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/input/vivaldi-fmap.c | 40 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 40 insertions(+) create mode 100644 drivers/input/vivaldi-fmap.c (limited to 'drivers/input/vivaldi-fmap.c') diff --git a/drivers/input/vivaldi-fmap.c b/drivers/input/vivaldi-fmap.c new file mode 100644 index 000000000..978949eba --- /dev/null +++ b/drivers/input/vivaldi-fmap.c @@ -0,0 +1,40 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Helpers for ChromeOS Vivaldi keyboard function row mapping + * + * Copyright (C) 2022 Google, Inc + */ + +#include +#include +#include +#include +#include + +/** + * vivaldi_function_row_physmap_show - Print vivaldi function row physmap attribute + * @data: The vivaldi function row map + * @buf: Buffer to print the function row phsymap to + */ +ssize_t vivaldi_function_row_physmap_show(const struct vivaldi_data *data, + char *buf) +{ + ssize_t size = 0; + int i; + const u32 *physmap = data->function_row_physmap; + + if (!data->num_function_row_keys) + return 0; + + for (i = 0; i < data->num_function_row_keys; i++) + size += sysfs_emit_at(buf, size, + "%s%02X", size ? " " : "", physmap[i]); + if (size) + size += sysfs_emit_at(buf, size, "\n"); + + return size; +} +EXPORT_SYMBOL_GPL(vivaldi_function_row_physmap_show); + +MODULE_DESCRIPTION("Helpers for ChromeOS Vivaldi keyboard function row mapping"); +MODULE_LICENSE("GPL"); -- cgit v1.3.1