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Dmytro Maluka d87d275ee5 ASoC: da7219: Flush pending AAD IRQ when suspending [ Upstream commit `91e292917d` ] da7219_aad_suspend() disables jack detection, which should prevent generating new interrupts by DA7219 while suspended. However, there is a theoretical possibility that there is a pending interrupt generated just before suspending DA7219 and not handled yet, so the IRQ handler may still run after DA7219 is suspended. To prevent that, wait until the pending IRQ handling is done. This patch arose as an attempt to fix the following I2C failure occurring sometimes during system suspend or resume: [ 355.876211] i2c_designware i2c_designware.3: Transfer while suspended [ 355.876245] WARNING: CPU: 2 PID: 3576 at drivers/i2c/busses/i2c-designware-master.c:570 i2c_dw_xfer+0x411/0x440 ... [ 355.876462] Call Trace: [ 355.876468] <TASK> [ 355.876475] ? update_load_avg+0x1b3/0x615 [ 355.876484] __i2c_transfer+0x101/0x1d8 [ 355.876494] i2c_transfer+0x74/0x10d [ 355.876504] regmap_i2c_read+0x6a/0x9c [ 355.876513] _regmap_raw_read+0x179/0x223 [ 355.876521] regmap_raw_read+0x1e1/0x28e [ 355.876527] regmap_bulk_read+0x17d/0x1ba [ 355.876532] ? __wake_up+0xed/0x1bb [ 355.876542] da7219_aad_irq_thread+0x54/0x2c9 [snd_soc_da7219 5fb8ebb2179cf2fea29af090f3145d68ed8e2184] [ 355.876556] irq_thread+0x13c/0x231 [ 355.876563] ? irq_forced_thread_fn+0x5f/0x5f [ 355.876570] ? irq_thread_fn+0x4d/0x4d [ 355.876576] kthread+0x13a/0x152 [ 355.876581] ? synchronize_irq+0xc3/0xc3 [ 355.876587] ? kthread_blkcg+0x31/0x31 [ 355.876592] ret_from_fork+0x1f/0x30 [ 355.876601] </TASK> which indicates that the AAD IRQ handler is unexpectedly running when DA7219 is suspended, and as a result, is trying to read data from DA7219 over I2C and is hitting the I2C driver "Transfer while suspended" failure. However, with this patch the above failure is still reproducible. So this patch does not fix any real observed issue so far, but at least is useful for confirming that the above issue is not caused by a pending IRQ but rather looks like a DA7219 hardware issue with an IRQ unexpectedly generated after jack detection is already disabled. Signed-off-by: Dmytro Maluka <dmy@semihalf.com> Link: https://lore.kernel.org/r/20230717193737.161784-2-dmy@semihalf.com Signed-off-by: Mark Brown <broonie@kernel.org> Signed-off-by: Sasha Levin <sashal@kernel.org>		History 2023-09-13 09:47:50 +02:00
arch	mmc: au1xmmc: force non-modular build and remove symbol_get usage	2023-09-06 21:25:29 +01:00
block	blk-crypto: dynamically allocate fallback profile	2023-08-23 17:32:53 +02:00
certs	KEYS: Add missing function documentation	2023-04-24 16:15:52 +03:00
crypto	crypto: jitter - correct health test during initialization	2023-07-19 16:36:19 +02:00
Documentation	dt-bindings: sc16is7xx: Add property to change GPIO function	2023-09-06 21:25:32 +01:00
drivers	media: pci: cx23885: fix error handling for cx23885 ATSC boards	2023-09-13 09:47:50 +02:00
fs	ksmbd: fix out of bounds in init_smb2_rsp_hdr()	2023-09-13 09:47:50 +02:00
include	usb: typec: tcpci: clear the fault status bit	2023-09-06 21:25:33 +01:00
init	init, x86: Move mem_encrypt_init() into arch_cpu_finalize_init()	2023-08-08 20:04:49 +02:00
io_uring	io_uring: correct check for O_TMPFILE	2023-08-16 18:32:19 +02:00
ipc	Merge branch 'work.namespace' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2023-02-24 19:20:07 -08:00
kernel	modules: only allow symbol_get of EXPORT_SYMBOL_GPL modules	2023-09-06 21:25:29 +01:00
lib	maple_tree: disable mas_wr_append() when other readers are possible	2023-08-30 14:52:44 +02:00
LICENSES	LICENSES: Add the copyleft-next-0.3.1 license	2022-11-08 15:44:01 +01:00
mm	madvise:madvise_free_pte_range(): don't use mapcount() against large folio for sharing check	2023-08-30 14:52:42 +02:00
net	9p: virtio: make sure 'offs' is initialized in zc_request	2023-09-13 09:47:50 +02:00
rust	rust: macros: vtable: fix `HAS_*` redefinition (`gen_const_name`)	2023-08-23 17:32:36 +02:00
samples	samples: ftrace: Save required argument registers in sample trampolines	2023-07-23 13:54:09 +02:00
scripts	kbuild: rust: avoid creating temporary files	2023-07-27 08:57:06 +02:00
security	selinux: set next pointer before attaching to list	2023-08-30 14:52:40 +02:00
sound	ASoC: da7219: Flush pending AAD IRQ when suspending	2023-09-13 09:47:50 +02:00
tools	selftests/mm: FOLL_LONGTERM need to be updated to 0x100	2023-08-30 14:52:36 +02:00
usr	initramfs: Check negative timestamp to prevent broken cpio archive	2023-04-16 17:37:01 +09:00
virt	KVM: Grab a reference to KVM for VM and vCPU stats file descriptors	2023-08-03 10:26:01 +02:00
.clang-format	cxl for v6.4	2023-04-30 11:51:51 -07:00
.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: use 'dts' diff driver for *.dtso files	2023-02-26 15:28:23 +09:00
.gitignore	linux-kselftest-kunit-6.4-rc1	2023-04-24 12:31:32 -07:00
.mailmap	mailmap: add entries for Ben Dooks	2023-06-19 13:19:35 -07:00
.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	MAINTAINERS: sctp: move Neil to CREDITS	2023-05-12 08:51:32 +01:00
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	Networking fixes for 6.4-rc8, including fixes from ipsec, bpf,	2023-06-22 17:59:51 -07:00
Makefile	Linux 6.4.15	2023-09-06 21:25:33 +01:00
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.