L2 mask was assuming FS units contain valid information, but they do not. The new code checks if the L2 is FS before reading the L2/ROP mask Bug 2040328 Change-Id: Id07cc630e65cfc71ab8084a3700d884b6cd3430f Signed-off-by: David Nieto <dmartineznie@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/1627327 Reviewed-by: Thomas Fleury <tfleury@nvidia.com> Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com> Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com> Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>