5253 kmem_alloc/kmem_zalloc won't fail with KM_SLEEP
5254 getrbuf won't fail with KM_SLEEP

@@ -567,15 +567,10 @@
         ring->physaddr = ring->txdesc_dma.cookie.dmac_address;
         bzero(ring->desc, count * sizeof (struct mwl_txdesc));
 
         datadlen = count * sizeof (struct mwl_txbuf);
         ring->buf = kmem_zalloc(datadlen, KM_SLEEP);
-        if (ring->buf == NULL) {
-                MWL_DBG(MWL_DBG_DMA, "mwl: mwl_alloc_tx_ring(): "
-                    "could not alloc tx ring data buffer\n");
-                return (DDI_FAILURE);
-        }
         bzero(ring->buf, count * sizeof (struct mwl_txbuf));
 
         for (i = 0; i < count; i++) {
                 ds = &ring->desc[i];
                 bf = &ring->buf[i];

@@ -2224,16 +2219,10 @@
 mwl_node_alloc(struct ieee80211com *ic)
 {
         struct mwl_node *mn;
 
         mn = kmem_zalloc(sizeof (struct mwl_node), KM_SLEEP);
-        if (mn == NULL) {
-                /* XXX stat+msg */
-                MWL_DBG(MWL_DBG_MSG, "mwl: mwl_node_alloc(): "
-                    "alloc node failed\n");
-                return (NULL);
-        }
         return (&mn->mn_node);
 }
 
 static void
 mwl_node_free(struct ieee80211_node *ni)