tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: e37b12e4bb21e7c81732370b0a2b34bd196f380b commit: 8f28ca6bd8211214faf717677bbffe375c2a6072 iomap: constify ioreadX() iomem argument (as in generic implementation) date: 4 months ago config: i386-randconfig-s001-20201220 (attached as .config) compiler: gcc-9 (Debian 9.3.0-15) 9.3.0 reproduce: # apt-get install sparse # sparse version: v0.6.3-184-g1b896707-dirty # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=8f28ca6bd8211214faf717677bbffe375c2a6072 git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git git fetch --no-tags linus master git checkout 8f28ca6bd8211214faf717677bbffe375c2a6072 # 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 <lkp@xxxxxxxxx> "sparse warnings: (new ones prefixed by >>)" >> drivers/scsi/fnic/vnic_dev.c:332:32: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const [noderef] __iomem * @@ got unsigned int * @@ drivers/scsi/fnic/vnic_dev.c:332:32: sparse: expected void const [noderef] __iomem * drivers/scsi/fnic/vnic_dev.c:332:32: sparse: got unsigned int * drivers/scsi/fnic/vnic_dev.c:333:37: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const [noderef] __iomem * @@ got unsigned int * @@ drivers/scsi/fnic/vnic_dev.c:333:37: sparse: expected void const [noderef] __iomem * drivers/scsi/fnic/vnic_dev.c:333:37: sparse: got unsigned int * drivers/scsi/fnic/vnic_dev.c:373:36: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void [noderef] __iomem * @@ got unsigned int * @@ drivers/scsi/fnic/vnic_dev.c:373:36: sparse: expected void [noderef] __iomem * drivers/scsi/fnic/vnic_dev.c:373:36: sparse: got unsigned int * drivers/scsi/fnic/vnic_dev.c:469:32: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct vnic_wq_ctrl *wq_ctrl @@ got struct vnic_wq_ctrl [noderef] __iomem *ctrl @@ drivers/scsi/fnic/vnic_dev.c:469:32: sparse: expected struct vnic_wq_ctrl *wq_ctrl drivers/scsi/fnic/vnic_dev.c:469:32: sparse: got struct vnic_wq_ctrl [noderef] __iomem *ctrl drivers/scsi/fnic/vnic_dev.c:943:11: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected void *p @@ got void [noderef] __iomem * @@ drivers/scsi/fnic/vnic_dev.c:943:11: sparse: expected void *p drivers/scsi/fnic/vnic_dev.c:943:11: sparse: got void [noderef] __iomem * vim +332 drivers/scsi/fnic/vnic_dev.c 5df6d737dd4b0fe Abhijeet Joglekar 2009-04-17 318 363f4d937501ba4 Jason Yan 2020-04-15 319 static int vnic_dev_cmd2(struct vnic_dev *vdev, enum vnic_devcmd_cmd cmd, 0a2fdd2215e1fa3 Satish Kharat 2019-01-18 320 int wait) 0a2fdd2215e1fa3 Satish Kharat 2019-01-18 321 { 0a2fdd2215e1fa3 Satish Kharat 2019-01-18 322 struct devcmd2_controller *dc2c = vdev->devcmd2; 0a2fdd2215e1fa3 Satish Kharat 2019-01-18 323 struct devcmd2_result *result; 0a2fdd2215e1fa3 Satish Kharat 2019-01-18 324 u8 color; 0a2fdd2215e1fa3 Satish Kharat 2019-01-18 325 unsigned int i; 0a2fdd2215e1fa3 Satish Kharat 2019-01-18 326 int delay; 0a2fdd2215e1fa3 Satish Kharat 2019-01-18 327 int err; 0a2fdd2215e1fa3 Satish Kharat 2019-01-18 328 u32 fetch_index; 0a2fdd2215e1fa3 Satish Kharat 2019-01-18 329 u32 posted; 