tree 4751dc03a194a3b8471d8e8a3af41762959d04ff
parent a4af1798d768ab2f12ab623e21ad68dc8c248005
author Krzysztof Helt <krzysztof.h1@wp.pl> 1216873867 -0700
committer Linus Torvalds <torvalds@linux-foundation.org> 1216921656 -0700

tridentfb: y-panning fixes

The Trident cards uses only 20-bit address of screen start in double
words.  This allows addressing for only 4MB of video memory so check this.

Also remove some redundant checks and assignments.

Signed-off-by: Krzysztof Helt <krzysztof.h1@wp.pl>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>