[openeuler:OLK-5.10 6350/30000] drivers/net/ethernet/huawei/bma/edma_drv/bma_pci.c:259:14: sparse: sparse: cast removes address space '__iomem' of expression - Kernel

13 Apr 2024


      tree:   https://gitee.com/openeuler/kernel.git OLK-5.10
head:   535e6a2cffc7554a053cb090ae614da2579bccb4
commit: 915ded04f7e236f1dc52aad0430c8814bd32c793 [6350/30000] Huawei BMA: Adding Huawei BMA driver: host_edma_drv
config: x86_64-randconfig-122-20240413 (https://download.01.org/0day-ci/archive/20240413/202404131639.HIQDnB2q-lkp@i...)
compiler: clang version 17.0.6 (https://github.com/llvm/llvm-project 6009708b4367171ccdbf4b5905cb6a803753fe18)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240413/202404131639.HIQDnB2q-lkp@i...)
If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot lkp@intel.com
| Closes: https://lore.kernel.org/oe-kbuild-all/202404131639.HIQDnB2q-lkp@intel.com/
sparse warnings: (new ones prefixed by >>)
   drivers/net/ethernet/huawei/bma/edma_drv/bma_pci.c:450:17: sparse: sparse: Using plain integer as NULL pointer
   drivers/net/ethernet/huawei/bma/edma_drv/bma_pci.c:460:9: sparse: sparse: Using plain integer as NULL pointer
   drivers/net/ethernet/huawei/bma/edma_drv/bma_pci.c:461:9: sparse: sparse: Using plain integer as NULL pointer
   drivers/net/ethernet/huawei/bma/edma_drv/bma_pci.c:67:5: sparse: sparse: symbol 'edma_param_get_statics' was not declared. Should it be static?
   drivers/net/ethernet/huawei/bma/edma_drv/bma_pci.c:103:17: sparse: sparse: Using plain integer as NULL pointer
   drivers/net/ethernet/huawei/bma/edma_drv/bma_pci.c:114:17: sparse: sparse: Using plain integer as NULL pointer
   drivers/net/ethernet/huawei/bma/edma_drv/bma_pci.c:125:17: sparse: sparse: Using plain integer as NULL pointer
   drivers/net/ethernet/huawei/bma/edma_drv/bma_pci.c:185:9: sparse: sparse: Using plain integer as NULL pointer
   drivers/net/ethernet/huawei/bma/edma_drv/bma_pci.c:192:17: sparse: sparse: Using plain integer as NULL pointer
   drivers/net/ethernet/huawei/bma/edma_drv/bma_pci.c:201:9: sparse: sparse: Using plain integer as NULL pointer
   drivers/net/ethernet/huawei/bma/edma_drv/bma_pci.c:214:9: sparse: sparse: Using plain integer as NULL pointer
   drivers/net/ethernet/huawei/bma/edma_drv/bma_pci.c:251:17: sparse: sparse: Using plain integer as NULL pointer
...
...
drivers/net/ethernet/huawei/bma/edma_drv/bma_pci.c:259:14: sparse: sparse: cast removes address space '__iomem' of expression
drivers/net/ethernet/huawei/bma/edma_drv/bma_pci.c:258:37: sparse: sparse: incorrect type in assignment (different address spaces) @@     expected void [noderef] __iomem *edma_swap_addr @@     got unsigned char * @@
drivers/net/ethernet/huawei/bma/edma_drv/bma_pci.c:258:37: sparse:     expected void [noderef] __iomem *edma_swap_addr
   drivers/net/ethernet/huawei/bma/edma_drv/bma_pci.c:258:37: sparse:     got unsigned char *
   drivers/net/ethernet/huawei/bma/edma_drv/bma_pci.c:262:14: sparse: sparse: cast removes address space '__iomem' of expression
...