0a2fdd2215e1fa3 Satish Kharat 2019-01-18 330 u32 new_posted; 0a2fdd2215e1fa3 Satish Kharat 2019-01-18 331 0a2fdd2215e1fa3 Satish Kharat 2019-01-18 @332 posted = ioread32(&dc2c->wq_ctrl->posted_index); 0a2fdd2215e1fa3 Satish Kharat 2019-01-18 333 fetch_index = ioread32(&dc2c->wq_ctrl->fetch_index); 0a2fdd2215e1fa3 Satish Kharat 2019-01-18 334 0a2fdd2215e1fa3 Satish Kharat 2019-01-18 335 if (posted == 0xFFFFFFFF || fetch_index == 0xFFFFFFFF) { 0a2fdd2215e1fa3 Satish Kharat 2019-01-18 336 /* Hardware surprise removal: return error */ 0a2fdd2215e1fa3 Satish Kharat 2019-01-18 337 pr_err("%s: devcmd2 invalid posted or fetch index on cmd %d\n", 0a2fdd2215e1fa3 Satish Kharat 2019-01-18 338 pci_name(vdev->pdev), _CMD_N(cmd)); 0a2fdd2215e1fa3 Satish Kharat 2019-01-18 339 pr_err("%s: fetch index: %u, posted index: %u\n", 0a2fdd2215e1fa3 Satish Kharat 2019-01-18 340 pci_name(vdev->pdev), fetch_index, posted); 0a2fdd2215e1fa3 Satish Kharat 2019-01-18 341 0a2fdd2215e1fa3 Satish Kharat 2019-01-18 342 return -ENODEV; 0a2fdd2215e1fa3 Satish Kharat 2019-01-18 343 0a2fdd2215e1fa3 Satish Kharat 2019-01-18 344 } 0a2fdd2215e1fa3 Satish Kharat 2019-01-18 345 0a2fdd2215e1fa3 Satish Kharat 2019-01-18 346 new_posted = (posted + 1) % DEVCMD2_RING_SIZE; 0a2fdd2215e1fa3 Satish Kharat 2019-01-18 347 0a2fdd2215e1fa3 Satish Kharat 2019-01-18 348 if (new_posted == fetch_index) { 0a2fdd2215e1fa3 Satish Kharat 2019-01-18 349 pr_err("%s: devcmd2 wq full while issuing cmd %d\n", 0a2fdd2215e1fa3 Satish Kharat 2019-01-18 350 pci_name(vdev->pdev), _CMD_N(cmd)); 0a2fdd2215e1fa3 Satish Kharat 2019-01-18 351 pr_err("%s: fetch index: %u, posted index: %u\n", 0a2fdd2215e1fa3 Satish Kharat 2019-01-18 352 pci_name(vdev->pdev), fetch_index, posted); 0a2fdd2215e1fa3 Satish Kharat 2019-01-18 353 return -EBUSY; 0a2fdd2215e1fa3 Satish Kharat 2019-01-18 354 0a2fdd2215e1fa3 Satish Kharat 2019-01-18 355 } 0a2fdd2215e1fa3 Satish Kharat 2019-01-18 356 dc2c->cmd_ring[posted].cmd = cmd; 0a2fdd2215e1fa3 Satish Kharat 2019-01-18 357 dc2c->cmd_ring[posted].flags = 0; 0a2fdd2215e1fa3 Satish Kharat 2019-01-18 358 0a2fdd2215e1fa3 Satish Kharat 2019-01-18 359 if ((_CMD_FLAGS(cmd) & _CMD_FLAGS_NOWAIT)) 0a2fdd2215e1fa3 Satish Kharat 2019-01-18 360 dc2c->cmd_ring[posted].flags |= DEVCMD2_FNORESULT; 0a2fdd2215e1fa3 Satish Kharat 2019-01-18 361 if (_CMD_DIR(cmd) & _CMD_DIR_WRITE) { 0a2fdd2215e1fa3 Satish Kharat 2019-01-18 362 for (i = 0; i < VNIC_DEVCMD_NARGS; i++) 0a2fdd2215e1fa3 Satish Kharat 2019-01-18 363 dc2c->cmd_ring[posted].args[i] = vdev->args[i]; 0a2fdd2215e1fa3 Satish Kharat 2019-01-18 364 0a2fdd2215e1fa3 Satish Kharat 2019-01-18 365 } 0a2fdd2215e1fa3 Satish Kharat 2019-01-18 366 0a2fdd2215e1fa3 Satish Kharat 2019-01-18 367 /* Adding write memory barrier prevents compiler and/or CPU 0a2fdd2215e1fa3 Satish Kharat 2019-01-18 368 * reordering, thus avoiding descriptor posting before 0a2fdd2215e1fa3 Satish Kharat 2019-01-18 369 * descriptor is initialized. Otherwise, hardware can read 0a2fdd2215e1fa3 Satish Kharat 2019-01-18 370 * stale descriptor fields. 