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commit 79989bd4ab86404743953fa382af0a22900050cf upstream. Usb device connect may not be detected after runtime resume if xHC is reset during resume. In runtime resume cases xhci_resume() will only resume roothubs if there are pending port events. If the xHC host is reset during runtime resume due to a Save/Restore Error (SRE) then these pending port events won't be detected as PORTSC change bits are not immediately set by host after reset. Unconditionally resume roothubs if xHC is reset during resume to ensure device connections are detected. Also return early with error code if starting xHC fails after reset. Issue was debugged and a similar solution suggested by Remi Pommarel. Using this instead as it simplifies future refactoring. Reported-by: Remi Pommarel <repk@triplefau.lt> Closes: https://bugzilla.kernel.org/show_bug.cgi?id=218987 Suggested-by: Remi Pommarel <repk@triplefau.lt> Tested-by: Remi Pommarel <repk@triplefau.lt> Cc: stable@vger.kernel.org Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com> Link: https://lore.kernel.org/r/20240627145523.1453155-2-mathias.nyman@linux.intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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.