...
drivers/net/ethernet/huawei/bma/edma_drv/bma_pci.c:261:37: sparse: sparse: incorrect type in assignment (different address spaces) @@     expected void [noderef] __iomem *veth_swap_addr @@     got unsigned char * @@
drivers/net/ethernet/huawei/bma/edma_drv/bma_pci.c:261:37: sparse:     expected void [noderef] __iomem *veth_swap_addr
   drivers/net/ethernet/huawei/bma/edma_drv/bma_pci.c:261:37: sparse:     got unsigned char *
   drivers/net/ethernet/huawei/bma/edma_drv/bma_pci.c:282:17: sparse: sparse: Using plain integer as NULL pointer
   drivers/net/ethernet/huawei/bma/edma_drv/bma_pci.c:292:9: sparse: sparse: Using plain integer as NULL pointer
   drivers/net/ethernet/huawei/bma/edma_drv/bma_pci.c:303:9: sparse: sparse: Using plain integer as NULL pointer
   drivers/net/ethernet/huawei/bma/edma_drv/bma_pci.c:316:17: sparse: sparse: Using plain integer as NULL pointer
   drivers/net/ethernet/huawei/bma/edma_drv/bma_pci.c:328:5: sparse: sparse: symbol 'pme_pci_enable_msi' was not declared. Should it be static?
   drivers/net/ethernet/huawei/bma/edma_drv/bma_pci.c:361:25: sparse: sparse: Using plain integer as NULL pointer
   drivers/net/ethernet/huawei/bma/edma_drv/bma_pci.c:375:17: sparse: sparse: Using plain integer as NULL pointer
   drivers/net/ethernet/huawei/bma/edma_drv/bma_pci.c:354:5: sparse: sparse: symbol 'pci_device_init' was not declared. Should it be static?
   drivers/net/ethernet/huawei/bma/edma_drv/bma_pci.c:399:17: sparse: sparse: Using plain integer as NULL pointer
   drivers/net/ethernet/huawei/bma/edma_drv/bma_pci.c:405:17: sparse: sparse: Using plain integer as NULL pointer
   drivers/net/ethernet/huawei/bma/edma_drv/bma_pci.c:412:17: sparse: sparse: Using plain integer as NULL pointer
   drivers/net/ethernet/huawei/bma/edma_drv/bma_pci.c:383:5: sparse: sparse: symbol 'pci_device_config' was not declared. Should it be static?
   drivers/net/ethernet/huawei/bma/edma_drv/bma_pci.c:509:9: sparse: sparse: Using plain integer as NULL pointer
   drivers/net/ethernet/huawei/bma/edma_drv/bma_pci.c:513:17: sparse: sparse: Using plain integer as NULL pointer
   drivers/net/ethernet/huawei/bma/edma_drv/bma_pci.c:505:12: sparse: sparse: symbol 'bma_pci_init' was not declared. Should it be static?
   drivers/net/ethernet/huawei/bma/edma_drv/bma_pci.c:520:9: sparse: sparse: Using plain integer as NULL pointer
   drivers/net/ethernet/huawei/bma/edma_drv/bma_pci.c:518:13: sparse: sparse: symbol 'bma_pci_cleanup' was not declared. Should it be static?
--
...
...
drivers/net/ethernet/huawei/bma/edma_drv/edma_host.c:108:16: sparse: sparse: cast removes address space '__iomem' of expression
drivers/net/ethernet/huawei/bma/edma_drv/edma_host.c:110:17: sparse: sparse: Using plain integer as NULL pointer
   drivers/net/ethernet/huawei/bma/edma_drv/edma_host.c:131:35: sparse: sparse: cast removes address space '__iomem' of expression
   drivers/net/ethernet/huawei/bma/edma_drv/edma_host.c:136:28: sparse: sparse: cast removes address space '__iomem' of expression
   drivers/net/ethernet/huawei/bma/edma_drv/edma_host.c:147:16: sparse: sparse: cast removes address space '__iomem' of expression
   drivers/net/ethernet/huawei/bma/edma_drv/edma_host.c:254:17: sparse: sparse: Using plain integer as NULL pointer
   drivers/net/ethernet/huawei/bma/edma_drv/edma_host.c:413:25: sparse: sparse: Using plain integer as NULL pointer
   drivers/net/ethernet/huawei/bma/edma_drv/edma_host.c:581:6: sparse: sparse: symbol 'host_dma_transfer_without_list' was not declared. Should it be static?
   drivers/net/ethernet/huawei/bma/edma_drv/edma_host.c:629:17: sparse: sparse: Using plain integer as NULL pointer
   drivers/net/ethernet/huawei/bma/edma_drv/edma_host.c:608:6: sparse: sparse: symbol 'host_dma_transfer_withlist' was not declared. Should it be static?
