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Since there are multiple IPCs being sent in a short span of time, there is a possibility of more than one message being on the Rx list after receiving response from firmware. In such cases, when the first notification of interrupt from firmware is received, driver retrieves the message from the Rx list but does not delete it from the list till the next lock. In the meantime, when another interrupt is received from the firmware, driver is reading the previous message again since the previous message has not been removed from the list. Signed-off-by: Gustaw Lewandowski <gustaw.lewandowski@intel.com> Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Signed-off-by: Mark Brown <broonie@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.