From 27600805e62f800bacf990354632eae4e487d34c Mon Sep 17 00:00:00 2001 From: Yazen Ghannam Date: Thu, 3 Sep 2026 10:43:25 -0500 Subject: x86/amd_node: Fix PCI device reference counting in amd_smn_init() The local "root" pointer is a temporary variable used during the device search. Therefore, refcount related to the search iterators should be cleaned up after the search is complete. Use the __free() cleanup macro to ensure the refcount is decremented when the temporary pointer goes out of scope. Additionally, increment the refcount when caching a root pointer. This ensures the in-use refcount is separate from the temporary search refcounting. Finally, drop the redundant "root = NULL" before the second search loop. The pci_get_class() iterator always decrements the refcount of its "from" argument, so the first loop can only fall through with "root" already NULL. Fixes: 0a4b61d9c2e4 ("x86/amd_node: Fix AMD root device caching") Closes: https://sashiko.dev/#/patchset/20260806160159.230453-1-jason.andryuk%40amd.com Reported-by: Sashiko Assisted-by: LLM Signed-off-by: Yazen Ghannam Signed-off-by: Borislav Petkov (AMD) Reviewed-by: Mario Limonciello (AMD) Cc: Link: https://patch.msgid.link/20260903154325.74343-1-yazen.ghannam@amd.com --- drivers/soc/apple/Kconfig | 57 +++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 57 insertions(+) create mode 100644 drivers/soc/apple/Kconfig (limited to 'drivers/soc/apple/Kconfig') diff --git a/drivers/soc/apple/Kconfig b/drivers/soc/apple/Kconfig new file mode 100644 index 000000000..db30c0ade --- /dev/null +++ b/drivers/soc/apple/Kconfig @@ -0,0 +1,57 @@ +# SPDX-License-Identifier: GPL-2.0-only + +if ARCH_APPLE || COMPILE_TEST + +menu "Apple SoC drivers" + +config APPLE_MAILBOX + tristate "Apple SoC mailboxes" + depends on PM + depends on ARCH_APPLE || (64BIT && COMPILE_TEST) + help + Apple SoCs have various co-processors required for certain + peripherals to work (NVMe, display controller, etc.). This + driver adds support for the mailbox controller used to + communicate with those. + + Say Y here if you have an Apple SoC. + +config APPLE_PMGR_MISC + tristate "Apple SoC PMGR miscellaneous support" + depends on PM + help + The PMGR block in Apple SoCs provides high-level power state + controls for SoC devices. This driver manages miscellaneous + power controls. + + Say 'y' here if you have a Pro/Max/Ultra Apple SoC. + +config APPLE_RTKIT + tristate "Apple RTKit co-processor IPC protocol" + depends on APPLE_MAILBOX + depends on ARCH_APPLE || COMPILE_TEST + help + Apple SoCs such as the M1 come with various co-processors running + their proprietary RTKit operating system. This option enables support + for the protocol library used to communicate with those. It is used + by various client drivers. + + Say 'y' here if you have an Apple SoC. + +config APPLE_SART + tristate "Apple SART DMA address filter" + depends on ARCH_APPLE || COMPILE_TEST + help + Apple SART is a simple DMA address filter used on Apple SoCs such + as the M1. It is usually required for the NVMe coprocessor which does + not use a proper IOMMU. + + Say 'y' here if you have an Apple SoC. + +config APPLE_TUNABLE + tristate + depends on ARCH_APPLE || COMPILE_TEST + +endmenu + +endif -- cgit v1.3.1