * @pm:		Power management operations of this bus, callback the specific
  *		device driver's pm-ops.
+ * @driver_override:	Set to true if this bus supports the driver_override
+ *			mechanism, which allows userspace to force a specific
+ *			driver to bind to a device via a sysfs attribute.
  * @need_parent_lock:	When probing or removing a device on this bus, the
  *			device core should lock the device's parent.
  *
@@ -104,6 +109,7 @@ struct bus_type {
 
 	const struct dev_pm_ops *pm;
 
+	bool driver_override;
 	bool need_parent_lock;
 };
 
@@ -150,6 +156,9 @@ int bus_for_each_dev(const struct bus_type *bus, struct device *start,
 		     void *data, device_iter_t fn);
 struct device *bus_find_device(const struct bus_type *bus, struct device *start,
 			       const void *data, device_match_t match);
+struct device *bus_find_device_reverse(const struct bus_type *bus,
+				       struct device *start, const void *data,
+				       device_match_t match);
 /**
  * bus_find_device_by_name - device iterator for locating a particular device
  * of a specific name.
@@ -212,9 +221,9 @@ bus_find_next_device(const struct bus_type *bus,struct device *cur)
 	return bus_find_device(bus, cur, NULL, device_match_any);
 }
 
-#ifdef CONFIG_ACPI
 struct acpi_device;
 
+#ifdef CONFIG_ACPI
 /**
  * bus_find_device_by_acpi_dev : device iterator for locating a particular device
  * matching the ACPI COMPANION device.
@@ -228,7 +237,7 @@ bus_find_device_by_acpi_dev(const struct bus_type *bus, const struct acpi_device
 }
 #else
 static inline struct device *
-bus_find_device_by_acpi_dev(const struct bus_type *bus, const void *adev)
+bus_find_device_by_acpi_dev(const struct bus_type *bus, const struct acpi_device *adev)
 {
 	return NULL;
 }
diff --git a/include/linux/device/devres.h b/include/linux/device/devres.h
index 8c5f57e0d613..14ab9159bdda 100644
--- a/include/linux/device/devres.h
+++ b/include/linux/device/devres.h
@@ -9,6 +9,7 @@
 #include <linux/stdarg.h>
 #include <linux/types.h>
 #include <asm/bug.h>
+#include <asm/percpu.h>
 
 struct device;
 struct device_node;
@@ -25,10 +26,6 @@ __devres_alloc_node(dr_release_t release, size_t size, gfp_t gfp, int nid, const
 #define devres_alloc_node(release, size, gfp, nid) \
 	__devres_alloc_node(release, size, gfp, nid, #release)
 
-void devres_for_each_res(struct device *dev, dr_release_t release,
-			 dr_match_t match, void *match_data,
-			 void (*fn)(struct device *, void *, void *),
-			 void *data);
 void devres_free(void *res);
 void devres_add(struct device *dev, void *res);
 void *devres_find(struct device *dev, dr_release_t release, dr_match_t match, void *match_data);
@@ -96,6 +93,22 @@ devm_kvasprintf(struct device *dev, gfp_t gfp, const char *fmt, va_list ap);
 char * __printf(3, 4) __malloc
 devm_kasprintf(struct device *dev, gfp_t gfp, const char *fmt, ...);
 
+/**
+ * devm_alloc_percpu - Resource-managed alloc_percpu
+ * @dev: Device to allocate per-cpu memory for
+ * @type: Type to allocate per-cpu memory for
+ *
+ * Managed alloc_percpu. Per-cpu memory allocated with this function is
+ * automatically freed on driver detach.
+ *
+ * RETURNS:
+ * Pointer to allocated memory on success, NULL on failure.
+ */
+#define devm_alloc_percpu(dev, type)      \
+	((typeof(type) __percpu *)__devm_alloc_percpu((dev), sizeof(type), __alignof__(type)))
+
+void __percpu *__devm_alloc_percpu(struct device *dev, size_t size, size_t align);
+
 unsigned long devm_get_free_pages(struct device *dev, gfp_t gfp_mask, unsigned int order);
 void devm_free_pages(struct device *dev, unsigned long addr);
 
diff --git a/include/linux/device/driver.h b/include/linux/device/driver.h
index cd8e0f0a634b..bbc67ec513ed 100644
--- a/include/linux/device/driver.h
+++ b/include/linux/device/driver.h
@@ -85,6 +85,8 @@ enum probe_type {
  *		uevent.
  * @p:		Driver core's private data, no one other than the driver
  *		core can touch this.
+ * @p_cb:	Callbacks private to the driver core; no one other than the
+ *		driver core is allowed to touch this.
  *
  * The device driver-model tracks all of the drivers known to the system.
  * The main reason for this tracking is to enable the driver core to match
@@ -119,6 +121,13 @@ struct device_driver {
 	void (*coredump) (struct device *dev);
 
 	struct driver_private *p;
+	struct {
+		/*
+		 * Called after remove() and after all devres entries have been
+		 * processed. This is a Rust only callback.
+		 */
+		void (*post_unbind_rust)(struct device *dev);
+	} p_cb;
 };