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cf51e4b9c3
I thought the read-back of the DMA_ENABLE register was unnecessary (at least it is working on my boards), then deleted it in commit586a2c5290("mtd: nand: denali: squash denali_enable_dma() helper into caller"). Sorry, I was wrong - it caused a timing issue on Cyclone5 SoCFPGAs. Revive the register read-back, commenting why this is necessary. Fixes:586a2c5290("mtd: nand: denali: squash denali_enable_dma() helper into caller") Cc: <stable@vger.kernel.org> Reported-by: Steffen Trumtrar <s.trumtrar@pengutronix.de> Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Reviewed-by: Miquel Raynal <miquel.raynal@bootlin.com> Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
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.