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

@@ -1677,20 +1677,12 @@
          * Use kmem_alloc instead of ddi_dma_mem_alloc here since the latter
          * may fail on x86 platform if a physically contiguous memory chunk
          * cannot be found. From initial testing, we did not see performance
          * degradation as seen on Sparc.
          */
-        if ((reqp->dr_ibuf_kaddr = kmem_alloc(size, KM_SLEEP)) == NULL) {
-                dca_error(dca, "unable to alloc request ibuf memory");
-                dca_destroyreq(reqp);
-                return (NULL);
-        }
-        if ((reqp->dr_obuf_kaddr = kmem_alloc(size, KM_SLEEP)) == NULL) {
-                dca_error(dca, "unable to alloc request obuf memory");
-                dca_destroyreq(reqp);
-                return (NULL);
-        }
+        reqp->dr_ibuf_kaddr = kmem_alloc(size, KM_SLEEP);
+        reqp->dr_obuf_kaddr = kmem_alloc(size, KM_SLEEP);
 #else
         /*
          * We could kmem_alloc for Sparc too. However, it gives worse
          * performance when transferring more than one page data. For example,
          * using 4 threads and 12032 byte data and 3DES on 900MHZ Sparc system,