Index: head/sys/dev/sfxge/common/ef10_ev.c
===================================================================
--- head/sys/dev/sfxge/common/ef10_ev.c
+++ head/sys/dev/sfxge/common/ef10_ev.c
@@ -466,7 +466,7 @@
 	__in		efx_nic_t *enp,
 	__in		unsigned int index,
 	__in		efsys_mem_t *esmp,
-	__in		size_t n,
+	__in		size_t ndescs,
 	__in		uint32_t id,
 	__in		uint32_t us,
 	__in		uint32_t flags,
@@ -480,7 +480,8 @@
 	EFX_STATIC_ASSERT(ISP2(EFX_EVQ_MAXNEVS));
 	EFX_STATIC_ASSERT(ISP2(EFX_EVQ_MINNEVS));
 
-	if (!ISP2(n) || (n < EFX_EVQ_MINNEVS) || (n > EFX_EVQ_MAXNEVS)) {
+	if (!ISP2(ndescs) ||
+	    (ndescs < EFX_EVQ_MINNEVS) || (ndescs > EFX_EVQ_MAXNEVS)) {
 		rc = EINVAL;
 		goto fail1;
 	}
@@ -529,7 +530,8 @@
 		 * it will choose the best settings for low latency, otherwise
 		 * it will choose the best settings for throughput.
 		 */
-		rc = efx_mcdi_init_evq_v2(enp, index, esmp, n, irq, us, flags);
+		rc = efx_mcdi_init_evq_v2(enp, index, esmp, ndescs, irq, us,
+		    flags);
 		if (rc != 0)
 			goto fail4;
 	} else {
@@ -545,7 +547,7 @@
 		 * to choose it.)
 		 */
 		boolean_t low_latency = encp->enc_datapath_cap_evb ? 0 : 1;
-		rc = efx_mcdi_init_evq(enp, index, esmp, n, irq, us, flags,
+		rc = efx_mcdi_init_evq(enp, index, esmp, ndescs, irq, us, flags,
 		    low_latency);
 		if (rc != 0)
 			goto fail5;
Index: head/sys/dev/sfxge/common/ef10_impl.h
===================================================================
--- head/sys/dev/sfxge/common/ef10_impl.h
+++ head/sys/dev/sfxge/common/ef10_impl.h
@@ -82,7 +82,7 @@
 	__in		efx_nic_t *enp,
 	__in		unsigned int index,
 	__in		efsys_mem_t *esmp,
-	__in		size_t n,
+	__in		size_t ndescs,
 	__in		uint32_t id,
 	__in		uint32_t us,
 	__in		uint32_t flags,
Index: head/sys/dev/sfxge/common/efx.h
===================================================================
--- head/sys/dev/sfxge/common/efx.h
+++ head/sys/dev/sfxge/common/efx.h
@@ -1638,7 +1638,7 @@
 	__in		efx_nic_t *enp,
 	__in		unsigned int index,
 	__in		efsys_mem_t *esmp,
-	__in		size_t n,
+	__in		size_t ndescs,
 	__in		uint32_t id,
 	__in		uint32_t us,
 	__in		uint32_t flags,
Index: head/sys/dev/sfxge/common/efx_ev.c
===================================================================
--- head/sys/dev/sfxge/common/efx_ev.c
+++ head/sys/dev/sfxge/common/efx_ev.c
@@ -70,7 +70,7 @@
 	__in		efx_nic_t *enp,
 	__in		unsigned int index,
 	__in		efsys_mem_t *esmp,
-	__in		size_t n,
+	__in		size_t ndescs,
 	__in		uint32_t id,
 	__in		uint32_t us,
 	__in		uint32_t flags,
@@ -221,7 +221,7 @@
 	__in		efx_nic_t *enp,
 	__in		unsigned int index,
 	__in		efsys_mem_t *esmp,
-	__in		size_t n,
+	__in		size_t ndescs,
 	__in		uint32_t id,
 	__in		uint32_t us,
 	__in		uint32_t flags,
@@ -261,7 +261,7 @@
 	eep->ee_magic = EFX_EVQ_MAGIC;
 	eep->ee_enp = enp;
 	eep->ee_index = index;
-	eep->ee_mask = n - 1;
+	eep->ee_mask = ndescs - 1;
 	eep->ee_flags = flags;
 	eep->ee_esmp = esmp;
 
@@ -276,7 +276,7 @@
 	enp->en_ev_qcount++;
 	*eepp = eep;
 
-	if ((rc = eevop->eevo_qcreate(enp, index, esmp, n, id, us, flags,
+	if ((rc = eevop->eevo_qcreate(enp, index, esmp, ndescs, id, us, flags,
 	    eep)) != 0)
 		goto fail4;
 
@@ -1286,7 +1286,7 @@
 	__in		efx_nic_t *enp,
 	__in		unsigned int index,
 	__in		efsys_mem_t *esmp,
-	__in		size_t n,
+	__in		size_t ndescs,
 	__in		uint32_t id,
 	__in		uint32_t us,
 	__in		uint32_t flags,
@@ -1303,7 +1303,8 @@
 	EFX_STATIC_ASSERT(ISP2(EFX_EVQ_MAXNEVS));
 	EFX_STATIC_ASSERT(ISP2(EFX_EVQ_MINNEVS));
 
-	if (!ISP2(n) || (n < EFX_EVQ_MINNEVS) || (n > EFX_EVQ_MAXNEVS)) {
+	if (!ISP2(ndescs) ||
+	    (ndescs < EFX_EVQ_MINNEVS) || (ndescs > EFX_EVQ_MAXNEVS)) {
 		rc = EINVAL;
 		goto fail1;
 	}
@@ -1320,7 +1321,7 @@
 #endif
 	for (size = 0; (1 << size) <= (EFX_EVQ_MAXNEVS / EFX_EVQ_MINNEVS);
 	    size++)
-		if ((1 << size) == (int)(n / EFX_EVQ_MINNEVS))
+		if ((1 << size) == (int)(ndescs / EFX_EVQ_MINNEVS))
 			break;
 	if (id + (1 << size) >= encp->enc_buftbl_limit) {
 		rc = EINVAL;