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| author | Will Deacon <will@kernel.org> | 2020-01-15 16:35:16 +0100 |
|---|---|---|
| committer | Will Deacon <will@kernel.org> | 2020-01-15 17:30:28 +0100 |
| commit | 92c1d360dcda0ebd49253c0899bfeeb117be91fe (patch) | |
| tree | c292d09a111905911bb616e66f72770a1e7c55c8 /certs | |
| parent | iommu/arm-smmu-v3: Improve add_device() error handling (diff) | |
| download | linux-92c1d360dcda0ebd49253c0899bfeeb117be91fe.tar.xz linux-92c1d360dcda0ebd49253c0899bfeeb117be91fe.zip | |
iommu/arm-smmu-v3: Return -EBUSY when trying to re-add a device
Although we WARN in arm_smmu_add_device() if the device being added has
been added already without a subsequent call to arm_smmu_remove_device(),
we still continue half-heartedly, initialising the stream-table for any
new StreamIDs that may have magically appeared and re-establishing device
links that should still be there from last time.
Given that calling ->add_device() twice without removing the device in the
meantime is indicative of an error in the caller, just return -EBUSY after
warning.
Cc: Robin Murphy <robin.murphy@arm.com>
Cc: Jean Philippe-Brucker <jean-philippe@linaro.org>
Signed-off-by: Will Deacon <will@kernel.org>
Diffstat (limited to 'certs')
0 files changed, 0 insertions, 0 deletions