Thomas Zimmermann <tzimmermann@xxxxxxx> writes: > Initialize the instance of struct fb_ops with fbdev initializer > macros for framebuffers in DMA-able address space. This explictily > sets the read/write, draw and mmap callbacks to the correct default > implementation. Also select the necessary helpers in Kconfig. > > Fbdev drivers sometimes rely on the callbacks being NULL for a > default implementation to be invoked; hence requireing 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. > > Set the callbacks via macros. No functional changes. > > Signed-off-by: Thomas Zimmermann <tzimmermann@xxxxxxx> > --- Reviewed-by: Javier Martinez Canillas <javierm@xxxxxxxxxx> -- Best regards, Javier Martinez Canillas Core Platforms Red Hat
