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

@@ -739,17 +739,12 @@
                         return (EFAULT);
                 head = STRUCT_FGET(adh, head);
                 if (head < 0 || head >= dadkp->dad_phyg.g_head)
                         return (ENXIO);
                 secbuf = kmem_zalloc(NBPSCTR, KM_SLEEP);
-                if (!secbuf)
-                        return (ENOMEM);
+
                 bp = getrbuf(KM_SLEEP);
-                if (!bp) {
-                        kmem_free(secbuf, NBPSCTR);
-                        return (ENOMEM);
-                }
 
                 bp->b_edev = dev;
                 bp->b_dev  = cmpdev(dev);
                 bp->b_flags = B_BUSY;
                 bp->b_resid = 0;

@@ -1689,13 +1684,11 @@
 {
         struct buf *bp;
         int err;
         struct cmpkt *pktp;
 
-        if ((bp = getrbuf(KM_SLEEP)) == NULL) {
-                return (ENOMEM);
-        }
+        bp = getrbuf(KM_SLEEP);
         pktp = dadk_pktprep(dadkp, NULL, bp, dadk_rmb_iodone, NULL, NULL);
         if (!pktp) {
                 freerbuf(bp);
                 return (ENOMEM);
         }