Hi Ioana, I love your patch! Perhaps something to improve: [auto build test WARNING on net-next/master] [also build test WARNING on sparc-next/master linus/master v5.7-rc5 next-20200515] [if your patch is applied to the wrong git tree, please drop us a note to help improve the system. BTW, we also suggest to use '--base' option to specify the base tree in git format-patch, please see https://stackoverflow.com/a/37406982] url: https://github.com/0day-ci/linux/commits/Ioana-Ciornei/dpaa2-eth-add-supp... base: https://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next.git d00f26b623333f2419f4c3b95ff11c8b1bb96f56 reproduce: # apt-get install sparse # sparse version: v0.6.1-193-gb8fad4bc-dirty make ARCH=x86_64 allmodconfig make C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' If you fix the issue, kindly add following tag as appropriate Reported-by: kbuild test robot <lkp(a)intel.com&gt; sparse warnings: (new ones prefixed by >>) drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.c:2747:29: sparse: sparse: incorrect type in assignment (different base types) @@ expected unsigned short [usertype] @@ got resunsigned short [usertype] @@ drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.c:2747:29: sparse: expected unsigned short [usertype] drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.c:2747:29: sparse: got restricted __be16 [usertype] vim +2728 drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.c 2664 2665 /* Configure ingress classification based on VLAN PCP */ 2666 static int set_vlan_qos(struct dpaa2_eth_priv *priv) 2667 { 2668 struct device *dev = priv->net_dev->dev.parent; 2669 struct dpkg_profile_cfg kg_cfg = {0}; 2670 struct dpni_qos_tbl_cfg qos_cfg = {0}; 2671 struct dpni_rule_cfg key_params; 2672 void *dma_mem, *key; 2673 u8 key_size = 2; /* VLAN TCI field */ 2674 int i, pcp, err; 2675 u16 *mask; 2676 2677 /* VLAN-based classification only makes sense if we have multiple 2678 * traffic classes. 2679 * Also, we need to extract just the 3-bit PCP field from the VLAN 2680 * header and we can only do that by using a mask 2681 */ 2682 if (dpaa2_eth_tc_count(priv) == 1 || !dpaa2_eth_fs_mask_enabled(priv)) { 2683 dev_dbg(dev, "VLAN-based QoS classification not supported\n"); 2684 return -EOPNOTSUPP; 2685 } 2686 2687 dma_mem = kzalloc(DPAA2_CLASSIFIER_DMA_SIZE, GFP_KERNEL); 2688 if (!dma_mem) 2689 return -ENOMEM; 2690 2691 kg_cfg.num_extracts = 1; 2692 kg_cfg.extracts[0].type = DPKG_EXTRACT_FROM_HDR; 2693 kg_cfg.extracts[0].extract.from_hdr.prot = NET_PROT_VLAN; 2694 kg_cfg.extracts[0].extract.from_hdr.type = DPKG_FULL_FIELD; 2695 kg_cfg.extracts[0].extract.from_hdr.field = NH_FLD_VLAN_TCI; 2696 2697 err = dpni_prepare_key_cfg(&kg_cfg, dma_mem); 2698 if (err) { 2699 dev_err(dev, "dpni_prepare_key_cfg failed\n"); 2700 goto out_free_tbl; 2701 } 2702 2703 /* set QoS table */ 2704 qos_cfg.default_tc = 0; 2705 qos_cfg.discard_on_miss = 0; 2706 qos_cfg.key_cfg_iova = dma_map_single(dev, dma_mem, 2707 DPAA2_CLASSIFIER_DMA_SIZE, 2708 DMA_TO_DEVICE); 2709 if (dma_mapping_error(dev, qos_cfg.key_cfg_iova)) { 2710 dev_err(dev, "QoS table DMA mapping failed\n"); 2711 err = -ENOMEM; 2712 goto out_free_tbl; 2713 } 2714 2715 err = dpni_set_qos_table(priv->mc_io, 0, priv->mc_token, &qos_cfg); 2716 if (err) { 2717 dev_err(dev, "dpni_set_qos_table failed\n"); 2718 goto out_unmap_tbl; 2719 } 2720 2721 /* Add QoS table entries */ 2722 key = kzalloc(key_size * 2, GFP_KERNEL); 2723 if (!key) { 2724 err = -ENOMEM; 2725 goto out_unmap_tbl; 2726 } 2727 mask = key + key_size; 2729 2730 key_params.key_iova = dma_map_single(dev, key, key_size * 2, 2731 DMA_TO_DEVICE); 2732 if (dma_mapping_error(dev, key_params.key_iova)) { 2733 dev_err(dev, "Qos table entry DMA mapping failed\n"); 2734 err = -ENOMEM; 2735 goto out_free_key; 2736 } 2737 2738 key_params.mask_iova = key_params.key_iova + key_size; 2739 key_params.key_size = key_size; 2740 2741 /* We add rules for PCP-based distribution starting with highest 2742 * priority (VLAN PCP = 7). If this DPNI doesn't have enough traffic 2743 * classes to accommodate all priority levels, the lowest ones end up 2744 * on TC 0 which was configured as default 2745 */ 2746 for (i = dpaa2_eth_tc_count(priv) - 1, pcp = 7; i >= 0; i--, pcp--) { 2747 *(u16 *)key = cpu_to_be16(pcp << VLAN_PRIO_SHIFT); 2748 dma_sync_single_for_device(dev, key_params.key_iova, 2749 key_size * 2, DMA_TO_DEVICE); 2750 2751 err = dpni_add_qos_entry(priv->mc_io, 0, priv->mc_token, 2752 &key_params, i, i); 2753 if (err) { 2754 dev_err(dev, "dpni_add_qos_entry failed\n"); 2755 dpni_clear_qos_table(priv->mc_io, 0, priv->mc_token); 2756 goto out_unmap_key; 2757 } 2758 } 2759 2760 priv->vlan_cls_enabled = true; 2761 2762 /* Table and key memory is not persistent, clean everything up after 2763 * configuration is finished 2764 */ 2765 out_unmap_key: 2766 dma_unmap_single(dev, key_params.key_iova, key_size * 2, DMA_TO_DEVICE); 2767 out_free_key: 2768 kfree(key); 2769 out_unmap_tbl: 2770 dma_unmap_single(dev, qos_cfg.key_cfg_iova, DPAA2_CLASSIFIER_DMA_SIZE, 2771 DMA_TO_DEVICE); 2772 out_free_tbl: 2773 kfree(dma_mem); 2774 2775 return err; 2776 } 2777 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org