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| Filename | Latest commit message | Latest commit date |
|---|---|---|
6e65b88e7d
There is possible race between pull up disable vs ep_queue() API. Pull up disable sends END transfer command to per endpoint, and give back started request and pending request back to function driver. dwc3_gadget_giveback() API does release spinlock which may allow ep_queue() or completion handling to queue next request. This results into TRB pending without invoking end transfer command, whereas request is being given back to function driver and being freed. Hence on setting next pull up enable, USB controller accesses previous stale TRB causing unmapped page fault. Fix this issue by checking pull up disable or not while handling ep_queue(). Change-Id: I391aed05cbfe183cd3e2fe2f1aa335e4fd9ec37c Signed-off-by: Mayank Rana <mrana@codeaurora.org> Signed-off-by: Hemant Kumar <hemantk@codeaurora.org> Signed-off-by: Jack Pham <jackp@codeaurora.org> |
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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.