kernel/drivers/platform/x86/intel/pmt, branch linux-rolling-stable

platform/x86/intel/pmt/discovery: use valid device pointer in dev_err_probe

2026-01-08T09:16:48Z

[ Upstream commit 66e245db16f0175af656cd812b6dc1a5e1f7b80a ] The PMT feature probe creates a child device with device_create(). If device creation fail, the code pass priv->dev (which is an ERR_PTR) to dev_err_probe(), which is not a valid device pointer. This patch change the dev_err_probe() call to use the parent auxiliary device (&auxdev->dev) and update the error message to reference the parent device name. It ensure correct error reporting and avoid passing an invalid device pointer. Fixes: d9a078809356 ("platform/x86/intel/pmt: Add PMT Discovery driver") Signed-off-by: Alok Tiwari Link: https://patch.msgid.link/20251224095133.115678-1-alok.a.tiwari@oracle.com Reviewed-by: Ilpo Järvinen Signed-off-by: Ilpo Järvinen Signed-off-by: Sasha Levin

platform/x86/intel/pmt: Fix kobject memory leak on init failure

2026-01-08T09:16:46Z

[ Upstream commit 00c22b1e84288bf0e17ab1e7e59d75237cf0d0dc ] When kobject_init_and_add() fails in pmt_features_discovery(), the function returns without calling kobject_put(). This violates the kobject API contract where kobject_put() must be called even on initialization failure to properly release allocated resources. Fixes: d9a078809356 ("platform/x86/intel/pmt: Add PMT Discovery driver") Signed-off-by: Kaushlendra Kumar Link: https://patch.msgid.link/20251223084041.3832933-1-kaushlendra.kumar@intel.com Reviewed-by: Ilpo Järvinen Signed-off-by: Ilpo Järvinen Signed-off-by: Sasha Levin

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

2025-07-29T19:15:39Z

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 - 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 for Opaque - 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 ...

platform/x86/intel/pmt: support BMG crashlog

2025-07-22T14:39:13Z

The Battlemage GPU has the type 1 version 2 crashlog feature. Update the crashlog driver to support this crashlog version. Signed-off-by: Michael J. Ruhl Link: https://lore.kernel.org/r/20250713172943.7335-14-michael.j.ruhl@intel.com [ij: make crashlog_type1_ver2 static] Reviewed-by: Ilpo Järvinen Signed-off-by: Ilpo Järvinen

platform/x86/intel/pmt: use a version struct

2025-07-22T14:39:10Z

In preparation for supporting multiple crashlog versions, use a struct to keep bit offset info for the status and control bits. Reviewed-by: Ilpo Järvinen Signed-off-by: Michael J. Ruhl Link: https://lore.kernel.org/r/20250713172943.7335-13-michael.j.ruhl@intel.com [ij: move crashlog_type1_ver0 to its final place & add consts to crashlog_info] Signed-off-by: Ilpo Järvinen

platform/x86/intel/pmt: refactor base parameter

2025-07-22T14:39:08Z

To support an upcoming crashlog change, use the parent of struct intel_pmt_entry, struct crashlog_entry, as a main parameter. Using struct crashlog_entry will allow for a more flexible interface to control the crashlog feature. - Refactor to use struct crashlog_entry in place of struct intel_pmt_entry - Rename variables from "entry" to "crashlog" Reviewed-by: Ilpo Järvinen Signed-off-by: Michael J. Ruhl Link: https://lore.kernel.org/r/20250713172943.7335-12-michael.j.ruhl@intel.com Signed-off-by: Ilpo Järvinen

platform/x86/intel/pmt: add register access helpers

2025-07-22T14:39:06Z

The control register is used in a read/modify/write pattern. The status register is used in a read/check bit pattern. Add helpers to eliminate common code. Signed-off-by: Michael J. Ruhl Link: https://lore.kernel.org/r/20250713172943.7335-11-michael.j.ruhl@intel.com Reviewed-by: Ilpo Järvinen Signed-off-by: Ilpo Järvinen

platform/x86/intel/pmt: decouple sysfs and namespace

2025-07-22T14:39:03Z

The PMT namespace includes the crashlog sysfs attribute information. Other crashlog version/types may need different sysfs attributes. Coupling the attributes with the namespace blocks this usage. Decouple sysfs attributes from the name space and add them to the specific entry. Reviewed-by: Ilpo Järvinen Signed-off-by: Michael J. Ruhl Link: https://lore.kernel.org/r/20250713172943.7335-10-michael.j.ruhl@intel.com Signed-off-by: Ilpo Järvinen

platform/x86/intel/pmt: correct types

2025-07-22T14:39:01Z

A couple of local variables do not match the return types of some of the functions. Update the mismatched types to match. Reviewed-by: Ilpo Järvinen Reviewed-by: David E. Box Signed-off-by: Michael J. Ruhl Link: https://lore.kernel.org/r/20250713172943.7335-9-michael.j.ruhl@intel.com Signed-off-by: Ilpo Järvinen

platform/x86/intel/pmt: re-order trigger logic

2025-07-22T14:38:58Z

Setting the clear bit or checking the complete bit before checking to see if crashlog is disabled seems incorrect. Check disable before accessing any other bits. Reviewed-by: Ilpo Järvinen Reviewed-by: David E. Box Signed-off-by: Michael J. Ruhl Link: https://lore.kernel.org/r/20250713172943.7335-8-michael.j.ruhl@intel.com Signed-off-by: Ilpo Järvinen