   drivers/net/ethernet/huawei/bma/edma_drv/edma_host.c:653:17: sparse: sparse: Using plain integer as NULL pointer
   drivers/net/ethernet/huawei/bma/edma_drv/edma_host.c:668:17: sparse: sparse: Using plain integer as NULL pointer
   drivers/net/ethernet/huawei/bma/edma_drv/edma_host.c:708:25: sparse: sparse: Using plain integer as NULL pointer
   drivers/net/ethernet/huawei/bma/edma_drv/edma_host.c:716:9: sparse: sparse: Using plain integer as NULL pointer
   drivers/net/ethernet/huawei/bma/edma_drv/edma_host.c:748:25: sparse: sparse: cast removes address space '__iomem' of expression
   drivers/net/ethernet/huawei/bma/edma_drv/edma_host.c:754:25: sparse: sparse: Using plain integer as NULL pointer
   drivers/net/ethernet/huawei/bma/edma_drv/edma_host.c:759:25: sparse: sparse: Using plain integer as NULL pointer
   drivers/net/ethernet/huawei/bma/edma_drv/edma_host.c:765:17: sparse: sparse: Using plain integer as NULL pointer
   drivers/net/ethernet/huawei/bma/edma_drv/edma_host.c:777:27: sparse: sparse: cast removes address space '__iomem' of expression
   drivers/net/ethernet/huawei/bma/edma_drv/edma_host.c:791:17: sparse: sparse: Using plain integer as NULL pointer
   drivers/net/ethernet/huawei/bma/edma_drv/edma_host.c:810:9: sparse: sparse: Using plain integer as NULL pointer
   drivers/net/ethernet/huawei/bma/edma_drv/edma_host.c:852:35: sparse: sparse: cast removes address space '__iomem' of expression
   drivers/net/ethernet/huawei/bma/edma_drv/edma_host.c:859:49: sparse: sparse: Using plain integer as NULL pointer
   drivers/net/ethernet/huawei/bma/edma_drv/edma_host.c:869:49: sparse: sparse: Using plain integer as NULL pointer
   drivers/net/ethernet/huawei/bma/edma_drv/edma_host.c:876:33: sparse: sparse: Using plain integer as NULL pointer
   drivers/net/ethernet/huawei/bma/edma_drv/edma_host.c:960:17: sparse: sparse: Using plain integer as NULL pointer
   drivers/net/ethernet/huawei/bma/edma_drv/edma_host.c:966:17: sparse: sparse: Using plain integer as NULL pointer
   drivers/net/ethernet/huawei/bma/edma_drv/edma_host.c:996:17: sparse: sparse: Using plain integer as NULL pointer
   drivers/net/ethernet/huawei/bma/edma_drv/edma_host.c:1046:17: sparse: sparse: Using plain integer as NULL pointer
   drivers/net/ethernet/huawei/bma/edma_drv/edma_host.c:1050:17: sparse: sparse: Using plain integer as NULL pointer
   drivers/net/ethernet/huawei/bma/edma_drv/edma_host.c:1061:9: sparse: sparse: Using plain integer as NULL pointer
   drivers/net/ethernet/huawei/bma/edma_drv/edma_host.c:1087:17: sparse: sparse: Using plain integer as NULL pointer
   drivers/net/ethernet/huawei/bma/edma_drv/edma_host.c:1102:9: sparse: sparse: Using plain integer as NULL pointer
   drivers/net/ethernet/huawei/bma/edma_drv/edma_host.c:1126:17: sparse: sparse: Using plain integer as NULL pointer
   drivers/net/ethernet/huawei/bma/edma_drv/edma_host.c:1138:17: sparse: sparse: Using plain integer as NULL pointer
   drivers/net/ethernet/huawei/bma/edma_drv/edma_host.c:1160:25: sparse: sparse: cast removes address space '__iomem' of expression
   drivers/net/ethernet/huawei/bma/edma_drv/edma_host.c:1162:44: sparse: sparse: cast removes address space '__iomem' of expression
   drivers/net/ethernet/huawei/bma/edma_drv/edma_host.c:1165:22: sparse: sparse: cast removes address space '__iomem' of expression
...
