8:02 a.m.
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: 89698becf06d341a700913c3d89ce2a914af69a2
commit: 8f28ca6bd8211214faf717677bbffe375c2a6072 iomap: constify ioreadX() iomem argument
(as in generic implementation)
date: 8 months ago
config: x86_64-randconfig-s021-20210413 (attached as .config)
compiler: gcc-9 (Debian 9.3.0-22) 9.3.0
reproduce:
# apt-get install sparse
# sparse version: v0.6.3-280-g2cd6d34e-dirty
#
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit...
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=x86_64
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp(a)intel.com>
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
5df6d737dd4b0f Abhijeet Joglekar 2009-04-17 318
363f4d937501ba Jason Yan 2020-04-15 319 static int vnic_dev_cmd2(struct vnic_dev
*vdev, enum vnic_devcmd_cmd cmd,
0a2fdd2215e1fa Satish Kharat 2019-01-18 320 int wait)
0a2fdd2215e1fa Satish Kharat 2019-01-18 321 {
0a2fdd2215e1fa Satish Kharat 2019-01-18 322 struct devcmd2_controller *dc2c =
vdev->devcmd2;
0a2fdd2215e1fa Satish Kharat 2019-01-18 323 struct devcmd2_result *result;
0a2fdd2215e1fa Satish Kharat 2019-01-18 324 u8 color;
0a2fdd2215e1fa Satish Kharat 2019-01-18 325 unsigned int i;
0a2fdd2215e1fa Satish Kharat 2019-01-18 326 int delay;
0a2fdd2215e1fa Satish Kharat 2019-01-18 327 int err;
0a2fdd2215e1fa Satish Kharat 2019-01-18 328 u32 fetch_index;
0a2fdd2215e1fa Satish Kharat 2019-01-18 329 u32 posted;
0a2fdd2215e1fa Satish Kharat 2019-01-18 330 u32 new_posted;
0a2fdd2215e1fa Satish Kharat 2019-01-18 331
0a2fdd2215e1fa Satish Kharat 2019-01-18 @332 posted =
ioread32(&dc2c->wq_ctrl->posted_index);
0a2fdd2215e1fa Satish Kharat 2019-01-18 333 fetch_index =
ioread32(&dc2c->wq_ctrl->fetch_index);
0a2fdd2215e1fa Satish Kharat 2019-01-18 334
0a2fdd2215e1fa Satish Kharat 2019-01-18 335 if (posted == 0xFFFFFFFF || fetch_index
== 0xFFFFFFFF) {
0a2fdd2215e1fa Satish Kharat 2019-01-18 336 /* Hardware surprise removal: return
error */
0a2fdd2215e1fa Satish Kharat 2019-01-18 337 pr_err("%s: devcmd2 invalid
posted or fetch index on cmd %d\n",
0a2fdd2215e1fa Satish Kharat 2019-01-18 338 pci_name(vdev->pdev),
_CMD_N(cmd));
0a2fdd2215e1fa Satish Kharat 2019-01-18 339 pr_err("%s: fetch index: %u,
posted index: %u\n",
0a2fdd2215e1fa Satish Kharat 2019-01-18 340 pci_name(vdev->pdev),
fetch_index, posted);
0a2fdd2215e1fa Satish Kharat 2019-01-18 341
0a2fdd2215e1fa Satish Kharat 2019-01-18 342 return -ENODEV;
0a2fdd2215e1fa Satish Kharat 2019-01-18 343
0a2fdd2215e1fa Satish Kharat 2019-01-18 344 }
0a2fdd2215e1fa Satish Kharat 2019-01-18 345
0a2fdd2215e1fa Satish Kharat 2019-01-18 346 new_posted = (posted + 1) %
DEVCMD2_RING_SIZE;
0a2fdd2215e1fa Satish Kharat 2019-01-18 347
0a2fdd2215e1fa Satish Kharat 2019-01-18 348 if (new_posted == fetch_index) {
0a2fdd2215e1fa Satish Kharat 2019-01-18 349 pr_err("%s: devcmd2 wq full while
issuing cmd %d\n",
0a2fdd2215e1fa Satish Kharat 2019-01-18 350 pci_name(vdev->pdev),
_CMD_N(cmd));
0a2fdd2215e1fa Satish Kharat 2019-01-18 351 pr_err("%s: fetch index: %u,
posted index: %u\n",
0a2fdd2215e1fa Satish Kharat 2019-01-18 352 pci_name(vdev->pdev),
fetch_index, posted);
0a2fdd2215e1fa Satish Kharat 2019-01-18 353 return -EBUSY;
0a2fdd2215e1fa Satish Kharat 2019-01-18 354
0a2fdd2215e1fa Satish Kharat 2019-01-18 355 }
0a2fdd2215e1fa Satish Kharat 2019-01-18 356 dc2c->cmd_ring[posted].cmd = cmd;
0a2fdd2215e1fa Satish Kharat 2019-01-18 357 dc2c->cmd_ring[posted].flags = 0;
0a2fdd2215e1fa Satish Kharat 2019-01-18 358
0a2fdd2215e1fa Satish Kharat 2019-01-18 359 if ((_CMD_FLAGS(cmd) &
_CMD_FLAGS_NOWAIT))
0a2fdd2215e1fa Satish Kharat 2019-01-18 360 dc2c->cmd_ring[posted].flags |=
DEVCMD2_FNORESULT;
0a2fdd2215e1fa Satish Kharat 2019-01-18 361 if (_CMD_DIR(cmd) & _CMD_DIR_WRITE)
{
0a2fdd2215e1fa Satish Kharat 2019-01-18 362 for (i = 0; i < VNIC_DEVCMD_NARGS;
i++)
0a2fdd2215e1fa Satish Kharat 2019-01-18 363 dc2c->cmd_ring[posted].args[i] =
vdev->args[i];
0a2fdd2215e1fa Satish Kharat 2019-01-18 364
0a2fdd2215e1fa Satish Kharat 2019-01-18 365 }
0a2fdd2215e1fa Satish Kharat 2019-01-18 366
0a2fdd2215e1fa Satish Kharat 2019-01-18 367 /* Adding write memory barrier prevents
compiler and/or CPU
0a2fdd2215e1fa Satish Kharat 2019-01-18 368 * reordering, thus avoiding descriptor
posting before
0a2fdd2215e1fa Satish Kharat 2019-01-18 369 * descriptor is initialized.
