Re: [PATCH v2 01/19] fbdev: Prepare generic architecture helpers

On Thu, Apr 6, 2023, at 16:30, Thomas Zimmermann wrote:

Generic implementations of fb_pgprotect() and fb_is_primary_device()
have been in the source code for a long time. Prepare the header file
to make use of them.

Improve the code by using an inline function for fb_pgprotect()
and by removing include statements. The default mode set by
fb_pgprotect() is now writecombine, which is what most platforms
want.

Symbols are protected by preprocessor guards. Architectures that
provide a symbol need to define a preprocessor token of the same
name and value. Otherwise the header file will provide a generic
implementation. This pattern has been taken from <asm/io.h>.

v2:
	*  use writecombine mappings by default (Arnd)

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>

Acked-by: Arnd Bergmann <arnd@arndb.de>