...
drivers/net/ethernet/huawei/bma/edma_drv/edma_host.c:1166:33: sparse: sparse: incorrect type in argument 1 (different address spaces) @@     expected void const volatile [noderef] __iomem *addr @@     got unsigned char * @@
drivers/net/ethernet/huawei/bma/edma_drv/edma_host.c:1166:33: sparse:     expected void const volatile [noderef] __iomem *addr
   drivers/net/ethernet/huawei/bma/edma_drv/edma_host.c:1166:33: sparse:     got unsigned char *
   drivers/net/ethernet/huawei/bma/edma_drv/edma_host.c:1167:22: sparse: sparse: cast removes address space '__iomem' of expression
   drivers/net/ethernet/huawei/bma/edma_drv/edma_host.c:1167:22: sparse: sparse: incorrect type in argument 1 (different address spaces) @@     expected void const volatile [noderef] __iomem *addr @@     got unsigned char * @@
   drivers/net/ethernet/huawei/bma/edma_drv/edma_host.c:1167:22: sparse:     expected void const volatile [noderef] __iomem *addr
   drivers/net/ethernet/huawei/bma/edma_drv/edma_host.c:1167:22: sparse:     got unsigned char *
   drivers/net/ethernet/huawei/bma/edma_drv/edma_host.c:1169:9: sparse: sparse: Using plain integer as NULL pointer
   drivers/net/ethernet/huawei/bma/edma_drv/edma_host.c:1175:28: sparse: sparse: cast removes address space '__iomem' of expression
...
...
drivers/net/ethernet/huawei/bma/edma_drv/edma_host.c:1175:28: sparse: sparse: incorrect type in argument 2 (different address spaces) @@     expected void volatile [noderef] __iomem *addr @@     got void * @@
drivers/net/ethernet/huawei/bma/edma_drv/edma_host.c:1175:28: sparse:     expected void volatile [noderef] __iomem *addr
   drivers/net/ethernet/huawei/bma/edma_drv/edma_host.c:1175:28: sparse:     got void *
   drivers/net/ethernet/huawei/bma/edma_drv/edma_host.c:1181:25: sparse: sparse: Using plain integer as NULL pointer
   drivers/net/ethernet/huawei/bma/edma_drv/edma_host.c:1186:25: sparse: sparse: Using plain integer as NULL pointer
   drivers/net/ethernet/huawei/bma/edma_drv/edma_host.c:1196:33: sparse: sparse: Using plain integer as NULL pointer
   drivers/net/ethernet/huawei/bma/edma_drv/edma_host.c:1200:17: sparse: sparse: Using plain integer as NULL pointer
   drivers/net/ethernet/huawei/bma/edma_drv/edma_host.c:1201:17: sparse: sparse: Using plain integer as NULL pointer
   drivers/net/ethernet/huawei/bma/edma_drv/edma_host.c:1203:17: sparse: sparse: Using plain integer as NULL pointer
   drivers/net/ethernet/huawei/bma/edma_drv/edma_host.c:1217:25: sparse: sparse: Using plain integer as NULL pointer
   drivers/net/ethernet/huawei/bma/edma_drv/edma_host.c:1218:25: sparse: sparse: Using plain integer as NULL pointer
   drivers/net/ethernet/huawei/bma/edma_drv/edma_host.c:1219:25: sparse: sparse: Using plain integer as NULL pointer
   drivers/net/ethernet/huawei/bma/edma_drv/edma_host.c:1227:36: sparse: sparse: cast removes address space '__iomem' of expression
   drivers/net/ethernet/huawei/bma/edma_drv/edma_host.c:1227:36: sparse: sparse: incorrect type in argument 2 (different address spaces) @@     expected void volatile [noderef] __iomem *addr @@     got void * @@
   drivers/net/ethernet/huawei/bma/edma_drv/edma_host.c:1227:36: sparse:     expected void volatile [noderef] __iomem *addr
   drivers/net/ethernet/huawei/bma/edma_drv/edma_host.c:1227:36: sparse:     got void *
   drivers/net/ethernet/huawei/bma/edma_drv/edma_host.c:1272:17: sparse: sparse: Using plain integer as NULL pointer
   drivers/net/ethernet/huawei/bma/edma_drv/edma_host.c:1282:17: sparse: sparse: Using plain integer as NULL pointer
   drivers/net/ethernet/huawei/bma/edma_drv/edma_host.c:1287:17: sparse: sparse: Using plain integer as NULL pointer
   drivers/net/ethernet/huawei/bma/edma_drv/edma_host.c:1299:17: sparse: sparse: Using plain integer as NULL pointer
   drivers/net/ethernet/huawei/bma/edma_drv/edma_host.c:1356:17: sparse: sparse: Using plain integer as NULL pointer
   drivers/net/ethernet/huawei/bma/edma_drv/edma_host.c:1372:23: sparse: sparse: cast removes address space '__iomem' of expression
...
