DART_MAX_STREAMS
if (dart->num_streams > DART_MAX_STREAMS) {
dart->num_streams, DART_MAX_STREAMS);
struct iommu_group *sid2group[DART_MAX_STREAMS];
u32 save_tcr[DART_MAX_STREAMS];
u32 save_ttbr[DART_MAX_STREAMS][DART_MAX_TTBR];
DECLARE_BITMAP(sidmap, DART_MAX_STREAMS);
atomic_long_t sidmap[BITS_TO_LONGS(DART_MAX_STREAMS)];
bitmap_zero(stream_map.sidmap, DART_MAX_STREAMS);