Merge tag 'driver-core-7.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/driver-core/driver-core

Pull driver core updates from Danilo Krummrich:
 "container_of:

   - Apply typeof_member(), remove the local __mptr variable to
     eliminate variable shadowing warnings on nested container_of()
     calls, and remove unnecessary parentheses

  core:

   - Add driver name to probe debug print for initcall_debug

   - Avoid repeatedly printing the same 'Fixed dependency cycle' log

   - Unwind device_add() on attribute creation failure in
     attribute_container_add_class_device()

   - Remove statistics group if encryption group creation fails in
     transport_add_class_device()

  debugfs:

   - Fix lockdown check for mmap_prepare()

   - Warn if file creation failed due to uninitialized debugfs

  device property:

   - Implement fw_devlink support for software nodes by adding
     software_node_add_links(), which creates fwnode links from
     DEV_PROP_REF properties to enable automatic probe ordering. Add
     kunit-managed fwnode helpers and test coverage

   - Fix infinite loop in fwnode_for_each_child_node() when the
     secondary fwnode has more than one child. Add test cases

   - Fix out-of-bounds access in software_node_get_reference_args() when
     called with index -1 (UINT_MAX)

   - Refactor to use RAII approach with __free()

   - Add Bartosz Golaszewski as software node reviewer

  firmware loader:

   - Fix race where a sysfs fallback request can complete before being
     queued as pending, leading to a use-after-free on the next fallback
     request

   - Reject 0-size built-in firmware and fail the build on empty
     firmware files in CONFIG_EXTRA_FIRMWARE

  kobject:

   - Provide __KOBJ_ATTR() and __KOBJ_ATTR_RO/WO() initialization macros
     and allow the constification of kobject attributes, enabling them
     to reside in read-only memory

  platform:

   - Provide platform_device_set_of_node(), platform_device_set_fwnode(),
     and platform_device_set_of_node_from_dev() helpers that encapsulate
     firmware node reference counting for dynamically allocated platform
     devices

     Convert all in-tree users that manually assigned dev.of_node or
     dev.fwnode, fixing a pre-existing refcount bug in powermac. Switch
     to counting references of all firmware node types, not only OF
     nodes

   - Unify the release path for dynamically allocated platform devices
     by removing platform_device_release_full(). Amend the fwnode setter
     API contract to warn if a primary software node is overwritten. Add
     KUnit tests for correct software node removal on device
     unregistration

  Rust:

   - Auxiliary:
       - Add registration_data_with() closure-based API for invariant
         ForLt types

   - Debugfs:
       - Migrate BinaryWriter and BinaryReaderMut trait requirements
         from kernel::transmute traits to zerocopy traits

   - Device:
       - Add BoundInternal device context and InternalBoundContext trait
         for bus abstractions that need internal access to a bound
         device.
       - Make the lifetime on Core and CoreInternal invariant to prevent
         coercion to shorter lifetimes

   - Devres:
       - Fix race between concurrent revokers where the losing revoker
         could return before the winning revoker finished dropping the
         inner data, causing use-after-free.
       - Ensure revocation is complete before the device finishes
         unbinding by making the synchronization bidirectional.
       - Add DevresLt<F: ForLt>, a wrapper around Devres that shortens
         'static back to the caller's borrow scope. Implement ForLt and
         CovariantForLt for Bar, IoMem, and ExclusiveIoMem

   - Driver:
       - Switch from index-based to pointer-based device ID info lookup,
         storing static references in driver_data. Centralize device ID
         handling in device_id.rs, removing the open-coded ACPI/OF
         matching logic and duplicate ID table from driver.rs

   - I/O:
       - Make I/O regions typed (with a dynamically-sized Region type
         for the existing untyped case), create view types representing
         subregions of a mapped I/O region, and add io_project!() for
         safely creating subviews.
       - Split Io into a base trait (IoBase) and an extension trait (Io)
         with a blanket implementation, preventing implementers from
         overriding provided methods that unsafe code relies on.
       - Add a SysMem backend for shared system memory with volatile
         access, and make Coherent implement Io via an I/O view type.
         Add IoSysMap as sum type of Mmio and SysMem. Add copying
         methods (memcpy_{from,to}io()) and read_val()/write_val() for
         typed access.
       - Replace dma_read!()/dma_write!() with io_read!()/io_write!()
         for primitives and copying methods for aggregates; drop the old
         macros. Convert nova-core to use I/O projection.
       - Fix internal shortcut rule dispatch in the register!() macro,
         remove unused rule arguments, and use path fragments for alias
         destinations

   - IRQ:
       - Make irq::Registration compatible with lifetime-bound drivers
         by removing the 'static bound on Handler/ThreadedHandler and
         replacing Devres<RegistrationInner> with direct
         request_irq()/free_irq() calls. Handlers can now directly own
         lifetime-bound device resources

