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Kuangyi Chiang e735e957f2 xhci: Don't perform Soft Retry for Etron xHCI host 
Since commit f8f80be501 ("xhci: Use soft retry to recover faster from
transaction errors"), unplugging USB device while enumeration results in
errors like this:

[ 364.855321] xhci_hcd 0000:0b:00.0: ERROR Transfer event for disabled endpoint slot 5 ep 2
[ 364.864622] xhci_hcd 0000:0b:00.0: @0000002167656d70 67f03000 00000021 0c000000 05038001
[ 374.934793] xhci_hcd 0000:0b:00.0: Abort failed to stop command ring: -110
[ 374.958793] xhci_hcd 0000:0b:00.0: xHCI host controller not responding, assume dead
[ 374.967590] xhci_hcd 0000:0b:00.0: HC died; cleaning up
[ 374.973984] xhci_hcd 0000:0b:00.0: Timeout while waiting for configure endpoint command

Seems that Etorn xHCI host can not perform Soft Retry correctly, apply
XHCI_NO_SOFT_RETRY quirk to disable Soft Retry and then issue is gone.

This patch depends on commit a4a251f8c2 ("usb: xhci: do not perform
Soft Retry for some xHCI hosts").

Fixes: f8f80be501 ("xhci: Use soft retry to recover faster from transaction errors")
Cc: stable@vger.kernel.org
Signed-off-by: Kuangyi Chiang <ki.chiang65@gmail.com>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Link: https://lore.kernel.org/r/20241106101459.775897-21-mathias.nyman@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
History 2024-11-06 13:26:15 +01:00
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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.