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ca2d5e4f59
When I test the uac gadget function, I find that the uac gadget out transfer may stop expectedly and the alsa buffer will be empty which results to input/output error. In some cases, we will get an endpoint event DWC3_DEPEVT_XFERINPROGRESS and the event status is DEPEVT_STATUS_MISSED_ISOC, and the original code try to issue an EndTransfer command. After the EndTransfer is completed, we will get a XferNotReady event. However, it will fail to giveback the req to the udc gadget driver due to an additional request unmap operation. To fix this problem, this patch return directly in kick transfer if there are isochronous endpoints and retry to transfer next time. Signed-off-by: Ren Jianing <jianing.ren@rock-chips.com> Change-Id: I80a8e7c0caa9129e5736bbf89909662c2f3ed4fe
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.
See Documentation/00-INDEX for a list of what is contained in each file.
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.