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[ Upstream commit 1b739388aa3f8dfb63a9fca777e6dfa6912d0464 ] Hang on to the control IDs instead of pointers since those are correctly handled with locks. Fixes:8fe9a03f43("usb: gadget: u_audio: Rate ctl notifies about current srate (0=stopped)") Fixes:c565ad07ef("usb: gadget: u_audio: Support multiple sampling rates") Fixes:02de698ca8("usb: gadget: u_audio: add bi-directional volume and mute support") Signed-off-by: Chris Wulff <chris.wulff@biamp.com> Link: https://lore.kernel.org/stable/CO1PR17MB5419C2BF44D400E4E620C1ADE1172%40CO1PR17MB5419.namprd17.prod.outlook.com Link: https://lore.kernel.org/r/CO1PR17MB5419C2BF44D400E4E620C1ADE1172@CO1PR17MB5419.namprd17.prod.outlook.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Sasha Levin <sashal@kernel.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.