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When the DT property no-unaligned-direct-access is set, map->phys is set to NO_XIP. With this property set, the flash should not be exposed directly to MTD users, since it cannot be mapped. map_ram() exposes the flash direct access unconditionally which leads to access errors (when the bus width does not match the RAM width). Therefore do not set point and unpoint when NO_XIP is set. Signed-off-by: Shivamurthy Shastri <shivamurthy.shastri@linutronix.de> Reviewed-by: Benedikt Spranger <b.spranger@linutronix.de> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Link: https://lore.kernel.org/linux-mtd/20230919113320.16953-1-shivamurthy.shastri@linutronix.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.