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From: Joerg Roedel <jroedel@suse.de> mainline inclusion from mainline-v4.20-rc1 commit f884f6ee62604aec60fe1760f94724be192d97c0 category:feature bugzilla:NA CVE:NA ------------------- 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> Signed-off-by: Chen Jun <chenjun102@huawei.com> Reviewed-by: Hanjun Guo <guohanjun@huawei.com> Signed-off-by: Yang Yingliang <yangyingliang@huawei.com> --- drivers/dma/sh/rcar-dmac.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/dma/sh/rcar-dmac.c b/drivers/dma/sh/rcar-dmac.c index 80ff95f75199..bcefcc8704ef 100644 --- a/drivers/dma/sh/rcar-dmac.c +++ b/drivers/dma/sh/rcar-dmac.c @@ -1831,7 +1831,7 @@ 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; } -- 2.25.1