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Prashanth K 1c06aff9b8 usb: gadget: u_serial: Avoid double unlock of serial_port_lock
Avoid unlocking serial_port_lock twice in gserial_suspend(), this can
occur if gserial_wakeup_host() fails. And since wakeup is performed
outside spinlock, check if the port is valid before proceeding again.

Fixes: 3baea29dc0 ("usb: gadget: u_serial: Implement remote wakeup capability")
Reported-by: Dan Carpenter <dan.carpenter@linaro.org>
Closes: https://lore.kernel.org/all/aBHatifO5bjR1yPt@stanley.mountain/
Signed-off-by: Prashanth K <prashanth.k@oss.qualcomm.com>
Link: https://lore.kernel.org/r/20250506104912.3750934-1-prashanth.k@oss.qualcomm.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
History 2025-05-21 13:10:07 +02:00
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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.