Merge tag 'driver-core-6.11-rc3' of...

Merge tag 'driver-core-6.11-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core

Pull driver core / documentation fixes from Greg KH:
 "Here are some small fixes, and some documentation updates for
  6.11-rc3. Included in here are:

   - embargoed hardware documenation updates based on a lot of review by
     legal-types in lots of companies to try to make the process a _bit_
     easier for us to manage over time.

   - rust firmware documentation fix

   - driver detach race fix for the fix that went into 6.11-rc1

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

* tag 'driver-core-6.11-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core:
  driver core: Fix uevent_show() vs driver detach race
  Documentation: embargoed-hardware-issues.rst: add a section documenting the "early access" process
  Documentation: embargoed-hardware-issues.rst: minor cleanups and fixes
  rust: firmware: fix invalid rustdoc link

drivers/base/core.c

@@ -25,6 +25,7 @@
 #include <linux/mutex.h>
 #include <linux/pm_runtime.h>
 #include <linux/netdevice.h>
+#include <linux/rcupdate.h>
 #include <linux/sched/signal.h>
 #include <linux/sched/mm.h>
 #include <linux/string_helpers.h>
@@ -2640,6 +2641,7 @@ static const char *dev_uevent_name(const struct kobject *kobj)
 static int dev_uevent(const struct kobject *kobj, struct kobj_uevent_env *env)
 {
 	const struct device *dev = kobj_to_dev(kobj);
+	struct device_driver *driver;
 	int retval = 0;
 
 	/* add device node properties if present */
@@ -2668,8 +2670,12 @@ static int dev_uevent(const struct kobject *kobj, struct kobj_uevent_env *env)
 	if (dev->type && dev->type->name)
 		add_uevent_var(env, "DEVTYPE=%s", dev->type->name);
 
-	if (dev->driver)
-		add_uevent_var(env, "DRIVER=%s", dev->driver->name);
+	/* Synchronize with module_remove_driver() */
+	rcu_read_lock();
+	driver = READ_ONCE(dev->driver);
+	if (driver)
+		add_uevent_var(env, "DRIVER=%s", driver->name);
+	rcu_read_unlock();
 
 	/* Add common DT information about the device */
 	of_device_uevent(dev, env);
@@ -2739,11 +2745,8 @@ static ssize_t uevent_show(struct device *dev, struct device_attribute *attr,
 	if (!env)
 		return -ENOMEM;
 
-	/* Synchronize with really_probe() */
-	device_lock(dev);
 	/* let the kset specific function add its keys */
 	retval = kset->uevent_ops->uevent(&dev->kobj, env);
-	device_unlock(dev);
 	if (retval)
 		goto out;
 

drivers/base/module.c

@@ -7,6 +7,7 @@
 #include <linux/errno.h>
 #include <linux/slab.h>
 #include <linux/string.h>
+#include <linux/rcupdate.h>
 #include "base.h"
 
 static char *make_driver_name(const struct device_driver *drv)
@@ -97,6 +98,9 @@ void module_remove_driver(const struct device_driver *drv)
 	if (!drv)
 		return;
 
+	/* Synchronize with dev_uevent() */
+	synchronize_rcu();
+
 	sysfs_remove_link(&drv->p->kobj, "module");
 
 	if (drv->owner)

rust/kernel/firmware.rs

@@ -2,7 +2,7 @@
 
 //! Firmware abstraction
 //!
-//! C header: [`include/linux/firmware.h`](srctree/include/linux/firmware.h")
+//! C header: [`include/linux/firmware.h`](srctree/include/linux/firmware.h)
 
 use crate::{bindings, device::Device, error::Error, error::Result, str::CStr};
 use core::ptr::NonNull;