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Stefan Wahren 10a58555e0 mailbox: bcm2835: Fix timeout during suspend mode [ Upstream commit `dc09f007ca` ] During noirq suspend phase the Raspberry Pi power driver suffer of firmware property timeouts. The reason is that the IRQ of the underlying BCM2835 mailbox is disabled and rpi_firmware_property_list() will always run into a timeout [1]. Since the VideoCore side isn't consider as a wakeup source, set the IRQF_NO_SUSPEND flag for the mailbox IRQ in order to keep it enabled during suspend-resume cycle. [1] PM: late suspend of devices complete after 1.754 msecs WARNING: CPU: 0 PID: 438 at drivers/firmware/raspberrypi.c:128 rpi_firmware_property_list+0x204/0x22c Firmware transaction 0x00028001 timeout Modules linked in: CPU: 0 PID: 438 Comm: bash Tainted: G C 6.9.3-dirty #17 Hardware name: BCM2835 Call trace: unwind_backtrace from show_stack+0x18/0x1c show_stack from dump_stack_lvl+0x34/0x44 dump_stack_lvl from __warn+0x88/0xec __warn from warn_slowpath_fmt+0x7c/0xb0 warn_slowpath_fmt from rpi_firmware_property_list+0x204/0x22c rpi_firmware_property_list from rpi_firmware_property+0x68/0x8c rpi_firmware_property from rpi_firmware_set_power+0x54/0xc0 rpi_firmware_set_power from _genpd_power_off+0xe4/0x148 _genpd_power_off from genpd_sync_power_off+0x7c/0x11c genpd_sync_power_off from genpd_finish_suspend+0xcc/0xe0 genpd_finish_suspend from dpm_run_callback+0x78/0xd0 dpm_run_callback from device_suspend_noirq+0xc0/0x238 device_suspend_noirq from dpm_suspend_noirq+0xb0/0x168 dpm_suspend_noirq from suspend_devices_and_enter+0x1b8/0x5ac suspend_devices_and_enter from pm_suspend+0x254/0x2e4 pm_suspend from state_store+0xa8/0xd4 state_store from kernfs_fop_write_iter+0x154/0x1a0 kernfs_fop_write_iter from vfs_write+0x12c/0x184 vfs_write from ksys_write+0x78/0xc0 ksys_write from ret_fast_syscall+0x0/0x54 Exception stack(0xcc93dfa8 to 0xcc93dff0) [...] PM: noirq suspend of devices complete after 3095.584 msecs Link: https://github.com/raspberrypi/firmware/issues/1894 Fixes: `0bae6af6d7` ("mailbox: Enable BCM2835 mailbox support") Signed-off-by: Stefan Wahren <wahrenst@gmx.net> Reviewed-by: Florian Fainelli <florian.fainelli@broadcom.com> Signed-off-by: Jassi Brar <jassisinghbrar@gmail.com> Signed-off-by: Sasha Levin <sashal@kernel.org>		History 2024-10-10 11:57:14 +02:00
arch	x86/tdx: Fix "in-kernel MMIO" check	2024-10-04 16:30:05 +02:00
block	block: fix potential invalid pointer dereference in blk_add_partition	2024-10-04 16:29:01 +02:00
certs	certs: Reference revocation list for all keyrings	2023-08-17 20:12:41 +00:00
crypto	KEYS: prevent NULL pointer dereference in find_asymmetric_key()	2024-10-04 16:29:48 +02:00
Documentation	Documentation: KVM: fix warning in "make htmldocs"	2024-10-04 16:30:03 +02:00
drivers	mailbox: bcm2835: Fix timeout during suspend mode	2024-10-10 11:57:14 +02:00
fs	btrfs: fix race setting file private on concurrent lseek using same fd	2024-10-04 16:29:59 +02:00
include	lib/xarray: introduce a new helper xas_get_order	2024-10-04 16:30:02 +02:00
init	rust: fix the default format for CONFIG_{RUSTC,BINDGEN}_VERSION_TEXT	2024-08-29 17:33:29 +02:00
io_uring	io_uring/sqpoll: do not put cpumask on stack	2024-10-04 16:29:44 +02:00
ipc	sysctl: treewide: drop unused argument ctl_table_root::set_ownership(table)	2024-08-11 12:47:13 +02:00
kernel	jump_label: Fix static_key_slow_dec() yet again	2024-10-10 11:57:13 +02:00
lib	mm/filemap: optimize filemap folio adding	2024-10-04 16:30:02 +02:00
LICENSES	LICENSES: Add the copyleft-next-0.3.1 license	2022-11-08 15:44:01 +01:00
mm	mm/damon/vaddr: protect vma traversal in __damon_va_thre_regions() with rcu read lock	2024-10-04 16:30:03 +02:00
net	icmp: change the order of rate limits	2024-10-04 16:29:56 +02:00
rust	rust: kbuild: fix export of bss symbols	2024-09-12 11:11:32 +02:00
samples	samples/bpf: Fix compilation errors with cf-protection option	2024-10-04 16:29:19 +02:00
scripts	scripts: kconfig: merge_config: config files: add a trailing newline	2024-09-18 19:24:05 +02:00
security	bpf: lsm: Set bpf_lsm_blob_sizes.lbs_task to 0	2024-10-04 16:30:02 +02:00
sound	ASoC: rt5682: Return devm_of_clk_add_hw_provider to transfer the error	2024-10-04 16:29:45 +02:00
tools	perf time-utils: Fix 32-bit nsec parsing	2024-10-04 16:29:24 +02:00
usr	initramfs: Encode dependency on KBUILD_BUILD_TIMESTAMP	2023-06-06 17:54:49 +09:00
virt	KVM: Use dedicated mutex to protect kvm_usage_count to avoid deadlock	2024-10-04 16:29:47 +02:00
.clang-format	iommu: Add for_each_group_device()	2023-05-23 08:15:51 +02:00
.cocciconfig	scripts: add Linux .cocciconfig for coccinelle	2016-07-22 12:13:39 +02:00
.get_maintainer.ignore	get_maintainer: add Alan to .get_maintainer.ignore	2022-08-20 15:17:44 -07:00
.gitattributes	.gitattributes: set diff driver for Rust source code files	2023-05-31 17:48:25 +02:00
.gitignore	Remove *.orig pattern from .gitignore	2024-10-04 16:29:44 +02:00
.mailmap	20 hotfixes. 12 are cc:stable and the remainder address post-6.5 issues	2023-10-24 09:52:16 -10:00
.rustfmt.toml	rust: add `.rustfmt.toml`	2022-09-28 09:02:20 +02:00
COPYING	COPYING: state that all contributions really are covered by this file	2020-02-10 13:32:20 -08:00
CREDITS	USB: Remove Wireless USB and UWB documentation	2023-08-09 14:17:32 +02:00
Kbuild	Kbuild updates for v6.1	2022-10-10 12:00:45 -07:00
Kconfig	kbuild: ensure full rebuild when the compiler is updated	2020-05-12 13:28:33 +09:00
MAINTAINERS	membarrier: riscv: Add full memory barrier in switch_mm()	2024-09-12 11:11:45 +02:00
Makefile	Linux 6.6.54	2024-10-04 16:30:05 +02:00
README	Drop all 00-INDEX files from Documentation/	2018-09-09 15:08:58 -06:00

README

Linux kernel
============

There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.  The formatted documentation can also be read online at:

    https://www.kernel.org/doc/html/latest/

There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.