* drivers/ptp/ptp_vmclock.c:445:24: sparse: sparse: incorrect type in return expression (different base types)
@ 2026-06-22 13:53 kernel test robot
0 siblings, 0 replies; 2+ messages in thread
From: kernel test robot @ 2026-06-22 13:53 UTC (permalink / raw)
To: Babis Chalios
Cc: oe-kbuild-all, linux-kernel, Jakub Kicinski, David Woodhouse,
Takahiro Itazuri
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: ef0c9f75a19532d7675384708fc8621e10850104
commit: 3b1526ddb25452385b52f2588b655f524a57070b ptp: vmclock: support device notifications
date: 5 months ago
config: x86_64-randconfig-123-20260622 (https://download.01.org/0day-ci/archive/20260622/202606222129.M1YS26K2-lkp@intel.com/config)
compiler: clang version 22.1.3 (https://github.com/llvm/llvm-project e9846648fd6183ee6d8cbdb4502213fcf902a211)
sparse: v0.6.5-rc1
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260622/202606222129.M1YS26K2-lkp@intel.com/reproduce)
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
| Fixes: 3b1526ddb254 ("ptp: vmclock: support device notifications")
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202606222129.M1YS26K2-lkp@intel.com/
sparse warnings: (new ones prefixed by >>)
>> drivers/ptp/ptp_vmclock.c:445:24: sparse: sparse: incorrect type in return expression (different base types) @@ expected restricted __poll_t @@ got int @@
drivers/ptp/ptp_vmclock.c:445:24: sparse: expected restricted __poll_t
drivers/ptp/ptp_vmclock.c:445:24: sparse: got int
drivers/ptp/ptp_vmclock.c:451:31: sparse: sparse: incorrect type in return expression (different base types) @@ expected restricted __poll_t @@ got int @@
drivers/ptp/ptp_vmclock.c:451:31: sparse: expected restricted __poll_t
drivers/ptp/ptp_vmclock.c:451:31: sparse: got int
vim +445 drivers/ptp/ptp_vmclock.c
433
434 static __poll_t vmclock_miscdev_poll(struct file *fp, poll_table *wait)
435 {
436 struct vmclock_file_state *fst = fp->private_data;
437 struct vmclock_state *st = fst->st;
438 uint32_t seq;
439
440 /*
441 * Hypervisor will not send us any notifications, so fail immediately
442 * to avoid having caller sleeping for ever.
443 */
444 if (!(le64_to_cpu(st->clk->flags) & VMCLOCK_FLAG_NOTIFICATION_PRESENT))
> 445 return POLLHUP;
446
447 poll_wait(fp, &st->disrupt_wait, wait);
448
449 seq = le32_to_cpu(st->clk->seq_count);
450 if (atomic_read(&fst->seq) != seq)
451 return POLLIN | POLLRDNORM;
452
453 return 0;
454 }
455
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
^ permalink raw reply [flat|nested] 2+ messages in thread* drivers/ptp/ptp_vmclock.c:445:24: sparse: sparse: incorrect type in return expression (different base types)
@ 2026-03-11 15:44 kernel test robot
0 siblings, 0 replies; 2+ messages in thread
From: kernel test robot @ 2026-03-11 15:44 UTC (permalink / raw)
To: Babis Chalios
Cc: oe-kbuild-all, linux-kernel, Jakub Kicinski, David Woodhouse,
Takahiro Itazuri
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: b29fb8829bff243512bb8c8908fd39406f9fd4c3
commit: 3b1526ddb25452385b52f2588b655f524a57070b ptp: vmclock: support device notifications
date: 5 weeks ago
config: x86_64-randconfig-123-20260311 (https://download.01.org/0day-ci/archive/20260311/202603112306.7c5SVcUv-lkp@intel.com/config)
compiler: gcc-14 (Debian 14.2.0-19) 14.2.0
sparse: v0.6.5-rc1
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260311/202603112306.7c5SVcUv-lkp@intel.com/reproduce)
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/202603112306.7c5SVcUv-lkp@intel.com/
sparse warnings: (new ones prefixed by >>)
>> drivers/ptp/ptp_vmclock.c:445:24: sparse: sparse: incorrect type in return expression (different base types) @@ expected restricted __poll_t @@ got int @@
drivers/ptp/ptp_vmclock.c:445:24: sparse: expected restricted __poll_t
drivers/ptp/ptp_vmclock.c:445:24: sparse: got int
drivers/ptp/ptp_vmclock.c:451:31: sparse: sparse: incorrect type in return expression (different base types) @@ expected restricted __poll_t @@ got int @@
drivers/ptp/ptp_vmclock.c:451:31: sparse: expected restricted __poll_t
drivers/ptp/ptp_vmclock.c:451:31: sparse: got int
vim +445 drivers/ptp/ptp_vmclock.c
433
434 static __poll_t vmclock_miscdev_poll(struct file *fp, poll_table *wait)
435 {
436 struct vmclock_file_state *fst = fp->private_data;
437 struct vmclock_state *st = fst->st;
438 uint32_t seq;
439
440 /*
441 * Hypervisor will not send us any notifications, so fail immediately
442 * to avoid having caller sleeping for ever.
443 */
444 if (!(le64_to_cpu(st->clk->flags) & VMCLOCK_FLAG_NOTIFICATION_PRESENT))
> 445 return POLLHUP;
446
447 poll_wait(fp, &st->disrupt_wait, wait);
448
449 seq = le32_to_cpu(st->clk->seq_count);
450 if (atomic_read(&fst->seq) != seq)
451 return POLLIN | POLLRDNORM;
452
453 return 0;
454 }
455
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
^ permalink raw reply [flat|nested] 2+ messages in thread
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