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Filename Latest commit message Latest commit date
Damien Le Moal db3f016ad5 ata: libata: Fix sata_down_spd_limit() when no link speed is reported 
[ Upstream commit 69f2c9346313ba3d3dfa4091ff99df26c67c9021 ]

Commit 2dc0b46b5e ("libata: sata_down_spd_limit should return if
driver has not recorded sstatus speed") changed the behavior of
sata_down_spd_limit() to return doing nothing if a drive does not report
a current link speed, to avoid reducing the link speed to the lowest 1.5
Gbps speed.

However, the change assumed that a speed was recorded before probing
(e.g. before a suspend/resume) and set in link->sata_spd. This causes
problems with adapters/drives combination failing to establish a link
speed during probe autonegotiation. One example reported of this problem
is an mvebu adapter with a 3Gbps port-multiplier box: autonegotiation
fails, leaving no recorded link speed and no reported current link
speed. Probe retries also fail as no action is taken by sata_set_spd()
after each retry.

Fix this by returning early in sata_down_spd_limit() only if we do have
a recorded link speed, that is, if link->sata_spd is not 0. With this
fix, a failed probe not leading to a recorded link speed is retried at
the lower 1.5 Gbps speed, with the link speed potentially increased
later on the second revalidate of the device if the device reports
that it supports higher link speeds.

Reported-by: Marius Dinu <marius@psihoexpert.ro>
Fixes: 2dc0b46b5e ("libata: sata_down_spd_limit should return if driver has not recorded sstatus speed")
Reviewed-by: Niklas Cassel <niklas.cassel@wdc.com>
Tested-by: Marius Dinu <marius@psihoexpert.ro>
Signed-off-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-02-22 12:50:24 +01:00
arch arm64: dts: imx8mm: Fix pad control for UART1_DTE_RX 2023-02-22 12:50:23 +01:00
block blk-cgroup: fix missing pd_online_fn() while activating policy 2023-02-06 07:52:48 +01:00
certs certs/blacklist_hashes.c: fix const confusion in certs blacklist 2022-06-22 14:11:22 +02:00
crypto crypto: tcrypt - Fix multibuffer skcipher speed test mem leak 2023-01-18 11:41:19 +01:00
Documentation docs: Fix path paste-o for /sys/kernel/warn_count 2023-02-06 07:52:50 +01:00
drivers ata: libata: Fix sata_down_spd_limit() when no link speed is reported 2023-02-22 12:50:24 +01:00
fs squashfs: harden sanity check in squashfs_read_xattr_id_table 2023-02-22 12:50:24 +01:00
include panic: Consolidate open-coded panic_on_warn checks 2023-02-06 07:52:50 +01:00
init init/Kconfig: fix CC_HAS_ASM_GOTO_TIED_OUTPUT test with dash 2022-12-08 11:22:59 +01:00
ipc ipc/sem: Fix dangling sem_array access in semtimedop race 2022-12-08 11:23:06 +01:00
kernel exit: Use READ_ONCE() for all oops/warn limit reads 2023-02-06 07:52:50 +01:00
lib netlink: prevent potential spectre v1 gadgets 2023-02-06 07:52:45 +01:00
LICENSES
mm panic: Consolidate open-coded panic_on_warn checks 2023-02-06 07:52:50 +01:00
net can: j1939: fix errant WARN_ON_ONCE in j1939_session_deactivate 2023-02-22 12:50:24 +01:00
samples samples: vfio-mdev: Fix missing pci_disable_device() in mdpy_fb_probe() 2023-01-18 11:41:26 +01:00
scripts ftrace/scripts: Update the instructions for ftrace-bisect.sh 2023-02-06 07:52:44 +01:00
security tomoyo: fix broken dependency on *.conf.default 2023-02-06 07:52:35 +01:00
sound ALSA: hda/via: Avoid potential array out-of-bound in add_secret_dac_path() 2023-02-22 12:50:23 +01:00
tools objtool: Add a missing comma to avoid string concatenation 2023-02-06 07:52:49 +01:00
usr initramfs: restore default compression behavior 2020-04-08 09:08:38 +02:00
virt KVM: arm64: vgic: Fix exit condition in scan_its_table() 2022-10-29 10:20:35 +02:00
.clang-format clang-format: Update with the latest for_each macro list 2019-08-31 10:00:51 +02:00
.cocciconfig
.get_maintainer.ignore
.gitattributes
.gitignore Modules updates for v5.4 2019-09-22 10:34:46 -07:00
.mailmap ARM: SoC fixes 2019-11-10 13:41:59 -08:00
COPYING
CREDITS MAINTAINERS: Remove Simon as Renesas SoC Co-Maintainer 2019-10-10 08:12:51 -07:00
Kbuild
Kconfig
MAINTAINERS net/phy/mdio-i2c: Move header file to include/linux/mdio 2023-02-06 07:52:46 +01:00
Makefile Linux 5.4.231 2023-02-06 07:52:51 +01:00
README

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.