Thomas Zimmermann <tzimmermann@xxxxxxx> writes: > Initialize the instance of struct fb_ops with fbdev initializer > macros for framebuffers in I/O address space. Set the read/write, > draw and mmap callbacks to the correct implementation and avoid > implicit defaults. Also select the necessary helpers in Kconfig. > > Fbdev drivers sometimes rely on the callbacks being NULL for a > default I/O-memory-based implementation to be invoked; hence > requiring the I/O helpers to be built in any case. Setting all > callbacks in all drivers explicitly will allow to make the I/O > helpers optional. This benefits systems that do not use these > functions. > > Signed-off-by: Thomas Zimmermann <tzimmermann@xxxxxxx> > Cc: Russell King <linux@xxxxxxxxxxxxxxx> > Cc: linux-arm-kernel@xxxxxxxxxxxxxxxxxxx > --- Reviewed-by: Javier Martinez Canillas <javierm@xxxxxxxxxx> -- Best regards, Javier Martinez Canillas Core Platforms Red Hat
