EFX_INTR_SIZE
if ((esmp == NULL) || (EFSYS_MEM_SIZE(esmp) < EFX_INTR_SIZE)) {
(void)memset(esmp->esm_base, 0, EFX_INTR_SIZE);
if ((rc = sfxge_dma_alloc(sc, EFX_INTR_SIZE, esmp)) != 0)