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/aspeed/Kconfig | 56 ++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 56 insertions(+) create mode 100644 drivers/soc/aspeed/Kconfig (limited to 'drivers/soc/aspeed/Kconfig') diff --git a/drivers/soc/aspeed/Kconfig b/drivers/soc/aspeed/Kconfig new file mode 100644 index 000000000..63a656449 --- /dev/null +++ b/drivers/soc/aspeed/Kconfig @@ -0,0 +1,56 @@ +# SPDX-License-Identifier: GPL-2.0-only + +if ARCH_ASPEED || COMPILE_TEST + +menu "ASPEED SoC drivers" + +config ASPEED_LPC_CTRL + tristate "ASPEED LPC firmware cycle control" + select REGMAP + select MFD_SYSCON + default ARCH_ASPEED + help + Control LPC firmware cycle mappings through ioctl()s. The driver + also provides a read/write interface to a BMC ram region where the + host LPC read/write region can be buffered. + +config ASPEED_LPC_SNOOP + tristate "ASPEED LPC snoop support" + select REGMAP + select MFD_SYSCON + default ARCH_ASPEED + help + Provides a driver to control the LPC snoop interface which + allows the BMC to listen on and save the data written by + the host to an arbitrary LPC I/O port. + +config ASPEED_UART_ROUTING + tristate "ASPEED uart routing control" + select REGMAP + select MFD_SYSCON + default ARCH_ASPEED + help + Provides a driver to control the UART routing paths, allowing + users to perform runtime configuration of the RX muxes among + the UART controllers and I/O pins. + +config ASPEED_P2A_CTRL + tristate "ASPEED P2A (VGA MMIO to BMC) bridge control" + select REGMAP + select MFD_SYSCON + default ARCH_ASPEED + help + Control ASPEED P2A VGA MMIO to BMC mappings through ioctl()s. The + driver also provides an interface for userspace mappings to a + pre-defined region. + +config ASPEED_SOCINFO + bool "ASPEED SoC Information driver" + select SOC_BUS + default ARCH_ASPEED + help + Say yes to support decoding of ASPEED BMC information. + +endmenu + +endif -- cgit v1.3.1