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/platform/Makefile | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) create mode 100644 drivers/platform/Makefile (limited to 'drivers/platform/Makefile') diff --git a/drivers/platform/Makefile b/drivers/platform/Makefile new file mode 100644 index 000000000..fa322e7f8 --- /dev/null +++ b/drivers/platform/Makefile @@ -0,0 +1,17 @@ +# SPDX-License-Identifier: GPL-2.0 +# +# Makefile for linux/drivers/platform +# + +obj-$(CONFIG_X86) += x86/ +obj-$(CONFIG_LOONGARCH) += loongarch/ +obj-$(CONFIG_MELLANOX_PLATFORM) += mellanox/ +obj-$(CONFIG_MIPS) += mips/ +obj-$(CONFIG_OLPC_EC) += olpc/ +obj-$(CONFIG_GOLDFISH) += goldfish/ +obj-$(CONFIG_CHROME_PLATFORMS) += chrome/ +obj-$(CONFIG_CZNIC_PLATFORMS) += cznic/ +obj-$(CONFIG_SURFACE_PLATFORMS) += surface/ +obj-$(CONFIG_ARM64_PLATFORM_DEVICES) += arm64/ +obj-$(CONFIG_BCM2835_VCHIQ) += raspberrypi/ +obj-$(CONFIG_ACPI_WMI) += wmi/ -- cgit v1.3.1