DRM_CRC_ENTRIES_NR
return CIRC_CNT(crc->head, crc->tail, DRM_CRC_ENTRIES_NR);
entries = kzalloc_objs(*entries, DRM_CRC_ENTRIES_NR);
BUILD_BUG_ON_NOT_POWER_OF_2(DRM_CRC_ENTRIES_NR);
crc->tail = (crc->tail + 1) & (DRM_CRC_ENTRIES_NR - 1);
if (CIRC_SPACE(head, tail, DRM_CRC_ENTRIES_NR) < 1) {
head = (head + 1) & (DRM_CRC_ENTRIES_NR - 1);