Otherwise, hardware can read
0a2fdd2215e1fa Satish Kharat 2019-01-18 370 * stale descriptor fields.
0a2fdd2215e1fa Satish Kharat 2019-01-18 371 */
0a2fdd2215e1fa Satish Kharat 2019-01-18 372 wmb();
0a2fdd2215e1fa Satish Kharat 2019-01-18 373 iowrite32(new_posted,
&dc2c->wq_ctrl->posted_index);
0a2fdd2215e1fa Satish Kharat 2019-01-18 374
0a2fdd2215e1fa Satish Kharat 2019-01-18 375 if (dc2c->cmd_ring[posted].flags
& DEVCMD2_FNORESULT)
0a2fdd2215e1fa Satish Kharat 2019-01-18 376 return 0;
0a2fdd2215e1fa Satish Kharat 2019-01-18 377
0a2fdd2215e1fa Satish Kharat 2019-01-18 378 result = dc2c->result +
dc2c->next_result;
0a2fdd2215e1fa Satish Kharat 2019-01-18 379 color = dc2c->color;
0a2fdd2215e1fa Satish Kharat 2019-01-18 380
0a2fdd2215e1fa Satish Kharat 2019-01-18 381 dc2c->next_result++;
0a2fdd2215e1fa Satish Kharat 2019-01-18 382 if (dc2c->next_result ==
dc2c->result_size) {
0a2fdd2215e1fa Satish Kharat 2019-01-18 383 dc2c->next_result = 0;
0a2fdd2215e1fa Satish Kharat 2019-01-18 384 dc2c->color = dc2c->color ? 0 :
1;
0a2fdd2215e1fa Satish Kharat 2019-01-18 385 }
0a2fdd2215e1fa Satish Kharat 2019-01-18 386
0a2fdd2215e1fa Satish Kharat 2019-01-18 387 for (delay = 0; delay < wait;
delay++) {
0a2fdd2215e1fa Satish Kharat 2019-01-18 388 udelay(100);
0a2fdd2215e1fa Satish Kharat 2019-01-18 389 if (result->color == color) {
0a2fdd2215e1fa Satish Kharat 2019-01-18 390 if (result->error) {
0a2fdd2215e1fa Satish Kharat 2019-01-18 391 err = -(int) result->error;
0a2fdd2215e1fa Satish Kharat 2019-01-18 392 if (err != ERR_ECMDUNKNOWN ||
0a2fdd2215e1fa Satish Kharat 2019-01-18 393 cmd != CMD_CAPABILITY)
0a2fdd2215e1fa Satish Kharat 2019-01-18 394 pr_err("%s:Error %d devcmd
%d\n",
0a2fdd2215e1fa Satish Kharat 2019-01-18 395 pci_name(vdev->pdev),
0a2fdd2215e1fa Satish Kharat 2019-01-18 396 err, _CMD_N(cmd));
0a2fdd2215e1fa Satish Kharat 2019-01-18 397 return err;
0a2fdd2215e1fa Satish Kharat 2019-01-18 398 }
0a2fdd2215e1fa Satish Kharat 2019-01-18 399 if (_CMD_DIR(cmd) &
_CMD_DIR_READ) {
0a2fdd2215e1fa Satish Kharat 2019-01-18 400 rmb(); /*prevent reorder while
reding result*/
0a2fdd2215e1fa Satish Kharat 2019-01-18 401 for (i = 0; i <
VNIC_DEVCMD_NARGS; i++)
0a2fdd2215e1fa Satish Kharat 2019-01-18 402 vdev->args[i] =
result->results[i];
0a2fdd2215e1fa Satish Kharat 2019-01-18 403 }
0a2fdd2215e1fa Satish Kharat 2019-01-18 404 return 0;
0a2fdd2215e1fa Satish Kharat 2019-01-18 405 }
0a2fdd2215e1fa Satish Kharat 2019-01-18 406 }
0a2fdd2215e1fa Satish Kharat 2019-01-18 407
0a2fdd2215e1fa Satish Kharat 2019-01-18 408 pr_err("%s:Timed out devcmd
%d\n", pci_name(vdev->pdev), _CMD_N(cmd));
0a2fdd2215e1fa Satish Kharat 2019-01-18 409
0a2fdd2215e1fa Satish Kharat 2019-01-18 410 return -ETIMEDOUT;
0a2fdd2215e1fa Satish Kharat 2019-01-18 411 }
0a2fdd2215e1fa 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(a)cisco.com>
:::::: CC: Martin K. Petersen <martin.petersen(a)oracle.com>
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org