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glink_ssr is used to signal a remote processor "A" about the stopping of another remote processor "B", so that in the event that remote processor B is ever booted again the fifos of the glink channel between A and B is in a known state. But if remote processor A receives this notification before B is actually stopped the newly reset fifo indices will be interpreted as there being "data" on the channel and either side of the channel will enter a fatal error handler. Move the glink_ssr notification to the "unprepare" state of the rproc_subdev to avoid this issue. This has the side effect of us not notifying the dying remote processor itself about its fate, which has been seen to block in certain resource constraint scenarios. Tested-by: Sibi Sankar <sibis@codeaurora.org> Reviewed-by: Sibi Sankar <sibis@codeaurora.org> Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.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.