5b3a23a3cc
At least on i.MX5x, the DMA events for I2C and SDHC use the same channel and there can only be a single user. So in this case there should be no message emitted that looks like an error if the I2C device doesn't have an assigned DMA channel. In contrast real problems that were only emitted at debug level before should be described at a higher level to be better visible and so understandable. Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de> Acked-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
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.