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/video/fbdev/mmp/Kconfig | 12 + drivers/video/fbdev/mmp/Makefile | 4 + drivers/video/fbdev/mmp/core.c | 239 ++++ drivers/video/fbdev/mmp/fb/Kconfig | 8 + drivers/video/fbdev/mmp/fb/Makefile | 2 + drivers/video/fbdev/mmp/fb/mmpfb.c | 661 ++++++++++ drivers/video/fbdev/mmp/fb/mmpfb.h | 41 + drivers/video/fbdev/mmp/hw/Kconfig | 17 + drivers/video/fbdev/mmp/hw/Makefile | 3 + drivers/video/fbdev/mmp/hw/mmp_ctrl.c | 575 +++++++++ drivers/video/fbdev/mmp/hw/mmp_ctrl.h | 1456 +++++++++++++++++++++++ drivers/video/fbdev/mmp/hw/mmp_spi.c | 167 +++ drivers/video/fbdev/mmp/panel/Kconfig | 6 + drivers/video/fbdev/mmp/panel/Makefile | 2 + drivers/video/fbdev/mmp/panel/tpo_tj032md01bw.c | 172 +++ 15 files changed, 3365 insertions(+) create mode 100644 drivers/video/fbdev/mmp/Kconfig create mode 100644 drivers/video/fbdev/mmp/Makefile create mode 100644 drivers/video/fbdev/mmp/core.c create mode 100644 drivers/video/fbdev/mmp/fb/Kconfig create mode 100644 drivers/video/fbdev/mmp/fb/Makefile create mode 100644 drivers/video/fbdev/mmp/fb/mmpfb.c create mode 100644 drivers/video/fbdev/mmp/fb/mmpfb.h create mode 100644 drivers/video/fbdev/mmp/hw/Kconfig create mode 100644 drivers/video/fbdev/mmp/hw/Makefile create mode 100644 drivers/video/fbdev/mmp/hw/mmp_ctrl.c create mode 100644 drivers/video/fbdev/mmp/hw/mmp_ctrl.h create mode 100644 drivers/video/fbdev/mmp/hw/mmp_spi.c create mode 100644 drivers/video/fbdev/mmp/panel/Kconfig create mode 100644 drivers/video/fbdev/mmp/panel/Makefile create mode 100644 drivers/video/fbdev/mmp/panel/tpo_tj032md01bw.c (limited to 'drivers/video/fbdev/mmp') diff --git a/drivers/video/fbdev/mmp/Kconfig b/drivers/video/fbdev/mmp/Kconfig new file mode 100644 index 000000000..5c6cc97c9 --- /dev/null +++ b/drivers/video/fbdev/mmp/Kconfig @@ -0,0 +1,12 @@ +# SPDX-License-Identifier: GPL-2.0-only +menuconfig MMP_DISP + tristate "Marvell MMP Display Subsystem support" + depends on CPU_PXA910 || CPU_MMP2 || COMPILE_TEST + help + Marvell Display Subsystem support. + +if MMP_DISP +source "drivers/video/fbdev/mmp/hw/Kconfig" +source "drivers/video/fbdev/mmp/panel/Kconfig" +source "drivers/video/fbdev/mmp/fb/Kconfig" +endif diff --git a/drivers/video/fbdev/mmp/Makefile b/drivers/video/fbdev/mmp/Makefile new file mode 100644 index 000000000..84204c04e --- /dev/null +++ b/drivers/video/fbdev/mmp/Makefile @@ -0,0 +1,4 @@ +# SPDX-License-Identifier: GPL-2.0-only +obj-$(CONFIG_MMP_DISP) += mmp_disp.o hw/ panel/ fb/ + +mmp_disp-y += core.o diff --git a/drivers/video/fbdev/mmp/core.c b/drivers/video/fbdev/mmp/core.c new file mode 100644 index 000000000..3c35b0a3e --- /dev/null +++ b/drivers/video/fbdev/mmp/core.c @@ -0,0 +1,239 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * linux/drivers/video/mmp/common.c + * This driver is a common framework for Marvell Display Controller + * + * Copyright (C) 2012 Marvell Technology Group Ltd. + * Authors: Zhou Zhu + */ + +#include +#include +#include +#include +#include