This patch fixes a problem reported by David S. Miller <davem@redhat.com>

"I just noticed that fb_{read,write}() uses copy_*_user() with
 the kernel buffer being the frame buffer.  It needs to use
 the proper device address accessor functions."

The patch will do an intermediate copy of the contents to a page-sized,
kmalloc'ed buffer.
Signed-off-by: Antonino Daplas <adaplas@pol.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>