...
drivers/net/ethernet/huawei/bma/edma_drv/edma_host.c:1371:35: sparse: sparse: incorrect type in assignment (different address spaces) @@     expected void [noderef] __iomem *edma_send_addr @@     got void * @@
drivers/net/ethernet/huawei/bma/edma_drv/edma_host.c:1371:35: sparse:     expected void [noderef] __iomem *edma_send_addr
   drivers/net/ethernet/huawei/bma/edma_drv/edma_host.c:1371:35: sparse:     got void *
...
...
drivers/net/ethernet/huawei/bma/edma_drv/edma_host.c:1374:9: sparse: sparse: incorrect type in argument 1 (different address spaces) @@     expected void *s @@     got void [noderef] __iomem *edma_send_addr @@
drivers/net/ethernet/huawei/bma/edma_drv/edma_host.c:1374:9: sparse:     expected void *s
   drivers/net/ethernet/huawei/bma/edma_drv/edma_host.c:1374:9: sparse:     got void [noderef] __iomem *edma_send_addr
   drivers/net/ethernet/huawei/bma/edma_drv/edma_host.c:1377:23: sparse: sparse: cast removes address space '__iomem' of expression
...
...
drivers/net/ethernet/huawei/bma/edma_drv/edma_host.c:1376:35: sparse: sparse: incorrect type in assignment (different address spaces) @@     expected void [noderef] __iomem *edma_recv_addr @@     got void * @@
drivers/net/ethernet/huawei/bma/edma_drv/edma_host.c:1376:35: sparse:     expected void [noderef] __iomem *edma_recv_addr
   drivers/net/ethernet/huawei/bma/edma_drv/edma_host.c:1376:35: sparse:     got void *
   drivers/net/ethernet/huawei/bma/edma_drv/edma_host.c:1380:9: sparse: sparse: Using plain integer as NULL pointer
   drivers/net/ethernet/huawei/bma/edma_drv/edma_host.c:1406:16: sparse: sparse: cast removes address space '__iomem' of expression
   drivers/net/ethernet/huawei/bma/edma_drv/edma_host.c:1413:9: sparse: sparse: Using plain integer as NULL pointer
   drivers/net/ethernet/huawei/bma/edma_drv/edma_host.c:1442:16: sparse: sparse: cast removes address space '__iomem' of expression
vim +/__iomem +259 drivers/net/ethernet/huawei/bma/edma_drv/bma_pci.c
177	
   178	static int ioremap_pme_bar1_mem(struct pci_dev *pdev,
   179					struct bma_pci_dev_s *bma_pci_dev)
   180	{
   181		unsigned long bar1_resource_flag = 0;
   182		u32 data = 0;
   183	
   184		bma_pci_dev->kbox_base_len = PCI_PME_USEABLE_SPACE;
   185		BMA_LOG(DLOG_DEBUG, "1710\n");
   186	
   187		bma_pci_dev->bma_base_phy_addr =
   188		    pci_resource_start(pdev, PCI_BAR1);
   189		bar1_resource_flag = pci_resource_flags(pdev, PCI_BAR1);
   190	
   191		if (!(bar1_resource_flag & IORESOURCE_MEM)) {
   192			BMA_LOG(DLOG_ERROR,
   193				"Cannot find proper PCI device base address, aborting\n");
   194			return -ENODEV;
   195		}
   196	
   197		bma_pci_dev->bma_base_len = pci_resource_len(pdev, PCI_BAR1);
   198		bma_pci_dev->edma_swap_len = EDMA_SWAP_DATA_SIZE;
   199		bma_pci_dev->veth_swap_len = VETH_SWAP_DATA_SIZE;
   200	
   201		BMA_LOG(DLOG_DEBUG,