   - PCI:
       - Convert IrqVectorRegistration to a lifetime-annotated owning
         type, giving drivers explicit control over the allocation
         lifetime. IrqVector embeds a resolved IrqRequest, making the
         conversion infallible. Remove the redundant
         request_irq()/request_threaded_irq() wrappers from pci::Device.
       - Add pci_irq_type() C helper and expose it via irq_type() on
         IrqVectorRegistration and IrqVector, returning PCI_IRQ_MSIX,
         PCI_IRQ_MSI, or PCI_IRQ_INTX.
       - Mark pci::Device refcount methods inline

   - Serdev:
       - Add Rust abstractions for the serial device bus, including
         serdev::Driver trait, serdev::Device wrapping struct
         serdev_device, and serdev::Adapter implementing
         RegistrationOps. Includes a sample driver. Markus Probst takes
         over as serdev maintainer for both C and Rust code

   - Misc:
       - Split ForLt into a base trait (providing the Of<'a> GAT) and an
         unsafe CovariantForLt subtrait guaranteeing covariance,
         enabling invariant types (e.g. those containing Mutex<&'bound T>)
         to participate in the ForLt abstraction.
       - Fix Coherent read past EOF returning -ERANGE instead of zero.
       - Fix firmware example UB by avoiding null-pointer ARef

  misc:
   - Avoid iattr allocation in kernfs listxattr by using
     kernfs_iattrs_noalloc().
   - Unregister SoC bus on early device registration failure.
   - Remove unused DMA_FENCE_TRACE Kconfig symbol.
   - Fix /sys/module path in comment.
   - Refactor ISA bus init to remove nested blocks.
   - Remove redundant nodemask clears in numa_init().
   - Add kernel-doc for fwnode_operations and sys_soc.h, mark
     internal property data as private for kernel-doc, and add
     property.h/fwnode.h to driver-api infrastructure docs.
   - Add MAINTAINERS entry for sys_soc.h"

* tag 'driver-core-7.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/driver-core/driver-core: (129 commits)
  rust: pci: expose the allocated interrupt type
  PCI: Add pci_irq_type() to query the allocated interrupt type
  rust: pci: remove request_irq() and request_threaded_irq() from Device
  rust: pci: resolve IRQ in index() and embed IrqRequest in IrqVector
  rust: pci: convert IrqVectorRegistration to a lifetime-managed owning type
  kernfs: avoid iattr allocation in listxattr
  rust: serdev: use ThisModule::as_ptr() instead of field access
  ACPI/IORT: use platform_device_set_fwnode()
  ACPI/APMT: use platform_device_set_fwnode()
  firmware_loader: do not queue completed sysfs fallback requests
  rust: pci: Mark Device refcount methods inline
  rust: irq: make Registration compatible with lifetime-bound drivers
  rust: net/phy: remove expansion from doc
  rust: dma: return zero for Coherent reads past EOF
  rust: io: register: use path fragment for alias destination
  rust: io: register: remove unused rule arguments
  rust: io: register: dispatch shortcut rules internally
  MAINTAINERS: add sys_soc.h to DRIVER CORE
  rust: debugfs: remove unsafe blocks from traits impl for Vec
  rust: debugfs: migrate debugfs traits requirements to zerocopy
  ...

7 files changed, 125 insertions, 8 deletions

diff --git a/include/linux/container_of.h b/include/linux/container_of.h
index 1f6ebf27d962..28db38e9ee3e 100644
--- a/include/linux/container_of.h
+++ b/include/linux/container_of.h
@@ -17,11 +17,10 @@
  * Do not use container_of() in new code.
  */
 #define container_of(ptr, type, member) ({				\
-	void *__mptr = (void *)(ptr);					\
-	static_assert(__same_type(*(ptr), ((type *)0)->member) ||	\
+	static_assert(__same_type(*(ptr), typeof_member(type, member)) || \
 		      __same_type(*(ptr), void),			\
 		      "pointer type mismatch in container_of()");	\
-	((type *)(__mptr - offsetof(type, member))); })
+	(type *)((void *)(ptr) - offsetof(type, member)); })
 
