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On SD 2.00 cards we get lots of these messages: "mmc0: Got data interrupt 0x00000002 even though no data operation was in progress" By applying the SDHCI_QUIRK2_STOP_WITH_TC quirk, the messages no longer happen. A single card claiming to be SD 3.00 compliant also generates the interrupts, but since the card's manfacturing date is 2002 mar, it's unlikely to really be SD 3.00. This card is a 8GB SanDisk 'SU08G' 8.0 (SDHC class 4). This has been reported on Xilinx devices that also use the Arasan IP. See https://patchwork.kernel.org/patch/8062871/ This has been tested on the Renesas RZ/ND-DB board with the RZ/N1 SoC. The Arasan IP in this device is version 1.39a and uses a max SD clock of 50MHz and does not support DDR modes. Signed-off-by: Phil Edworthy <phil.edworthy@renesas.com> Acked-by: Adrian Hunter <adrian.hunter@intel.com> Signed-off-by: Ulf Hansson <ulf.hansson@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.
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.