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d429976170
Unlike the other integral options supported by the MIDI gadget, index is a signed integer and defaults to -1, which means "choose any sound card index". The generic store routine parses input into a u32 which fails to properly read -1 if an attempt is made to set the value to the default. Add a new macro block for signed values to fix this, and use the correct format string for unsigned values. Signed-off-by: John Keeping <john@metanate.com> Link: https://lore.kernel.org/r/20211029134115.351008-1-john@metanate.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.