0a2fdd2215e1fa3 Satish Kharat 2019-01-18 371 */ 0a2fdd2215e1fa3 Satish Kharat 2019-01-18 372 wmb(); 0a2fdd2215e1fa3 Satish Kharat 2019-01-18 373 iowrite32(new_posted, &dc2c->wq_ctrl->posted_index); 0a2fdd2215e1fa3 Satish Kharat 2019-01-18 374 0a2fdd2215e1fa3 Satish Kharat 2019-01-18 375 if (dc2c->cmd_ring[posted].flags & DEVCMD2_FNORESULT) 0a2fdd2215e1fa3 Satish Kharat 2019-01-18 376 return 0; 0a2fdd2215e1fa3 Satish Kharat 2019-01-18 377 0a2fdd2215e1fa3 Satish Kharat 2019-01-18 378 result = dc2c->result + dc2c->next_result; 0a2fdd2215e1fa3 Satish Kharat 2019-01-18 379 color = dc2c->color; 0a2fdd2215e1fa3 Satish Kharat 2019-01-18 380 0a2fdd2215e1fa3 Satish Kharat 2019-01-18 381 dc2c->next_result++; 0a2fdd2215e1fa3 Satish Kharat 2019-01-18 382 if (dc2c->next_result == dc2c->result_size) { 0a2fdd2215e1fa3 Satish Kharat 2019-01-18 383 dc2c->next_result = 0; 0a2fdd2215e1fa3 Satish Kharat 2019-01-18 384 dc2c->color = dc2c->color ? 0 : 1; 0a2fdd2215e1fa3 Satish Kharat 2019-01-18 385 } 0a2fdd2215e1fa3 Satish Kharat 2019-01-18 386 0a2fdd2215e1fa3 Satish Kharat 2019-01-18 387 for (delay = 0; delay < wait; delay++) { 0a2fdd2215e1fa3 Satish Kharat 2019-01-18 388 udelay(100); 0a2fdd2215e1fa3 Satish Kharat 2019-01-18 389 if (result->color == color) { 0a2fdd2215e1fa3 Satish Kharat 2019-01-18 390 if (result->error) { 0a2fdd2215e1fa3 Satish Kharat 2019-01-18 391 err = -(int) result->error; 0a2fdd2215e1fa3 Satish Kharat 2019-01-18 392 if (err != ERR_ECMDUNKNOWN || 0a2fdd2215e1fa3 Satish Kharat 2019-01-18 393 cmd != CMD_CAPABILITY) 0a2fdd2215e1fa3 Satish Kharat 2019-01-18 394 pr_err("%s:Error %d devcmd %d\n", 0a2fdd2215e1fa3 Satish Kharat 2019-01-18 395 pci_name(vdev->pdev), 0a2fdd2215e1fa3 Satish Kharat 2019-01-18 396 err, _CMD_N(cmd)); 0a2fdd2215e1fa3 Satish Kharat 2019-01-18 397 return err; 0a2fdd2215e1fa3 Satish Kharat 2019-01-18 398 } 0a2fdd2215e1fa3 Satish Kharat 2019-01-18 399 if (_CMD_DIR(cmd) & _CMD_DIR_READ) { 0a2fdd2215e1fa3 Satish Kharat 2019-01-18 400 rmb(); /*prevent reorder while reding result*/ 0a2fdd2215e1fa3 Satish Kharat 2019-01-18 401 for (i = 0; i < VNIC_DEVCMD_NARGS; i++) 0a2fdd2215e1fa3 Satish Kharat 2019-01-18 402 vdev->args[i] = result->results[i]; 0a2fdd2215e1fa3 Satish Kharat 2019-01-18 403 } 0a2fdd2215e1fa3 Satish Kharat 2019-01-18 404 return 0; 0a2fdd2215e1fa3 Satish Kharat 2019-01-18 405 } 0a2fdd2215e1fa3 Satish Kharat 2019-01-18 406 } 0a2fdd2215e1fa3 Satish Kharat 2019-01-18 407 0a2fdd2215e1fa3 Satish Kharat 2019-01-18 408 pr_err("%s:Timed out devcmd %d\n", pci_name(vdev->pdev), _CMD_N(cmd)); 0a2fdd2215e1fa3 Satish Kharat 2019-01-18 409 0a2fdd2215e1fa3 Satish Kharat 2019-01-18 410 return -ETIMEDOUT; 0a2fdd2215e1fa3 Satish Kharat 2019-01-18 411 } 0a2fdd2215e1fa3 Satish Kharat 2019-01-18 412 :::::: The code at line 332 was first introduced by commit :::::: 0a2fdd2215e1fa3b417792bd6e9cb719822cbfb6 scsi: fnic: Adding devcmd2 init and posting interfaces :::::: TO: Satish Kharat <satishkh@xxxxxxxxx> :::::: CC: Martin K. Petersen <martin.petersen@xxxxxxxxxx> --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
Attachment:
.config.gz
Description: application/gzip
