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/rpmsg/Kconfig | 84 +++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 84 insertions(+) create mode 100644 drivers/rpmsg/Kconfig (limited to 'drivers/rpmsg/Kconfig') diff --git a/drivers/rpmsg/Kconfig b/drivers/rpmsg/Kconfig new file mode 100644 index 000000000..d3795860f --- /dev/null +++ b/drivers/rpmsg/Kconfig @@ -0,0 +1,84 @@ +# SPDX-License-Identifier: GPL-2.0 + +menu "Rpmsg drivers" + +# RPMSG always gets selected by whoever wants it +config RPMSG + tristate + +config RPMSG_CHAR + tristate "RPMSG device interface" + depends on RPMSG + depends on NET + help + Say Y here to export rpmsg endpoints as device files, usually found + in /dev. They make it possible for user-space programs to send and + receive rpmsg packets. + +config RPMSG_CTRL + tristate "RPMSG control interface" + depends on RPMSG && ( RPMSG_CHAR || RPMSG_CHAR=n ) + help + Say Y here to enable the support of the /dev/rpmsg_ctrlX API. This API + allows user-space programs to create endpoints with specific service name, + source and destination addresses. + +config RPMSG_NS + tristate "RPMSG name service announcement" + depends on RPMSG + help + Say Y here to enable the support of the name service announcement + channel that probes the associated RPMsg device on remote endpoint + service announcement. + +config RPMSG_MTK_SCP + tristate "MediaTek SCP" + depends on MTK_SCP + select RPMSG + help + Say y here to enable support providing communication channels to + remote processors in MediaTek platforms. + This use IPI and IPC to communicate with remote processors. + +config RPMSG_QCOM_GLINK + tristate + select RPMSG + +config RPMSG_QCOM_GLINK_RPM + tristate "Qualcomm RPM Glink driver" + select RPMSG_QCOM_GLINK + depends on HAS_IOMEM + depends on MAILBOX + help + Say y here to enable support for the GLINK RPM communication driver, + which serves as a channel for communication with the RPM in GLINK + enabled systems. + +config RPMSG_QCOM_GLINK_SMEM + tristate "Qualcomm SMEM Glink driver" + select RPMSG_QCOM_GLINK + depends on MAILBOX + depends on QCOM_SMEM + help + Say y here to enable support for the GLINK SMEM communication driver, + which provides support for using the GLINK communication protocol + over SMEM. + +config RPMSG_QCOM_SMD + tristate "Qualcomm Shared Memory Driver (SMD)" + depends on MAILBOX + depends on QCOM_SMEM + select RPMSG + help + Say y here to enable support for the Qualcomm Shared Memory Driver + providing communication channels to remote processors in Qualcomm + platforms. + +config RPMSG_VIRTIO + tristate "Virtio RPMSG bus driver" + depends on HAS_DMA + select RPMSG + select RPMSG_NS + select VIRTIO + +endmenu -- cgit v1.3.1