Merge tag 'driver-core-6.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/driver-core/driver-core

Pull driver core updates from Danilo Krummrich:
 "debugfs:
   - Remove unneeded debugfs_file_{get,put}() instances
   - Remove last remnants of debugfs_real_fops()
   - Allow storing non-const void * in struct debugfs_inode_info::aux

  sysfs:
   - Switch back to attribute_group::bin_attrs (treewide)
   - Switch back to bin_attribute::read()/write() (treewide)
   - Constify internal references to 'struct bin_attribute'

  Support cache-ids for device-tree systems:
   - Add arch hook arch_compact_of_hwid()
   - Use arch_compact_of_hwid() to compact MPIDR values on arm64

  Rust:
   - Device:
       - Introduce CoreInternal device context (for bus internal methods)
       - Provide generic drvdata accessors for bus devices
       - Provide Driver::unbind() callbacks
       - Use the infrastructure above for auxiliary, PCI and platform
       - Implement Device::as_bound()
       - Rename Device::as_ref() to Device::from_raw() (treewide)
       - Implement fwnode and device property abstractions
       - Implement example usage in the Rust platform sample driver
   - Devres:
       - Remove the inner reference count (Arc) and use pin-init instead
       - Replace Devres::new_foreign_owned() with devres::register()
       - Require T to be Send in Devres<T>
       - Initialize the data kept inside a Devres last
       - Provide an accessor for the Devres associated Device
   - Device ID:
       - Add support for ACPI device IDs and driver match tables
       - Split up generic device ID infrastructure
       - Use generic device ID infrastructure in net::phy
   - DMA:
       - Implement the dma::Device trait
       - Add DMA mask accessors to dma::Device
       - Implement dma::Device for PCI and platform devices
       - Use DMA masks from the DMA sample module
   - I/O:
       - Implement abstraction for resource regions (struct resource)
       - Implement resource-based ioremap() abstractions
       - Provide platform device accessors for I/O (remap) requests
   - Misc:
       - Support fallible PinInit types in Revocable
       - Implement Wrapper<T> for Opaque<T>
       - Merge pin-init blanket dependencies (for Devres)

  Misc:
   - Fix OF node leak in auxiliary_device_create()
   - Use util macros in device property iterators
   - Improve kobject sample code
   - Add device_link_test() for testing device link flags
   - Fix typo in Documentation/ABI/testing/sysfs-kernel-address_bits
   - Hint to prefer container_of_const() over container_of()"

* tag 'driver-core-6.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/driver-core/driver-core: (84 commits)
  rust: io: fix broken intra-doc links to `platform::Device`
  rust: io: fix broken intra-doc link to missing `flags` module
  rust: io: mem: enable IoRequest doc-tests
  rust: platform: add resource accessors
  rust: io: mem: add a generic iomem abstraction
  rust: io: add resource abstraction
  rust: samples: dma: set DMA mask
  rust: platform: implement the `dma::Device` trait
  rust: pci: implement the `dma::Device` trait
  rust: dma: add DMA addressing capabilities
  rust: dma: implement `dma::Device` trait
  rust: net::phy Change module_phy_driver macro to use module_device_table macro
  rust: net::phy represent DeviceId as transparent wrapper over mdio_device_id
  rust: device_id: split out index support into a separate trait
  device: rust: rename Device::as_ref() to Device::from_raw()
  arm64: cacheinfo: Provide helper to compress MPIDR value into u32
  cacheinfo: Add arch hook to compress CPU h/w id into 32 bits for cache-id
  cacheinfo: Set cache 'id' based on DT data
  container_of: Document container_of() is not to be used in new code
  driver core: auxiliary bus: fix OF node leak
  ...

1 files changed, 10 insertions, 20 deletions

diff --git a/drivers/thermal/testing/command.c b/drivers/thermal/testing/command.c
index ba11d70e8021..1159ecea57e7 100644
--- a/drivers/thermal/testing/command.c
+++ b/drivers/thermal/testing/command.c
@@ -139,31 +139,21 @@ static int tt_command_exec(int index, const char *arg)
 	return ret;
 }
 
-static ssize_t tt_command_process(struct dentry *dentry, const char __user *user_buf,
-				  size_t count)
+static ssize_t tt_command_process(char *s)
 {
-	char *buf __free(kfree);
 	char *arg;
 	int i;
 
-	buf = kmalloc(count + 1, GFP_KERNEL);
-	if (!buf)
-		return -ENOMEM;
+	strim(s);
 
-	if (copy_from_user(buf, user_buf, count))
-		return -EFAULT;
-
-	buf[count] = '\0';
-	strim(buf);
-
-	arg = strstr(buf, ":");
+	arg = strchr(s, ':');
 	if (arg) {
 		*arg = '\0';
 		arg++;
 	}
 
 	for (i = 0; i < ARRAY_SIZE(tt_command_strings); i++) {
-		if (!strcmp(buf, tt_command_strings[i]))
+		if (!strcmp(s, tt_command_strings[i]))
 			return tt_command_exec(i, arg);
 	}
 
@@ -173,20 +163,20 @@ static ssize_t tt_command_process(struct dentry *dentry, const char __user *user
 static ssize_t tt_command_write(struct file *file, const char __user *user_buf,
 				size_t count, loff_t *ppos)
 {
-	struct dentry *dentry = file->f_path.dentry;
+	char buf[TT_COMMAND_SIZE];
 	ssize_t ret;
 
 	if (*ppos)
 		return -EINVAL;
 
-	if (count + 1 > TT_COMMAND_SIZE)
+	if (count > TT_COMMAND_SIZE - 1)
 		return -E2BIG;
 
-	ret = debugfs_file_get(dentry);
-	if (unlikely(ret))
-		return ret;
+	if (copy_from_user(buf, user_buf, count))
+		return -EFAULT;
+	buf[count] = '\0';
 
-	ret = tt_command_process(dentry, user_buf, count);
+	ret = tt_command_process(buf);
 	if (ret)
 		return ret;