Merge tag 'driver-core-6.11-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 set of driver core changes for 6.11-rc1.

  Lots of stuff in here, with not a huge diffstat, but apis are evolving
  which required lots of files to be touched. Highlights of the changes
  in here are:

   - platform remove callback api final fixups (Uwe took many releases
     to get here, finally!)

   - Rust bindings for basic firmware apis and initial driver-core
     interactions.

     It's not all that useful for a "write a whole driver in rust" type
     of thing, but the firmware bindings do help out the phy rust
     drivers, and the driver core bindings give a solid base on which
     others can start their work.

     There is still a long way to go here before we have a multitude of
     rust drivers being added, but it's a great first step.

   - driver core const api changes.

     This reached across all bus types, and there are some fix-ups for
     some not-common bus types that linux-next and 0-day testing shook
     out.

     This work is being done to help make the rust bindings more safe,
     as well as the C code, moving toward the end-goal of allowing us to
     put driver structures into read-only memory. We aren't there yet,
     but are getting closer.

   - minor devres cleanups and fixes found by code inspection

   - arch_topology minor changes

   - other minor driver core cleanups

  All of these have been in linux-next for a very long time with no
  reported problems"

* tag 'driver-core-6.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (55 commits)
  ARM: sa1100: make match function take a const pointer
  sysfs/cpu: Make crash_hotplug attribute world-readable
  dio: Have dio_bus_match() callback take a const *
  zorro: make match function take a const pointer
  driver core: module: make module_[add|remove]_driver take a const *
  driver core: make driver_find_device() take a const *
  driver core: make driver_[create|remove]_file take a const *
  firmware_loader: fix soundness issue in `request_internal`
  firmware_loader: annotate doctests as `no_run`
  devres: Correct code style for functions that return a pointer type
  devres: Initialize an uninitialized struct member
  devres: Fix memory leakage caused by driver API devm_free_percpu()
  devres: Fix devm_krealloc() wasting memory
  driver core: platform: Switch to use kmemdup_array()
  driver core: have match() callback in struct bus_type take a const *
  MAINTAINERS: add Rust device abstractions to DRIVER CORE
  device: rust: improve safety comments
  MAINTAINERS: add Danilo as FIRMWARE LOADER maintainer
  MAINTAINERS: add Rust FW abstractions to FIRMWARE LOADER
  firmware: rust: improve safety comments
  ...

1 files changed, 10 insertions, 16 deletions

diff --git a/drivers/base/platform.c b/drivers/base/platform.c
index 10c577963418..4c3ee6521ba5 100644
--- a/drivers/base/platform.c
+++ b/drivers/base/platform.c
@@ -608,7 +608,7 @@ int platform_device_add_resources(struct platform_device *pdev,
 	struct resource *r = NULL;
 
 	if (res) {
-		r = kmemdup(res, sizeof(struct resource) * num, GFP_KERNEL);
+		r = kmemdup_array(res, num, sizeof(*r), GFP_KERNEL);
 		if (!r)
 			return -ENOMEM;
 	}
@@ -1122,7 +1122,7 @@ static int platform_legacy_resume(struct device *dev)
 
 int platform_pm_suspend(struct device *dev)
 {
-	struct device_driver *drv = dev->driver;
+	const struct device_driver *drv = dev->driver;
 	int ret = 0;
 
 	if (!drv)
@@ -1140,7 +1140,7 @@ int platform_pm_suspend(struct device *dev)
 
 int platform_pm_resume(struct device *dev)
 {
-	struct device_driver *drv = dev->driver;
+	const struct device_driver *drv = dev->driver;
 	int ret = 0;
 
 	if (!drv)
@@ -1162,7 +1162,7 @@ int platform_pm_resume(struct device *dev)
 
 int platform_pm_freeze(struct device *dev)
 {
-	struct device_driver *drv = dev->driver;
+	const struct device_driver *drv = dev->driver;
 	int ret = 0;
 
 	if (!drv)
@@ -1180,7 +1180,7 @@ int platform_pm_freeze(struct device *dev)
 
 int platform_pm_thaw(struct device *dev)
 {
-	struct device_driver *drv = dev->driver;
+	const struct device_driver *drv = dev->driver;
 	int ret = 0;
 
 	if (!drv)
@@ -1198,7 +1198,7 @@ int platform_pm_thaw(struct device *dev)
 
 int platform_pm_poweroff(struct device *dev)
 {
-	struct device_driver *drv = dev->driver;
+	const struct device_driver *drv = dev->driver;
 	int ret = 0;
 
 	if (!drv)
@@ -1216,7 +1216,7 @@ int platform_pm_poweroff(struct device *dev)
 
 int platform_pm_restore(struct device *dev)
 {
-	struct device_driver *drv = dev->driver;
+	const struct device_driver *drv = dev->driver;
 	int ret = 0;
 
 	if (!drv)
@@ -1332,7 +1332,7 @@ __ATTRIBUTE_GROUPS(platform_dev);
  * and compare it against the name of the driver. Return whether they match
  * or not.
  */
-static int platform_match(struct device *dev, struct device_driver *drv)
+static int platform_match(struct device *dev, const struct device_driver *drv)
 {
 	struct platform_device *pdev = to_platform_device(dev);
 	struct platform_driver *pdrv = to_platform_driver(drv);
@@ -1420,14 +1420,8 @@ static void platform_remove(struct device *_dev)
 	struct platform_driver *drv = to_platform_driver(_dev->driver);
 	struct platform_device *dev = to_platform_device(_dev);
 
-	if (drv->remove_new) {
-		drv->remove_new(dev);
-	} else if (drv->remove) {
-		int ret = drv->remove(dev);
-
-		if (ret)
-			dev_warn(_dev, "remove callback returned a non-zero value. This will be ignored.\n");
-	}
+	if (drv->remove)
+		drv->remove(dev);
 	dev_pm_domain_detach(_dev, true);
 }