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Bjorn Andersson 2047eeb38d slimbus: qcom-ngd-ctrl: Register callbacks after creating the ngd [ Upstream commit `2a9d50e9ea` ] When the remoteproc starts in parallel with the NGD driver being probed, or the remoteproc is already up when the PDR lookup is being registered, or in the theoretical event that we get an interrupt from the hardware, these callbacks will operate on uninitialized data. This result in issues to boot the affected boards. One such example can be seen in the following fault, where qcom_slim_ngd_ssr_pdr_notify() schedules work on the NULL ngd_up_work. [ 21.858578] ------------[ cut here ]------------ [ 21.858745] WARNING: kernel/workqueue.c:2338 at __queue_work+0x5e0/0x790, CPU#2: kworker/2:2/116 ... [ 21.859251] Call trace: [ 21.859255] __queue_work+0x5e0/0x790 (P) [ 21.859265] queue_work_on+0x6c/0xf0 [ 21.859273] qcom_slim_ngd_ssr_pdr_notify+0x110/0x150 [slim_qcom_ngd_ctrl] [ 21.859304] qcom_slim_ngd_ssr_notify+0x24/0x40 [slim_qcom_ngd_ctrl] [ 21.859318] notifier_call_chain+0xa4/0x230 [ 21.859329] srcu_notifier_call_chain+0x64/0xb8 [ 21.859338] ssr_notify_start+0x40/0x78 [qcom_common] [ 21.859355] rproc_start+0x130/0x230 [ 21.859367] rproc_boot+0x3d4/0x518 ... Move the enablement of interrupts, and the registration of SSR and PDR until after the NGD device has been registered. This could be further refined by moving initialization to the control driver probe and by removing the platform driver model from the picture. Fixes: `917809e228` ("slimbus: ngd: Add qcom SLIMBus NGD driver") Cc: stable@vger.kernel.org Reviewed-by: Mukesh Ojha <mukesh.ojha@oss.qualcomm.com> Signed-off-by: Bjorn Andersson <bjorn.andersson@oss.qualcomm.com> Signed-off-by: Srinivas Kandagatla <srini@kernel.org> Link: https://patch.msgid.link/20260530204421.116824-6-srini@kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Sasha Levin <sashal@kernel.org>		History 2026-07-24 15:51:16 +02:00
arch	KVM: SVM: Fix page overflow in sev_dbg_crypt() for ENCRYPT path	2026-07-04 13:39:40 +02:00
block	blk-cgroup: Fix NULL deref caused by blkg_policy_data being installed before init	2026-06-19 13:33:49 +02:00
certs	certs/blacklist_hashes.c: fix const confusion in certs blacklist	2022-06-22 14:22:01 +02:00
crypto	crypto: af_alg - Set merge to zero early in af_alg_sendmsg	2026-07-04 13:39:39 +02:00
Documentation	crypto: qat - remove unused character device and IOCTLs	2026-07-04 13:39:41 +02:00
drivers	slimbus: qcom-ngd-ctrl: Register callbacks after creating the ngd	2026-07-24 15:51:16 +02:00
fs	userfaultfd: gate must_wait writability check on pte_present()	2026-07-24 15:51:15 +02:00
include	phonet: Pass net and ifindex to phonet_address_notify().	2026-07-04 13:39:41 +02:00
init	randomize_kstack: Maintain kstack_offset per task	2026-06-19 13:33:41 +02:00
io_uring	io_uring/poll: fix signed comparison in io_poll_get_ownership()	2026-06-19 13:33:39 +02:00
ipc	ipc/shm: serialize orphan cleanup with shm_nattch updates	2026-06-19 13:33:38 +02:00
kernel	bpf: use kvfree() for replaced sysctl write buffer	2026-07-04 13:39:39 +02:00
lib	lib/crypto: mpi: Fix integer underflow in mpi_read_raw_from_sgl()	2026-06-19 13:33:39 +02:00
LICENSES	LICENSES/dual/CC-BY-4.0: Git rid of "smart quotes"	2021-07-15 06:31:24 -06:00
mm	mm/huge_memory: update file PMD counter before folio_put()	2026-06-19 13:33:49 +02:00
net	net/sched: act_pedit: use NLA_POLICY for parsing 'ex' keys	2026-07-24 15:51:15 +02:00
samples	samples: mei: Fix building on musl libc	2025-08-28 16:24:07 +02:00
scripts	scripts/dtc: Remove unused dts_version in dtc-lexer.l	2026-06-01 17:35:12 +02:00
security	keys: Pin request_key_auth payload in instantiate paths	2026-07-04 13:39:39 +02:00
sound	ALSA: hda/hdmi: Add quirk for TUXEDO IBS14G6	2026-06-19 13:33:50 +02:00
tools	kselftest/arm64: signal: Skip SVE signal test if not enough VLs supported	2026-07-04 13:39:37 +02:00
usr	kbuild: hdrcheck: fix cross build with clang	2025-06-27 11:05:22 +01:00
virt	KVM: Reject wrapped offset in kvm_reset_dirty_gfn()	2026-06-01 17:35:44 +02:00
.clang-format	clang-format: Update with the latest for_each macro list	2021-05-12 23:32:39 +02:00
.cocciconfig	scripts: add Linux .cocciconfig for coccinelle	2016-07-22 12:13:39 +02:00
.get_maintainer.ignore	Opt out of scripts/get_maintainer.pl	2019-05-16 10:53:40 -07:00
.gitattributes	.gitattributes: use 'dts' diff driver for dts files	2019-12-04 19:44:11 -08:00
.gitignore	Remove *.orig pattern from .gitignore	2024-10-17 15:11:10 +02:00
.mailmap	mailmap: add Andrej Shadura	2021-10-18 20:22:03 -10:00
COPYING	COPYING: state that all contributions really are covered by this file	2020-02-10 13:32:20 -08:00
CREDITS	MAINTAINERS: Move Daniel Drake to credits	2021-09-21 08:34:58 +03:00
Kbuild	kbuild: rename hostprogs-y/always to hostprogs/always-y	2020-02-04 01:53:07 +09:00
Kconfig	kbuild: ensure full rebuild when the compiler is updated	2020-05-12 13:28:33 +09:00
MAINTAINERS	staging: rtl8712: Remove driver using deprecated API wext	2025-12-07 06:09:36 +09:00
Makefile	Linux 5.15.211	2026-07-04 13:39:41 +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.