diff --git a/sys/dev/mpr/mpr.c b/sys/dev/mpr/mpr.c
index 863c9a59c27d..b202ea40db45 100644
--- a/sys/dev/mpr/mpr.c
+++ b/sys/dev/mpr/mpr.c
@@ -1529,10 +1529,6 @@ mpr_alloc_requests(struct mpr_softc *sc)
 	 */
 	sc->commands = malloc(sizeof(struct mpr_command) * sc->num_reqs,
 	    M_MPR, M_WAITOK | M_ZERO);
-	if (!sc->commands) {
-		mpr_dprint(sc, MPR_ERROR, "Cannot allocate command memory\n");
-		return (ENOMEM);
-	}
 	for (i = 1; i < sc->num_reqs; i++) {
 		cm = &sc->commands[i];
 		cm->cm_req = sc->req_frames + i * sc->reqframesz;
@@ -2684,11 +2680,6 @@ mpr_register_events(struct mpr_softc *sc, uint8_t *mask,
 	int error = 0;
 
 	eh = malloc(sizeof(struct mpr_event_handle), M_MPR, M_WAITOK|M_ZERO);
-	if (!eh) {
-		mpr_dprint(sc, MPR_EVENT|MPR_ERROR,
-		    "Cannot allocate event memory\n");
-		return (ENOMEM);
-	}
 	eh->callback = cb;
 	eh->data = data;
 	TAILQ_INSERT_TAIL(&sc->event_list, eh, eh_list);
diff --git a/sys/dev/mpr/mpr_sas.c b/sys/dev/mpr/mpr_sas.c
index 64eed15ea5a6..0e31f0c4d21e 100644
--- a/sys/dev/mpr/mpr_sas.c
+++ b/sys/dev/mpr/mpr_sas.c
@@ -736,11 +736,6 @@ mpr_attach_sas(struct mpr_softc *sc)
 	mpr_dprint(sc, MPR_INIT, "%s entered\n", __func__);
 
 	sassc = malloc(sizeof(struct mprsas_softc), M_MPR, M_WAITOK|M_ZERO);
-	if (!sassc) {
-		mpr_dprint(sc, MPR_INIT|MPR_ERROR,
-		    "Cannot allocate SAS subsystem memory\n");
-		return (ENOMEM);
-	}
 
 	/*
 	 * XXX MaxTargets could change during a reinit.  Since we don't
@@ -751,12 +746,6 @@ mpr_attach_sas(struct mpr_softc *sc)
 	sassc->maxtargets = sc->facts->MaxTargets + sc->facts->MaxVolumes;
 	sassc->targets = malloc(sizeof(struct mprsas_target) *
 	    sassc->maxtargets, M_MPR, M_WAITOK|M_ZERO);
-	if (!sassc->targets) {
-		mpr_dprint(sc, MPR_INIT|MPR_ERROR,
-		    "Cannot allocate SAS target memory\n");
-		free(sassc, M_MPR);
-		return (ENOMEM);
-	}
 	sc->sassc = sassc;
 	sassc->sc = sc;
 
@@ -3556,8 +3545,4 @@ mprsas_realloc_targets(struct mpr_softc *sc, int maxtargets)
 
 	sassc->targets = malloc(sizeof(struct mprsas_target) * maxtargets,
 	    M_MPR, M_WAITOK|M_ZERO);
-	if (!sassc->targets) {
-		panic("%s failed to alloc targets with error %d\n",
-		    __func__, ENOMEM);
-	}
 }
diff --git a/sys/dev/mpr/mpr_user.c b/sys/dev/mpr/mpr_user.c
index 308b559c7172..751741bcc4f6 100644
--- a/sys/dev/mpr/mpr_user.c
+++ b/sys/dev/mpr/mpr_user.c
@@ -1528,13 +1528,6 @@ mpr_diag_register(struct mpr_softc *sc, mpr_fw_diag_register_t *diag_register,
 	bzero(sc->fw_diag_buffer, buffer_size);
 