   202			"bar1: bma_base_len = 0x%lx, edma_swap_len = %ld, veth_swap_len = %ld(0x%lx)\n",
   203			bma_pci_dev->bma_base_len, bma_pci_dev->edma_swap_len,
   204			bma_pci_dev->veth_swap_len, bma_pci_dev->veth_swap_len);
   205	
   206		bma_pci_dev->hostrtc_phyaddr = bma_pci_dev->bma_base_phy_addr;
   207		/* edma */
   208		bma_pci_dev->edma_swap_phy_addr =
   209			bma_pci_dev->bma_base_phy_addr + EDMA_SWAP_BASE_OFFSET;
   210		/* veth */
   211		bma_pci_dev->veth_swap_phy_addr =
   212			bma_pci_dev->edma_swap_phy_addr + EDMA_SWAP_DATA_SIZE;
   213	
   214		BMA_LOG(DLOG_DEBUG,
   215			"bar1: hostrtc_phyaddr = 0x%lx, edma_swap_phy_addr = 0x%lx, veth_swap_phy_addr = 0x%lx\n",
   216			bma_pci_dev->hostrtc_phyaddr,
   217			bma_pci_dev->edma_swap_phy_addr,
   218			bma_pci_dev->veth_swap_phy_addr);
   219	
   220		__atu_config_H(pdev, 0,
   221			       GET_HIGH_ADDR(bma_pci_dev->kbox_base_phy_addr),
   222				(bma_pci_dev->kbox_base_phy_addr & 0xffffffff),
   223			0, PCI_BAR0_PME_1710, PCI_PME_USEABLE_SPACE);
   224	
   225		__atu_config_H(pdev, 1,
   226			       GET_HIGH_ADDR(bma_pci_dev->hostrtc_phyaddr),
   227				(bma_pci_dev->hostrtc_phyaddr & 0xffffffff),
   228				0, HOSTRTC_REG_BASE, HOSTRTC_REG_SIZE);
   229	
   230		__atu_config_H(pdev, 2,
   231			       GET_HIGH_ADDR(bma_pci_dev->edma_swap_phy_addr),
   232				(bma_pci_dev->edma_swap_phy_addr & 0xffffffff),
   233				0, EDMA_SWAP_DATA_BASE, EDMA_SWAP_DATA_SIZE);
   234	
   235		__atu_config_H(pdev, 3,
   236			       GET_HIGH_ADDR(bma_pci_dev->veth_swap_phy_addr),
   237				(bma_pci_dev->veth_swap_phy_addr & 0xffffffff),
   238				0, VETH_SWAP_DATA_BASE, VETH_SWAP_DATA_SIZE);
   239	
   240		if (bar1_resource_flag & IORESOURCE_CACHEABLE) {
   241			bma_pci_dev->bma_base_addr =
   242			    ioremap(bma_pci_dev->bma_base_phy_addr,
   243				    bma_pci_dev->bma_base_len);
   244		} else {
   245			bma_pci_dev->bma_base_addr =
   246			    IOREMAP(bma_pci_dev->bma_base_phy_addr,
   247				    bma_pci_dev->bma_base_len);
   248		}
   249	
   250		if (!bma_pci_dev->bma_base_addr) {
   251			BMA_LOG(DLOG_ERROR,
   252				"Cannot map device registers, aborting\n");
   253	
   254			return -ENODEV;
   255		}
   256	
   257		bma_pci_dev->hostrtc_viraddr = bma_pci_dev->bma_base_addr;
...
258		bma_pci_dev->edma_swap_addr =
259		    (unsigned char *)bma_pci_dev->bma_base_addr +
260		    EDMA_SWAP_BASE_OFFSET;
...
261		bma_pci_dev->veth_swap_addr =
262		    (unsigned char *)bma_pci_dev->edma_swap_addr +
   263		    EDMA_SWAP_DATA_SIZE;
   264	
   265		(void)pci_read_config_dword(pdev, 0x78, &data);
   266		data = data & 0xfffffff0;
   267		(void)pci_write_config_dword(pdev, 0x78, data);
   268		(void)pci_read_config_dword(pdev, 0x78, &data);
   269	
   270		return 0;
   271	}
   272
-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki