modedb: fix incorrect sync and vmode flags for CVT modes

The temporary structure for calculated CVT mode is not initialized.  Few
fields have only bits or-ed or and-ed so they may be left in incorrect
(random) state.

Testing of the tridentfb seems like a good exercise for the fbdev layer.

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>

1 files changed, 1 insertions, 0 deletions

diff --git a/drivers/video/modedb.c b/drivers/video/modedb.c
index 473562191586..d1bbef930dfa 100644
--- a/drivers/video/modedb.c
+++ b/drivers/video/modedb.c
@@ -590,6 +590,7 @@ done:
                     "", (margins) ? " with margins" : "", (interlace) ?
                     " interlaced" : "");
 
+            memset(&cvt_mode, 0, sizeof(cvt_mode));
             cvt_mode.xres = xres;
             cvt_mode.yres = yres;
             cvt_mode.refresh = (refresh) ? refresh : 60;