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iommu/arm-smmu-v3: Consolidate identical timeouts
We have separate (identical) timeout values for polling for a queue to drain and waiting for an MSI to signal CMD_SYNC completion. In reality, we only wait for the command queue to drain if we're waiting on a sync, so just merged these two timeouts into a single constant. Signed-off-by: Will Deacon <will.deacon@arm.com>
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Will Deacon
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Oct 20, 2017
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