Hello Joerg Roedel,
This is a semi-automatic email about new static checker warnings.
The patch 9648cbc9625b: "iommu/arm-smmu: Make use of the
iommu_register interface" from Feb 1, 2017, leads to the following
Smatch complaint:
./drivers/iommu/arm-smmu-v3.c:1957 arm_smmu_remove_device()
warn: variable dereferenced before check 'master' (see line 1956)
./drivers/iommu/arm-smmu-v3.c
1955 master = fwspec->iommu_priv;
1956 smmu = master->smmu;
^^^^^^^^^^^^
Pach adds unchecked dereference
1957 if (master && master->ste.assigned)
^^^^^^
The old code assumes "master" can be NULL.
1958 arm_smmu_detach_dev(dev);
1959 iommu_group_remove_device(dev);
regards,
dan carpenter
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