 /**
  * container_of_const - cast a member of a structure out to the containing
diff --git a/include/linux/fwnode.h b/include/linux/fwnode.h
index 4e86e6990d28..a9dcaf7e7076 100644
--- a/include/linux/fwnode.h
+++ b/include/linux/fwnode.h
@@ -117,6 +117,8 @@ struct fwnode_reference_args {
  * @put: Put a reference to an fwnode.
  * @device_is_available: Return true if the device is available.
  * @device_get_match_data: Return the device driver match data.
+ * @device_dma_supported: Return true if DMA is supported.
+ * @device_get_dma_attr: Return the device DMA attribute.
  * @property_present: Return true if a property is present.
  * @property_read_bool: Return a boolean property value.
  * @property_read_int_array: Read an array of integer properties. Return zero on
@@ -134,6 +136,8 @@ struct fwnode_reference_args {
  *			       endpoint node.
  * @graph_get_port_parent: Return the parent node of a port node.
  * @graph_parse_endpoint: Parse endpoint for port and endpoint id.
+ * @iomap: Map the I/O memory of a given index for a fwnode.
+ * @irq_get: Get the IRQ of a given index for a fwnode.
  * @add_links:	Create fwnode links to all the suppliers of the fwnode. Return
  *		zero on success, a negative error code otherwise.
  */
diff --git a/include/linux/kobject.h b/include/linux/kobject.h
index bcb5d4e32001..55e37a5d405e 100644
--- a/include/linux/kobject.h
+++ b/include/linux/kobject.h
@@ -138,12 +138,79 @@ struct kset_uevent_ops {
 
 struct kobj_attribute {
 	struct attribute attr;
-	ssize_t (*show)(struct kobject *kobj, struct kobj_attribute *attr,
-			char *buf);
-	ssize_t (*store)(struct kobject *kobj, struct kobj_attribute *attr,
-			 const char *buf, size_t count);
+	__SYSFS_FUNCTION_ALTERNATIVE(
+		ssize_t (*show)(struct kobject *kobj, struct kobj_attribute *attr, char *buf);
+		ssize_t (*show_const)(struct kobject *kobj, const struct kobj_attribute *attr,
+				      char *buf);
+	);
+	__SYSFS_FUNCTION_ALTERNATIVE(
+		ssize_t (*store)(struct kobject *kobj, struct kobj_attribute *attr,
+				 const char *buf, size_t count);
+		ssize_t (*store_const)(struct kobject *kobj, const struct kobj_attribute *attr,
+				       const char *buf, size_t count);
+	);
 };
 
+typedef ssize_t __kobj_show_handler_const(struct kobject *kobj, const struct kobj_attribute *attr,
+					  char *buf);
+typedef ssize_t __kobj_store_handler_const(struct kobject *kobj, const struct kobj_attribute *attr,
+					   const char *buf, size_t count);
+
+#ifdef CONFIG_CFI
+
+#define __KOBJ_ATTR_SHOW_STORE(_show, _store)						\
+	.show		= _Generic(_show,						\
+			  __kobj_show_handler_const * : NULL,				\
+			  default : _show						\
+	),										\
+	.show_const	= _Generic(_show,						\
+			  __kobj_show_handler_const * : _show,				\
+			  default : NULL						\
+	),										\
+	.store		= _Generic(_store,						\
+			  __kobj_store_handler_const * : NULL,				\
+			  default : _store						\
+	),										\
+	.store_const	= _Generic(_store,						\
+			  __kobj_store_handler_const * : _store,			\
+			  default : NULL \
+	),
+
+#else
+
+#define __KOBJ_ATTR_SHOW_STORE(_show, _store)						\
+	.show		= _Generic(_show,						\
+			  __kobj_show_handler_const * : (void *)_show,			\
+			  default : _show						\
+	),										\
+	.store		= _Generic(_store,						\
+			  __kobj_store_handler_const * : (void *)_store,		\
+			  default : _store						\
+	),										\
+
+#endif
+
+#define __KOBJ_ATTR(_name, _mode, _show, _store) {			\
+	.attr	= { .name = __stringify(_name),				\
+		    .mode = VERIFY_OCTAL_PERMISSIONS(_mode) },		\
+	__KOBJ_ATTR_SHOW_STORE(_show, _store)				\
+}
+
+#define __KOBJ_ATTR_RO_MODE(_name, _mode)				\
+	__KOBJ_ATTR(_name, _mode, _name##_show, NULL)
+
+#define __KOBJ_ATTR_RO(_name)						\
+	__KOBJ_ATTR_RO_MODE(_name, 0444)
+
+#define __KOBJ_ATTR_RW_MODE(_name, _mode)				\
+	__KOBJ_ATTR(_name, _mode, _name##_show, _name##_store)
+
+#define __KOBJ_ATTR_WO(_name)						\
+	__KOBJ_ATTR(_name, 0200, NULL, _name##_store)
+
+#define __KOBJ_ATTR_RW(_name)						\
+	__KOBJ_ATTR(_name, 0644, _name##_show, _name##_store)
+
 extern const struct sysfs_ops kobj_sysfs_ops;
 
 struct sock;
diff --git a/include/linux/pci.h b/include/linux/pci.h
index 64b308b6e61c..3d2c1ac645ff 100644
--- a/include/linux/pci.h
+++ b/include/linux/pci.h
@@ -1783,6 +1783,26 @@ void pci_free_irq_vectors(struct pci_dev *dev);
 int pci_irq_vector(struct pci_dev *dev, unsigned int nr);
 const struct cpumask *pci_irq_get_affinity(struct pci_dev *pdev, int vec);
 
