Hi "Rafał, I love your patch! Perhaps something to improve: [auto build test WARNING on net-next/master] url: https://github.com/0day-ci/linux/commits/Rafa-Mi-ecki/dt-bindings-net-document-BCM4908-Ethernet-controller/20210206-055343 base: https://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next.git 6626a0266566c5aea16178c5e6cd7fc4db3f2f56 config: i386-randconfig-s001-20210205 (attached as .config) compiler: gcc-9 (Debian 9.3.0-15) 9.3.0 reproduce: # apt-get install sparse # sparse version: v0.6.3-215-g0fb77bb6-dirty # https://github.com/0day-ci/linux/commit/53a9af8e34620fcfd9a75ccc9c89862b5c96598d git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Rafa-Mi-ecki/dt-bindings-net-document-BCM4908-Ethernet-controller/20210206-055343 git checkout 53a9af8e34620fcfd9a75ccc9c89862b5c96598d # save the attached .config to linux build tree make W=1 C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' ARCH=i386 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot "sparse warnings: (new ones prefixed by >>)" >> drivers/net/ethernet/broadcom/bcm4908enet.c:274:23: sparse: sparse: incorrect type in assignment (different base types) @@ expected restricted __le32 [usertype] ctl @@ got unsigned int [assigned] [usertype] tmp @@ drivers/net/ethernet/broadcom/bcm4908enet.c:274:23: sparse: expected restricted __le32 [usertype] ctl drivers/net/ethernet/broadcom/bcm4908enet.c:274:23: sparse: got unsigned int [assigned] [usertype] tmp >> drivers/net/ethernet/broadcom/bcm4908enet.c:275:24: sparse: sparse: incorrect type in assignment (different base types) @@ expected restricted __le32 [usertype] addr @@ got unsigned int [usertype] dma_addr @@ drivers/net/ethernet/broadcom/bcm4908enet.c:275:24: sparse: expected restricted __le32 [usertype] addr drivers/net/ethernet/broadcom/bcm4908enet.c:275:24: sparse: got unsigned int [usertype] dma_addr >> drivers/net/ethernet/broadcom/bcm4908enet.c:485:29: sparse: sparse: restricted __le32 degrades to integer drivers/net/ethernet/broadcom/bcm4908enet.c:505:13: sparse: sparse: restricted __le32 degrades to integer >> drivers/net/ethernet/broadcom/bcm4908enet.c:525:24: sparse: sparse: incorrect type in assignment (different base types) @@ expected restricted __le32 [usertype] addr @@ got unsigned int [usertype] @@ drivers/net/ethernet/broadcom/bcm4908enet.c:525:24: sparse: expected restricted __le32 [usertype] addr drivers/net/ethernet/broadcom/bcm4908enet.c:525:24: sparse: got unsigned int [usertype] drivers/net/ethernet/broadcom/bcm4908enet.c:526:23: sparse: sparse: incorrect type in assignment (different base types) @@ expected restricted __le32 [usertype] ctl @@ got unsigned int [assigned] [usertype] tmp @@ drivers/net/ethernet/broadcom/bcm4908enet.c:526:23: sparse: expected restricted __le32 [usertype] ctl drivers/net/ethernet/broadcom/bcm4908enet.c:526:23: sparse: got unsigned int [assigned] [usertype] tmp drivers/net/ethernet/broadcom/bcm4908enet.c:551:29: sparse: sparse: restricted __le32 degrades to integer drivers/net/ethernet/broadcom/bcm4908enet.c:564:32: sparse: sparse: restricted __le32 degrades to integer drivers/net/ethernet/broadcom/bcm4908enet.c:567:30: sparse: sparse: restricted __le32 degrades to integer vim +274 drivers/net/ethernet/broadcom/bcm4908enet.c 246 247 static int bcm4908enet_dma_alloc_rx_buf(struct bcm4908enet *enet, unsigned int idx) 248 { 249 struct bcm4908enet_dma_ring_bd *buf_desc = &enet->rx_ring.buf_desc[idx]; 250 struct bcm4908enet_dma_ring_slot *slot = &enet->rx_ring.slots[idx]; 251 struct device *dev = enet->dev; 252 u32 tmp; 253 int err; 254 255 slot->len = ENET_MTU_MAX + ENET_MTU_MAX_EXTRA_SIZE; 256 257 slot->skb = netdev_alloc_skb(enet->netdev, slot->len); 258 if (!slot->skb) 259 return -ENOMEM; 260 261 slot->dma_addr = dma_map_single(dev, slot->skb->data, slot->len, DMA_FROM_DEVICE); 262 err = dma_mapping_error(dev, slot->dma_addr); 263 if (err) { 264 dev_err(dev, "Failed to map DMA buffer: %d\n", err); 265 kfree_skb(slot->skb); 266 slot->skb = NULL; 267 return err; 268 } 269 270 tmp = slot->len << DMA_CTL_LEN_DESC_BUFLENGTH_SHIFT; 271 tmp |= DMA_CTL_STATUS_OWN; 272 if (idx == enet->rx_ring.length - 1) 273 tmp |= DMA_CTL_STATUS_WRAP; > 274 buf_desc->ctl = tmp; > 275 buf_desc->addr = slot->dma_addr; 276 277 return 0; 278 } 279 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org