Merge tag 'driver-core-6.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core

Pull driver core updates from Greg KH:
 "Here is the set of driver core and kernfs changes for 6.2-rc1.

  The "big" change in here is the addition of a new macro,
  container_of_const() that will preserve the "const-ness" of a pointer
  passed into it.

  The "problem" of the current container_of() macro is that if you pass
  in a "const *", out of it can comes a non-const pointer unless you
  specifically ask for it. For many usages, we want to preserve the
  "const" attribute by using the same call. For a specific example, this
  series changes the kobj_to_dev() macro to use it, allowing it to be
  used no matter what the const value is. This prevents every subsystem
  from having to declare 2 different individual macros (i.e.
  kobj_const_to_dev() and kobj_to_dev()) and having the compiler enforce
  the const value at build time, which having 2 macros would not do
  either.

  The driver for all of this have been discussions with the Rust kernel
  developers as to how to properly mark driver core, and kobject,
  objects as being "non-mutable". The changes to the kobject and driver
  core in this pull request are the result of that, as there are lots of
  paths where kobjects and device pointers are not modified at all, so
  marking them as "const" allows the compiler to enforce this.

  So, a nice side affect of the Rust development effort has been already
  to clean up the driver core code to be more obvious about object
  rules.

  All of this has been bike-shedded in quite a lot of detail on lkml
  with different names and implementations resulting in the tiny version
  we have in here, much better than my original proposal. Lots of
  subsystem maintainers have acked the changes as well.

  Other than this change, included in here are smaller stuff like:

   - kernfs fixes and updates to handle lock contention better

   - vmlinux.lds.h fixes and updates

   - sysfs and debugfs documentation updates

   - device property updates

  All of these have been in the linux-next tree for quite a while with
  no problems"

* tag 'driver-core-6.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (58 commits)
  device property: Fix documentation for fwnode_get_next_parent()
  firmware_loader: fix up to_fw_sysfs() to preserve const
  usb.h: take advantage of container_of_const()
  device.h: move kobj_to_dev() to use container_of_const()
  container_of: add container_of_const() that preserves const-ness of the pointer
  driver core: fix up missed drivers/s390/char/hmcdrv_dev.c class.devnode() conversion.
  driver core: fix up missed scsi/cxlflash class.devnode() conversion.
  driver core: fix up some missing class.devnode() conversions.
  driver core: make struct class.devnode() take a const *
  driver core: make struct class.dev_uevent() take a const *
  cacheinfo: Remove of_node_put() for fw_token
  device property: Add a blank line in Kconfig of tests
  device property: Rename goto label to be more precise
  device property: Move PROPERTY_ENTRY_BOOL() a bit down
  device property: Get rid of __PROPERTY_ENTRY_ARRAY_EL*SIZE*()
  kernfs: fix all kernel-doc warnings and multiple typos
  driver core: pass a const * into of_device_uevent()
  kobject: kset_uevent_ops: make name() callback take a const *
  kobject: kset_uevent_ops: make filter() callback take a const *
  kobject: make kobject_namespace take a const *
  ...

8 files changed, 12 insertions, 12 deletions

diff --git a/drivers/usb/class/usblp.c b/drivers/usb/class/usblp.c
index f27b4aecff3d..5a2e43331064 100644
--- a/drivers/usb/class/usblp.c
+++ b/drivers/usb/class/usblp.c
@@ -1090,7 +1090,7 @@ static const struct file_operations usblp_fops = {
 	.llseek =	noop_llseek,
 };
 
-static char *usblp_devnode(struct device *dev, umode_t *mode)
+static char *usblp_devnode(const struct device *dev, umode_t *mode)
 {
 	return kasprintf(GFP_KERNEL, "usb/%s", dev_name(dev));
 }
diff --git a/drivers/usb/core/file.c b/drivers/usb/core/file.c
index 558890ada0e5..da7d88e069e6 100644
--- a/drivers/usb/core/file.c
+++ b/drivers/usb/core/file.c
@@ -62,7 +62,7 @@ static struct usb_class {
 	struct class *class;
 } *usb_class;
 
-static char *usb_devnode(struct device *dev, umode_t *mode)
+static char *usb_devnode(const struct device *dev, umode_t *mode)
 {
 	struct usb_class_driver *drv;
 
diff --git a/drivers/usb/gadget/udc/core.c b/drivers/usb/gadget/udc/core.c
index bf9878e1a72a..23b0629a8774 100644
--- a/drivers/usb/gadget/udc/core.c
+++ b/drivers/usb/gadget/udc/core.c
@@ -1723,9 +1723,9 @@ static const struct attribute_group *usb_udc_attr_groups[] = {
 	NULL,
 };
 