+/**
+ * pci_irq_type - Get the interrupt type of a PCI device
+ * @pdev: the PCI device to operate on
+ *
+ * Discriminate the interrupt type the PCI core selected for this device
+ * after a successful pci_alloc_irq_vectors() call.
+ *
+ * Return: %PCI_IRQ_MSIX, %PCI_IRQ_MSI, or %PCI_IRQ_INTX.
+ */
+static inline unsigned int pci_irq_type(struct pci_dev *pdev)
+{
+	if (pdev->msix_enabled)
+		return PCI_IRQ_MSIX;
+
+	if (pdev->msi_enabled)
+		return PCI_IRQ_MSI;
+
+	return PCI_IRQ_INTX;
+}
+
 #else
 static inline int pci_msi_vec_count(struct pci_dev *dev) { return -ENOSYS; }
 static inline void pci_disable_msi(struct pci_dev *dev) { }
@@ -1845,6 +1865,11 @@ static inline const struct cpumask *pci_irq_get_affinity(struct pci_dev *pdev,
 {
 	return cpu_possible_mask;
 }
+
+static inline unsigned int pci_irq_type(struct pci_dev *pdev)
+{
+	return PCI_IRQ_INTX;
+}
 #endif
 
 /**
@@ -2255,6 +2280,11 @@ static inline bool pci_suspend_retains_context(struct pci_dev *pdev)
 {
 	return true;
 }
+
+static inline unsigned int pci_irq_type(struct pci_dev *pdev)
+{
+	return 0;
+}
 #endif /* CONFIG_PCI */
 
 /* Include architecture-dependent settings and functions */
diff --git a/include/linux/platform_device.h b/include/linux/platform_device.h
index 8c566f09d04e..3d5bbcbae730 100644
--- a/include/linux/platform_device.h
+++ b/include/linux/platform_device.h
@@ -19,6 +19,8 @@
 struct irq_affinity;
 struct mfd_cell;
 struct property_entry;
+struct device_node;
+struct fwnode_handle;
 
 struct platform_device {
 	const char	*name;
@@ -262,6 +264,12 @@ extern int platform_device_add_resources(struct platform_device *pdev,
 					 unsigned int num);
 extern int platform_device_add_data(struct platform_device *pdev,
 				    const void *data, size_t size);
+void platform_device_set_of_node(struct platform_device *pdev,
+				 struct device_node *np);
+void platform_device_set_fwnode(struct platform_device *pdev,
+				struct fwnode_handle *fwnode);
+void platform_device_set_of_node_from_dev(struct platform_device *pdev,
+					  const struct device *dev2);
 extern int platform_device_add(struct platform_device *pdev);
 extern void platform_device_del(struct platform_device *pdev);
 extern void platform_device_put(struct platform_device *pdev);
diff --git a/include/linux/property.h b/include/linux/property.h
index 14c304db4664..907c790a3f01 100644
--- a/include/linux/property.h
+++ b/include/linux/property.h
@@ -397,11 +397,13 @@ struct property_entry {
 	union {
 		const void *pointer;
 		union {
+			/* private: internal representation of @value */
 			u8 u8_data[sizeof(u64) / sizeof(u8)];
 			u16 u16_data[sizeof(u64) / sizeof(u16)];
 			u32 u32_data[sizeof(u64) / sizeof(u32)];
 			u64 u64_data[sizeof(u64) / sizeof(u64)];
 			const char *str[sizeof(u64) / sizeof(char *)];
+			/* public: */
 		} value;
 	};
 };
diff --git a/include/linux/sys_soc.h b/include/linux/sys_soc.h
index f19f5cec18e2..cedabf177f47 100644
--- a/include/linux/sys_soc.h
+++ b/include/linux/sys_soc.h
@@ -21,19 +21,26 @@ struct soc_device_attribute {
 /**
  * soc_device_register - register SoC as a device
  * @soc_plat_dev_attr: Attributes passed from platform to be attributed to a SoC
+ *
+ * Returns:
+ * - %NULL if the SoC bus is not yet registered;
+ * - on success, the newly allocated &struct soc_device pointer;
+ * - on failure, a negative error code as an ERR_PTR().
  */
 struct soc_device *soc_device_register(
 	struct soc_device_attribute *soc_plat_dev_attr);
 
 /**
  * soc_device_unregister - unregister SoC device
- * @dev: SoC device to be unregistered
+ * @soc_dev: SoC device to be unregistered
  */
 void soc_device_unregister(struct soc_device *soc_dev);
 
 /**
  * soc_device_to_device - helper function to fetch struct device
  * @soc: Previously registered SoC device container
+ *
+ * Returns: &struct device pointer for this @soc
  */
 struct device *soc_device_to_device(struct soc_device *soc);