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Robin Murphy authored
of_pci_iommu_init() tries to be clever and stop its alias walk at the device represented by master_np, in case of weird PCI topologies where the bridge to the IOMMU and the rest of the system is not at the root. It turns out this is a bit short-sighted, since there are plenty of other callers of pci_for_each_dma_alias() which would also need the same behaviour in that situation, and the only platform so far with such a topology (Cavium ThunderX2) already solves it more generally via a PCI quirk. As this check is effectively redundant, and returning a boolean value as an int is a bit broken anyway, let's just get rid of it. Reported-by:
Jean-Philippe Brucker <jean-philippe.brucker@arm.com> Fixes: d87beb74 ("iommu/of: Handle PCI aliases properly") Signed-off-by:
Robin Murphy <robin.murphy@arm.com> Tested-by:
Jean-Philippe Brucker <jean-philippe.brucker@arm.com> Signed-off-by:
Joerg Roedel <jroedel@suse.de>
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