drivers/video/ps3fb: fix memset size error

The size passed to memset is wrong.

Signed-off-by Li Zefan <lizf@cn.fujitsu.com>
Acked-by: Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/drivers/video/ps3fb.c b/drivers/video/ps3fb.c
index b3463dd..75836aa 100644
--- a/drivers/video/ps3fb.c
+++ b/drivers/video/ps3fb.c
@@ -727,7 +727,7 @@
 
 static int ps3fb_get_vblank(struct fb_vblank *vblank)
 {
-	memset(vblank, 0, sizeof(&vblank));
+	memset(vblank, 0, sizeof(*vblank));
 	vblank->flags = FB_VBLANK_HAVE_VSYNC;
 	return 0;
 }