H_SYNC_OFFSET
mode->right_margin = H_SYNC_OFFSET;
(H_ACTIVE + H_SYNC_OFFSET + H_SYNC_WIDTH);
DPRINTK("%d %d %d %d ", H_ACTIVE, H_ACTIVE + H_SYNC_OFFSET,
H_ACTIVE + H_SYNC_OFFSET + H_SYNC_WIDTH, H_ACTIVE + H_BLANKING);
var->right_margin = H_SYNC_OFFSET;
(H_ACTIVE + H_SYNC_OFFSET + H_SYNC_WIDTH);