From: Felipe Balbi <balbi@kernel.org>
To: Jerry Zhang <zhangjerry@google.com>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
linux-usb@vger.kernel.org
Cc: Michal Nazarewicz <mina86@mina86.com>,
Krzysztof Opasiak <kopasiak90@gmail.com>,
Badhri Jagan Sridharan <badhri@google.com>,
Andrzej Pietrasiewicz <andrzej.p@samsung.com>,
felixhaedicke@web.de
Subject: [V2,2/4] usb: gadget: configfs: Create control_config group
Date: Wed, 16 May 2018 09:13:52 +0300 [thread overview]
Message-ID: <87tvr886vz.fsf@linux.intel.com> (raw)
Jerry Zhang <zhangjerry@google.com> writes:
> Control_config is a group under gadget that acts
> as a normal config group, except it does not
> appear in cdev->configs.
>
> Functions that have exactly zero descriptors can
> be linked into control_config. These functions
> are bound and unbound with the rest of the gadget,
> but are never enabled. Also, functions with zero
> descriptors cannot be used in real configs.
>
> Create configfs_setup(), which will first attempt
> composite setup. If that fails, it will go through
> functions in control_config and use req_match to
> find and deliver the request to a function that can
> handle it.
>
> This allows the user to create a functionfs instance
> dedicated to handling non-standard control requests
> no matter what functions or configurations are
> currently active.
>
> Signed-off-by: Jerry Zhang <zhangjerry@google.com>
I didn't get patch 1
next reply other threads:[~2018-05-16 6:13 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-05-16 6:13 Felipe Balbi [this message]
-- strict thread matches above, loose matches on Subject: below --
2018-05-16 6:34 [V2,2/4] usb: gadget: configfs: Create control_config group Jerry Zhang
2018-04-24 21:29 Jerry Zhang
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