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/most/Kconfig | 45 +++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 45 insertions(+) create mode 100644 drivers/most/Kconfig (limited to 'drivers/most/Kconfig') diff --git a/drivers/most/Kconfig b/drivers/most/Kconfig new file mode 100644 index 000000000..69c9e728b --- /dev/null +++ b/drivers/most/Kconfig @@ -0,0 +1,45 @@ +# SPDX-License-Identifier: GPL-2.0 +menuconfig MOST + tristate "MOST (Media Oriented Systems Transport) support" + depends on HAS_DMA && CONFIGFS_FS + default n + help + Say Y here if you want to enable MOST support. + This driver needs at least one additional component to enable the + desired access from userspace (e.g. character devices) and one that + matches the network controller's hardware interface (e.g. USB). + + To compile this driver as a module, choose M here: the + module will be called most_core. + + If in doubt, say N here. + +if MOST +config MOST_USB_HDM + tristate "USB" + depends on USB + help + Say Y here if you want to connect via USB to network transceiver. + + To compile this driver as a module, choose M here: the + module will be called most_usb. + +config MOST_CDEV + tristate "Cdev" + + help + Say Y here if you want to commumicate via character devices. + + To compile this driver as a module, choose M here: the + module will be called most_cdev. + +config MOST_SND + tristate "Sound" + depends on SND + select SND_PCM + help + Say Y here if you want to commumicate via ALSA/sound devices. + + To compile this driver as a module, choose M here: the + module will be called most_sound. +endif -- cgit v1.3.1