Thomas Zimmermann [off-list ref] writes:

Implement the driver's fops with the generator macros for deferred
I/O. Only requires per-driver code for the on-scren scanout buffer.
The generated helpers implement reading, writing and drawing on top
of that. Also update the selected Kconfig tokens accordingly.

Actual support for deferred I/O is missing from the driver. So
writing to memory-mapped pages does not automatically update the
scanout buffer.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Cc: Jaya Kumar <jayalk@intworks.biz>
---
 drivers/video/fbdev/Kconfig |   5 +-
 drivers/video/fbdev/arcfb.c | 113 +++++++++---------------------------
 2 files changed, 27 insertions(+), 91 deletions(-)

The patch looks good to me from a high level point of view but it's not
trivial so it would be good if Jaya Kumar can review / test it as well.

Acked-by: Javier Martinez Canillas <javierm@redhat.com>

-- 
Best regards,

Javier Martinez Canillas
Core Platforms
Red Hat