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2d0c87d34d
commite4befc121dupstream. When copy_from_user() returns an error code, there is a runtime PM usage counter imbalance. Fix this by moving copy_from_user() to the beginning of this function. Fixes:7b6c1b4c0e("usb: musb: fix runtime PM in debugfs") Signed-off-by: Dinghao Liu <dinghao.liu@zju.edu.cn> Cc: stable@vger.kernel.org Signed-off-by: Bin Liu <b-liu@ti.com> Link: https://lore.kernel.org/r/20200525025049.3400-7-b-liu@ti.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 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.