Hi Hannes,
[auto build test results on v4.3-rc3 -- if it's inappropriate base, please ignore]
reproduce:
# apt-get install sparse
make ARCH=x86_64 allmodconfig
make C=1 CF=-D__CHECK_ENDIAN__
sparse warnings: (new ones prefixed by >>)
drivers/scsi/device_handler/scsi_dh_alua.c:142:16: sparse: Variable length array is used.
drivers/scsi/device_handler/scsi_dh_alua.c:171:16: sparse: Variable length array is used.
drivers/scsi/device_handler/scsi_dh_alua.c:194:24: sparse: symbol 'alua_lookup_pg' was not declared. Should it be static?
drivers/scsi/device_handler/scsi_dh_alua.c:222:24: sparse: symbol 'alua_get_pg' was not declared. Should it be static?
>> drivers/scsi/device_handler/scsi_dh_alua.c:856:14: sparse: incompatible types in comparison expression (different address spaces)
drivers/scsi/device_handler/scsi_dh_alua.c:900:14: sparse: incompatible types in comparison expression (different address spaces)
drivers/scsi/device_handler/scsi_dh_alua.c:935:14: sparse: incompatible types in comparison expression (different address spaces)
vim +856 drivers/scsi/device_handler/scsi_dh_alua.c
840 struct alua_dh_data *h = sdev->handler_data;
841 struct alua_port_group *pg = NULL;
842 unsigned int optimize = 0, argc;
843 const char *p = params;
844 int result = SCSI_DH_OK;
845 unsigned long flags;
846
847 if ((sscanf(params, "%u", &argc) != 1) || (argc != 1))
848 return -EINVAL;
849
850 while (*p++)
851 ;
852 if ((sscanf(p, "%u", &optimize) != 1) || (optimize > 1))
853 return -EINVAL;
854
855 rcu_read_lock();
> 856 pg = rcu_dereference(h->pg);
857 if (!pg) {
858 rcu_read_unlock();
859 return -ENXIO;
860 }
861 spin_lock_irqsave(&pg->lock, flags);
862 if (optimize)
863 pg->flags |= ALUA_OPTIMIZE_STPG;
864 else
---
0-DAY kernel test infrastructure Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all Intel Corporation
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