3:49 p.m.
tree: https://git.kernel.org/pub/scm/linux/kernel/git/tnguy/next-queue.git dev-queue
head: 3f69b6741396fada730c8a1ccc0bfa8c771b9dab
commit: cf576c848e1829ce268474d0510dab01a4235e36 [50/96] igc: Add support for PTP
getcrosststamp()
config: i386-randconfig-s002-20201113 (attached as .config)
compiler: gcc-9 (Debian 9.3.0-15) 9.3.0
reproduce:
# apt-get install sparse
# sparse version: v0.6.3-107-gaf3512a6-dirty
#
https://git.kernel.org/pub/scm/linux/kernel/git/tnguy/next-queue.git/comm...
git remote add tnguy-next-queue
https://git.kernel.org/pub/scm/linux/kernel/git/tnguy/next-queue.git
git fetch --no-tags tnguy-next-queue dev-queue
git checkout cf576c848e1829ce268474d0510dab01a4235e36
# 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(a)intel.com>
"sparse warnings: (new ones prefixed by >>)"
> drivers/net/ethernet/intel/igc/igc_ptp.c:450:21: sparse: sparse:
cast to restricted __be32
> drivers/net/ethernet/intel/igc/igc_ptp.c:450:21: sparse: sparse: cast to restricted
__be32
> drivers/net/ethernet/intel/igc/igc_ptp.c:450:21: sparse: sparse: cast to restricted
__be32
> drivers/net/ethernet/intel/igc/igc_ptp.c:450:21: sparse: sparse: cast to restricted
__be32
> drivers/net/ethernet/intel/igc/igc_ptp.c:450:21: sparse: sparse: cast to restricted
__be32
> drivers/net/ethernet/intel/igc/igc_ptp.c:450:21: sparse: sparse: cast to restricted
__be32
vim +450 drivers/net/ethernet/intel/igc/igc_ptp.c
434
435 static void igc_ptm_gather_report(struct igc_adapter *adapter)
436 {
437 struct igc_hw *hw = &adapter->hw;
438 u32 t2_curr_h, t2_curr_l;
439 ktime_t t1, t2_curr;
440
441 t1 = ktime_set(rd32(IGC_PTM_T1_TIM0_H),
442 rd32(IGC_PTM_T1_TIM0_L));
443
444 t2_curr_l = rd32(IGC_PTM_CURR_T2_L);
445 t2_curr_h = rd32(IGC_PTM_CURR_T2_H);
446
447 /* FIXME: There's an ambiguity on what endianness some PCIe PTM
448 * messages should use. Find a more robust way to handle this.
449 */
450 t2_curr_h = be32_to_cpu(t2_curr_h);
451
452 t2_curr = ((s64)t2_curr_h << 32 | t2_curr_l);
453
454 wr32(IGC_PTM_STAT, IGC_PTM_STAT_VALID);
455
456 mutex_lock(&adapter->ptm_time_lock);
457
458 /* Because get_device_system_crosststamp() requires that the
459 * historic timestamp is before the PTM device/host
460 * timestamps, we keep track of the current and previous
461 * snapshot (historic timestamp).
462 */
463 memcpy(&adapter->prev_snapshot,
464 &adapter->curr_snapshot, sizeof(adapter->prev_snapshot));
465 ktime_get_snapshot(&adapter->curr_snapshot);
466
467 adapter->ptm_device_time = t1;
468 adapter->ptm_host_time = igc_device_tstamp_to_system(t2_curr);
469 mutex_unlock(&adapter->ptm_time_lock);
470
471 mod_delayed_work(system_wq, &adapter->ptm_report,
472 msecs_to_jiffies(IGC_PTM_CYCLE_TIME_MSECS));
473 }
474
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org