dmaengine: sh: rcar-dmac: Use device_iommu_mapped()

Use Use device_iommu_mapped() to check if the device is
already mapped by an IOMMU.

Acked-by: Vinod Koul <vkoul@kernel.org>
Signed-off-by: Joerg Roedel <jroedel@suse.de>

diff --git a/drivers/dma/sh/rcar-dmac.c b/drivers/dma/sh/rcar-dmac.c
index 74fa2b1..2b4f256 100644 (file)
--- a/drivers/dma/sh/rcar-dmac.c
+++ b/drivers/dma/sh/rcar-dmac.c
@@ -1809,7 +1809,7 @@ static int rcar_dmac_probe(struct platform_device *pdev)
         * level we can't disable it selectively, so ignore channel 0 for now if
         * the device is part of an IOMMU group.
         */
-       if (pdev->dev.iommu_group) {
+       if (device_iommu_mapped(&pdev->dev)) {
                dmac->n_channels--;
                channels_offset = 1;
        }