 	ctx = malloc(sizeof(*ctx), M_MPR, M_WAITOK | M_ZERO);
-	if (ctx == NULL) {
-		device_printf(sc->mpr_dev, "%s: context malloc failed\n",
-		    __func__);
-		*return_code = MPR_FW_DIAG_ERROR_NO_BUFFER;
-		status = MPR_DIAG_FAILURE;
-		goto bailout;
-	}
 	ctx->addr = &sc->fw_diag_busaddr;
 	ctx->buffer_dmat = sc->fw_diag_dmat;
 	ctx->buffer_dmamap = sc->fw_diag_map;
diff --git a/sys/dev/mps/mps.c b/sys/dev/mps/mps.c
index 9802296f06f8..1adbf58c9e17 100644
--- a/sys/dev/mps/mps.c
+++ b/sys/dev/mps/mps.c
@@ -1520,10 +1520,6 @@ mps_alloc_requests(struct mps_softc *sc)
 	 */
 	sc->commands = malloc(sizeof(struct mps_command) * sc->num_reqs,
 	    M_MPT2, M_WAITOK | M_ZERO);
-	if(!sc->commands) {
-		mps_dprint(sc, MPS_ERROR, "Cannot allocate command memory\n");
-		return (ENOMEM);
-	}
 	for (i = 1; i < sc->num_reqs; i++) {
 		cm = &sc->commands[i];
 		cm->cm_req = sc->req_frames + i * sc->reqframesz;
@@ -2598,10 +2594,6 @@ mps_register_events(struct mps_softc *sc, u32 *mask,
 	int error = 0;
 
 	eh = malloc(sizeof(struct mps_event_handle), M_MPT2, M_WAITOK|M_ZERO);
-	if(!eh) {
-		mps_dprint(sc, MPS_ERROR, "Cannot allocate event memory\n");
-		return (ENOMEM);
-	}
 	eh->callback = cb;
 	eh->data = data;
 	TAILQ_INSERT_TAIL(&sc->event_list, eh, eh_list);
diff --git a/sys/dev/mps/mps_sas.c b/sys/dev/mps/mps_sas.c
index fd3f47c63697..74fced8abfab 100644
--- a/sys/dev/mps/mps_sas.c
+++ b/sys/dev/mps/mps_sas.c
@@ -722,11 +722,6 @@ mps_attach_sas(struct mps_softc *sc)
 	mps_dprint(sc, MPS_INIT, "%s entered\n", __func__);
 
 	sassc = malloc(sizeof(struct mpssas_softc), M_MPT2, M_WAITOK|M_ZERO);
-	if(!sassc) {
-		mps_dprint(sc, MPS_INIT|MPS_ERROR,
-		    "Cannot allocate SAS controller memory\n");
-		return (ENOMEM);
-	}
 
 	/*
 	 * XXX MaxTargets could change during a reinit.  Since we don't
@@ -737,12 +732,6 @@ mps_attach_sas(struct mps_softc *sc)
 	sassc->maxtargets = sc->facts->MaxTargets + sc->facts->MaxVolumes;
 	sassc->targets = malloc(sizeof(struct mpssas_target) *
 	    sassc->maxtargets, M_MPT2, M_WAITOK|M_ZERO);
-	if(!sassc->targets) {
-		mps_dprint(sc, MPS_INIT|MPS_ERROR,
-		    "Cannot allocate SAS target memory\n");
-		free(sassc, M_MPT2);
-		return (ENOMEM);
-	}
 	sc->sassc = sassc;
 	sassc->sc = sc;
 
@@ -3421,8 +3410,4 @@ mpssas_realloc_targets(struct mps_softc *sc, int maxtargets)
 
 	sassc->targets = malloc(sizeof(struct mpssas_target) * maxtargets,
 	    M_MPT2, M_WAITOK|M_ZERO);
-	if (!sassc->targets) {
-		panic("%s failed to alloc targets with error %d\n",
-		    __func__, ENOMEM);
-	}
 }
diff --git a/sys/dev/mps/mps_user.c b/sys/dev/mps/mps_user.c
index 0a2506070849..15ae463a1ad1 100644
--- a/sys/dev/mps/mps_user.c
+++ b/sys/dev/mps/mps_user.c
@@ -1436,13 +1436,6 @@ mps_diag_register(struct mps_softc *sc, mps_fw_diag_register_t *diag_register,
         bzero(sc->fw_diag_buffer, buffer_size);
 
 	ctx = malloc(sizeof(*ctx), M_MPSUSER, M_WAITOK | M_ZERO);
-	if (ctx == NULL) {
-		device_printf(sc->mps_dev, "%s: context malloc failed\n",
-		    __func__);
-		*return_code = MPS_FW_DIAG_ERROR_NO_BUFFER;
-		status = MPS_DIAG_FAILURE;
-		goto bailout;
-	}
 	ctx->addr = &sc->fw_diag_busaddr;
 	ctx->buffer_dmat = sc->fw_diag_dmat;
 	ctx->buffer_dmamap = sc->fw_diag_map;