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af2eec7502
The response slave port can be disabled in some configuration [1] and csr + MSGDMA_CSR_RESP_FILL_LEVEL will be 0 even if transfer has suceeded. We have to only rely on the interrupts in that scenario. This was tested on cyclone V with the controller resp port disabled. [1] https://www.intel.com/content/www/us/en/programmable/documentation/sfo1400787952932.html 30.3.1.2 30.3.1.3 30.5.5 Fixes: https://forum.rocketboards.org/t/ip-msgdma-linux-driver/1919 Signed-off-by: Olivier Dautricourt <olivier.dautricourt@orolia.com> Reviewed-by: Stefan Roese <sr@denx.de> Link: https://lore.kernel.org/r/8220756f2191ca08cb21702252d1f2d4f753a7f5.1623898678.git.olivier.dautricourt@orolia.com Signed-off-by: Vinod Koul <vkoul@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.