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The DPRC driver is not taking into account the msi-map property and assumes that the icid is the same as the stream ID. Although this assumption is correct, generalize the code to include a translation between icid and streamID. Furthermore do not just copy the MSI domain from parent (for child containers), but use the information provided by the msi-map property. If the msi-map property is missing from the device tree retain the old behaviour for backward compatibility ie the child DPRC objects inherit the MSI domain from the parent. Signed-off-by: Diana Craciun <diana.craciun@oss.nxp.com> Acked-by: Marc Zyngier <maz@kernel.org> Link: https://lore.kernel.org/r/20200619082013.13661-12-lorenzo.pieralisi@arm.com Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>