-static int usb_udc_uevent(struct device *dev, struct kobj_uevent_env *env)
+static int usb_udc_uevent(const struct device *dev, struct kobj_uevent_env *env)
 {
-	struct usb_udc		*udc = container_of(dev, struct usb_udc, dev);
+	const struct usb_udc	*udc = container_of(dev, struct usb_udc, dev);
 	int			ret;
 
 	ret = add_uevent_var(env, "USB_UDC_NAME=%s", udc->gadget->name);
diff --git a/drivers/usb/misc/iowarrior.c b/drivers/usb/misc/iowarrior.c
index 988a8c02e7e2..f9427a67789c 100644
--- a/drivers/usb/misc/iowarrior.c
+++ b/drivers/usb/misc/iowarrior.c
@@ -717,7 +717,7 @@ static const struct file_operations iowarrior_fops = {
 	.llseek = noop_llseek,
 };
 
-static char *iowarrior_devnode(struct device *dev, umode_t *mode)
+static char *iowarrior_devnode(const struct device *dev, umode_t *mode)
 {
 	return kasprintf(GFP_KERNEL, "usb/%s", dev_name(dev));
 }
diff --git a/drivers/usb/misc/legousbtower.c b/drivers/usb/misc/legousbtower.c
index 1c9e09138c10..379cf01a6e96 100644
--- a/drivers/usb/misc/legousbtower.c
+++ b/drivers/usb/misc/legousbtower.c
@@ -245,7 +245,7 @@ static const struct file_operations tower_fops = {
 	.llseek =	tower_llseek,
 };
 
-static char *legousbtower_devnode(struct device *dev, umode_t *mode)
+static char *legousbtower_devnode(const struct device *dev, umode_t *mode)
 {
 	return kasprintf(GFP_KERNEL, "usb/%s", dev_name(dev));
 }
diff --git a/drivers/usb/roles/class.c b/drivers/usb/roles/class.c
index 32e6d19f7011..eacb46ec2ab3 100644
--- a/drivers/usb/roles/class.c
+++ b/drivers/usb/roles/class.c
@@ -87,7 +87,7 @@ enum usb_role usb_role_switch_get_role(struct usb_role_switch *sw)
 }
 EXPORT_SYMBOL_GPL(usb_role_switch_get_role);
 
-static void *usb_role_switch_match(struct fwnode_handle *fwnode, const char *id,
+static void *usb_role_switch_match(const struct fwnode_handle *fwnode, const char *id,
 				   void *data)
 {
 	struct device *dev;
diff --git a/drivers/usb/typec/mux.c b/drivers/usb/typec/mux.c
index 941735c73161..c7177ddd4f12 100644
--- a/drivers/usb/typec/mux.c
+++ b/drivers/usb/typec/mux.c
@@ -32,8 +32,8 @@ static int switch_fwnode_match(struct device *dev, const void *fwnode)
 	return device_match_fwnode(dev, fwnode);
 }
 
-static void *typec_switch_match(struct fwnode_handle *fwnode, const char *id,
-				void *data)
+static void *typec_switch_match(const struct fwnode_handle *fwnode,
+				const char *id, void *data)
 {
 	struct device *dev;
 
@@ -262,8 +262,8 @@ static int mux_fwnode_match(struct device *dev, const void *fwnode)
 	return device_match_fwnode(dev, fwnode);
 }
 
-static void *typec_mux_match(struct fwnode_handle *fwnode, const char *id,
-			     void *data)
+static void *typec_mux_match(const struct fwnode_handle *fwnode,
+			     const char *id, void *data)
 {
 	const struct typec_altmode_desc *desc = data;
 	struct device *dev;
diff --git a/drivers/usb/typec/retimer.c b/drivers/usb/typec/retimer.c
index 3a4146ea6e7c..0481e82f6bbc 100644
--- a/drivers/usb/typec/retimer.c
+++ b/drivers/usb/typec/retimer.c
@@ -22,7 +22,7 @@ static int retimer_fwnode_match(struct device *dev, const void *fwnode)
 	return is_typec_retimer(dev) && device_match_fwnode(dev, fwnode);
 }
 
-static void *typec_retimer_match(struct fwnode_handle *fwnode, const char *id, void *data)
+static void *typec_retimer_match(const struct fwnode_handle *fwnode, const char *id, void *data)
 {
 	struct device *dev;