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 --- include/sound/ac97/compat.h | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) create mode 100644 include/sound/ac97/compat.h (limited to 'include/sound/ac97/compat.h') diff --git a/include/sound/ac97/compat.h b/include/sound/ac97/compat.h new file mode 100644 index 000000000..57e19afa3 --- /dev/null +++ b/include/sound/ac97/compat.h @@ -0,0 +1,17 @@ +/* SPDX-License-Identifier: GPL-2.0 + * + * Copyright (C) 2016 Robert Jarzmik + * + * This file is for backward compatibility with snd_ac97 structure and its + * multiple usages, such as the snd_ac97_bus and snd_ac97_build_ops. + */ + +#ifndef AC97_COMPAT_H +#define AC97_COMPAT_H + +#include + +struct snd_ac97 *snd_ac97_compat_alloc(struct ac97_codec_device *adev); +void snd_ac97_compat_release(struct snd_ac97 *ac97); + +#endif -- cgit v1.3.1