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Ziqi Chen ae2353d862 scsi: ufs: core: Don't perform UFS clkscaling during host async scan 
[ Upstream commit e97633492f ]

When preparing for UFS clock scaling, the UFS driver will quiesce all
sdevs queues in the UFS SCSI host tagset list and then unquiesce them in
ufshcd_clock_scaling_unprepare(). If the UFS SCSI host async scan is in
progress at this time, some LUs may be added to the tagset list between
UFS clkscale prepare and unprepare. This can cause two issues:

1. During clock scaling, there may be I/O requests issued through new
added queues that have not been quiesced, leading to task abort issue.

2. These new added queues that have not been quiesced will be unquiesced
as well when UFS clkscale is unprepared, resulting in warning prints.

Therefore, use the mutex lock scan_mutex in
ufshcd_clock_scaling_prepare() and ufshcd_clock_scaling_unprepare() to
protect it.

Co-developed-by: Can Guo <quic_cang@quicinc.com>
Signed-off-by: Can Guo <quic_cang@quicinc.com>
Signed-off-by: Ziqi Chen <quic_ziqichen@quicinc.com>
Link: https://lore.kernel.org/r/20250522081233.2358565-1-quic_ziqichen@quicinc.com
Suggested-by: Bart Van Assche <bvanassche@acm.org>
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
History 2025-07-06 11:01:36 +02:00
arch riscv: add a data fence for CMODX in the kernel mode 2025-07-06 11:01:35 +02:00
block block: Clear BIO_EMULATES_ZONE_APPEND flag on BIO completion 2025-06-27 11:11:19 +01:00
certs sign-file,extract-cert: use pkcs11 provider for OPENSSL MAJOR >= 3 2024-09-20 19:52:48 +03:00
crypto crypto: api - Redo lookup on EEXIST 2025-06-19 15:31:30 +02:00
Documentation dt-bindings: i2c: nvidia,tegra20-i2c: Specify the required properties 2025-06-27 11:11:44 +01:00
drivers scsi: ufs: core: Don't perform UFS clkscaling during host async scan 2025-07-06 11:01:36 +02:00
fs ceph: fix possible integer overflow in ceph_zero_objects() 2025-07-06 11:01:36 +02:00
include ipv6: replace ipcm6_init calls with ipcm6_init_sk 2025-06-27 11:11:41 +01:00
init rust: clean Rust 1.88.0's unnecessary_transmutes lint 2025-05-18 08:24:51 +02:00
io_uring io_uring/sqpoll: don't put task_struct on tctx setup failure 2025-06-27 11:11:42 +01:00
ipc ipc: fix to protect IPCS lookups using RCU 2025-06-27 11:11:22 +01:00
kernel perf/core: Fix WARN in perf_cgroup_switch() 2025-06-27 11:11:45 +01:00
lib pldmfw: Select CRC32 when PLDMFW is selected 2025-06-27 11:11:42 +01:00
LICENSES LICENSES: add 0BSD license text 2024-09-01 20:43:24 -07:00
mm mm/hugetlb: unshare page tables during VMA split, not before 2025-06-27 11:11:40 +01:00
net sunrpc: don't immediately retransmit on seqno miss 2025-07-06 11:01:32 +02:00
rust rust: arm: fix unknown (to Clang) argument '-mno-fdpic' 2025-07-06 11:01:33 +02:00
samples samples/bpf: Fix compilation failure for samples/bpf on LoongArch Fedora 2025-05-29 11:02:01 +02:00
scripts rust: compile libcore with edition 2024 for 1.87+ 2025-06-27 11:11:40 +01:00
security selinux: fix selinux_xfrm_alloc_user() to set correct ctx_len 2025-06-27 11:11:38 +01:00
sound ASoC: rt1320: fix speaker noise when volume bar is 100% 2025-07-06 11:01:36 +02:00
tools bpftool: Fix cgroup command to only show cgroup bpf programs 2025-06-27 11:11:46 +01:00
usr kbuild: hdrcheck: fix cross build with clang 2025-03-13 13:02:18 +01:00
virt KVM: Add member to struct kvm_gfn_range to indicate private/shared 2025-05-22 14:29:36 +02:00
.clang-format clang-format: Update with v6.11-rc1's for_each macro list 2024-08-02 13:20:31 +02:00
.clippy.toml rust: clean Rust 1.88.0's warning about clippy::disallowed_macros configuration 2025-05-18 08:24:51 +02:00
.cocciconfig scripts: add Linux .cocciconfig for coccinelle 2016-07-22 12:13:39 +02:00
.editorconfig .editorconfig: remove trim_trailing_whitespace option 2024-06-13 16:47:52 +02:00
.get_maintainer.ignore Add Jeff Kirsher to .get_maintainer.ignore 2024-03-08 11:36:54 +00:00
.gitattributes .gitattributes: set diff driver for Rust source code files 2023-05-31 17:48:25 +02:00
.gitignore rust: introduce .clippy.toml 2025-03-13 13:01:42 +01:00
.mailmap mailmap: add entry for Thorsten Blum 2024-11-07 14:14:59 -08:00
.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: Remove self from DSA entry 2024-11-03 12:52:38 -08:00
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 MAINTAINERS: Update Alexey Makhalov's email address 2025-05-22 14:29:46 +02:00
Makefile Linux 6.12.35 2025-06-27 11:11:46 +01:00
README README: Fix spelling 2024-03-18 03:36:32 -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 reStructuredText 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.