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Mathias Nyman d77efd7b3d xhci: fix stale flag preventig URBs after link state error is cleared 
commit b69dfcab68 upstream.

A usb device caught behind a link in ss.Inactive error state needs to
be reset to recover. A VDEV_PORT_ERROR flag is used to track this state,
preventing new transfers from being queued until error is cleared.

This flag may be left uncleared if link goes to error state between two
resets, and print the following message:

"xhci_hcd 0000:00:14.0: Can't queue urb, port error, link inactive"

Fix setting and clearing the flag.

The flag is cleared after hub driver has successfully reset the device
when hcd->reset_device is called. xhci-hcd issues an internal "reset
device" command in this callback, and clear all flags once the command
completes successfully.

This command may complete with a context state error if slot was recently
reset and is already in the defauilt state. This is treated as a success
but flag was left uncleared.

The link state field is also unreliable if port is currently in reset,
so don't set the flag in active reset cases.
Also clear the flag immediately when link is no longer in ss.Inactive
state and port event handler detects a completed reset.

This issue was discovered while debugging kernel bugzilla issue 220491.
It is likely one small part of the problem, causing some of the failures,
but root cause remains unknown

Link: https://bugzilla.kernel.org/show_bug.cgi?id=220491
Fixes: b8c3b71808 ("usb: xhci: Don't try to recover an endpoint if port is in error state.")
Cc: stable@vger.kernel.org
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Link: https://patch.msgid.link/20251107162819.1362579-2-mathias.nyman@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
History 2025-12-07 06:25:01 +09:00
arch ARM: dts: nxp: imx6ul: correct SAI3 interrupt line 2025-12-07 06:24:59 +09:00
block blk-crypto: use BLK_STS_INVAL for alignment errors 2025-12-01 11:43:36 +01:00
certs sign-file,extract-cert: use pkcs11 provider for OPENSSL MAJOR >= 3 2024-09-20 19:52:48 +03:00
crypto
Documentation
drivers
fs
include
init
io_uring
ipc ipc: fix to protect IPCS lookups using RCU 2025-06-27 11:11:22 +01:00
kernel
lib
LICENSES LICENSES: add 0BSD license text 2024-09-01 20:43:24 -07:00
mm mm/memfd: fix information leak in hugetlb folios 2025-12-07 06:25:00 +09:00
net mptcp: Initialise rcv_mss before calling tcp_send_active_reset() in mptcp_do_fastclose(). 2025-12-07 06:25:00 +09:00
rust rust: kbuild: workaround rustdoc doctests modifier bug 2025-11-24 10:36:07 +01:00
samples ftrace/samples: Fix function size computation 2025-09-19 16:35:44 +02:00
scripts
security
sound
tools
usr
virt
.clang-format clang-format: Update with v6.11-rc1's for_each macro list 2024-08-02 13:20:31 +02:00
.clippy.toml
.cocciconfig
.editorconfig
.get_maintainer.ignore
.gitattributes
.gitignore
.mailmap mailmap: add entry for Thorsten Blum 2024-11-07 14:14:59 -08:00
.rustfmt.toml
COPYING COPYING: state that all contributions really are covered by this file 2020-02-10 13:32:20 -08:00
CREDITS
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 6.12.60 2025-12-01 11:43:41 +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.