port ASK kernel patchset to 6.18 application state

patches/ask/0001-cdx-adapt-dpa-wifi-a050385-to-6.18.patch

@@ -0,0 +1,76 @@
+--- a/cdx/dpa_wifi.c	2026-05-08 15:39:41.418608108 +0000
++++ b/cdx/dpa_wifi.c	2026-05-08 15:39:41.434536563 +0000
+@@ -840,17 +840,15 @@
+ 	/* Get a page frag to store the SGTable, or a full page if the errata
+ 	 * is in place and we need to avoid crossing a 4k boundary.
+ 	 */
+-#ifdef FM_ERRATUM_A050385
+ 	if (unlikely(fm_has_errata_a050385())) {
+ 		struct page *new_page = alloc_page(GFP_ATOMIC);
+ 
+ 		if (unlikely(!new_page))
+ 			return -ENOMEM;
+ 		sgt_buf = page_address(new_page);
+-	}
+-	else
+-#endif
++	} else {
+ 		sgt_buf = netdev_alloc_frag(priv->eth_priv->tx_headroom + sgt_size);
++	}
+ 
+ 	if (unlikely(!sgt_buf)) {
+ 		dev_err(dpa_bp->dev, "netdev_alloc_frag() failed\n");
+@@ -1082,11 +1080,7 @@
+ 		/* We do not support Jumbo frames on LS1043 and thus we edit
+ 		 * the skb truesize only when the 4k errata is not present.
+ 		 */
+-#ifdef FM_ERRATUM_A050385
+ 		if (likely(!fm_has_errata_a050385())) {
+-#else
+-		if (likely(!dpaa_errata_a010022)) {
+-#endif
+ 			skb->truesize = SKB_TRUESIZE(dpa_fd_length(fd));
+ 		}
+ 	}
+@@ -1152,11 +1146,8 @@
+ 	err = custom_vwd_skb_to_sg_fd(priv, skb, &fd);
+ 	INCR_PER_CPU_STAT(vap_dev->vap_stats, pkts_tx_sg);
+ #else
+-#ifdef FM_ERRATUM_A050385
+ 	if (unlikely(fm_has_errata_a050385()) && a050385_check_skb(skb, priv->eth_priv))
+ 		skb_need_wa = true;
+-#endif
+-
+ 
+ 	nonlinear = skb_is_nonlinear(skb);
+ 
+@@ -1217,7 +1208,6 @@
+ 			 * more fragments than we support. In this case,
+ 			 * we have no choice but to linearize it ourselves.
+ 			 */
+-#ifdef FM_ERRATUM_A050385
+ 			/* No point in linearizing the skb now if we are going
+ 			 * to realign and linearize it again further down due
+ 			 * to the A050385 errata
+@@ -1226,13 +1216,11 @@
+ 				skb_need_wa = true;
+ 			else
+ 				err = __skb_linearize(skb);
+-#endif
+ 		}
+ 		if (unlikely(!skb || err < 0))
+ 			/* Common out-of-memory error path */
+ 			goto skb_to_fd_failed;
+ 
+-#ifdef FM_ERRATUM_A050385
+ 		/* Verify the skb a second time if it has been updated since
+ 		 * the previous check
+ 		 */
+@@ -1248,7 +1236,6 @@
+ 			dev_kfree_skb(skb);
+ 			skb = nskb;
+ 		}
+-#endif
+ 
+ 		err = vwd_skb_to_contig_fd(priv, skb, &fd, &offset);
+ 	}