linux-kernel - [PATCH] ACPI/IORT: Fix build without CONFIG_IOMMU

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Message-Id: <20190520065746.17068-1-hch@lst.de>
Date:   Mon, 20 May 2019 08:57:46 +0200
From:   Christoph Hellwig <hch@....de>
To:     will.deacon@....com
Cc:     jean-philippe.brucker@....com, lorenzo.pieralisi@....com,
        linux-acpi@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH] ACPI/IORT: Fix build without CONFIG_IOMMU_API

IOMMU_FWSPEC_PCI_RC_ATS is only defined if CONFIG_IOMMU_API is
enabled.

Fixes: 5702ee24182f ("ACPI/IORT: Check ATS capability in root complex nodes")
Signed-off-by: Christoph Hellwig <hch@....de>
---
 drivers/acpi/arm64/iort.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/acpi/arm64/iort.c b/drivers/acpi/arm64/iort.c
index 9058cb084b91..3e542b5d2a2d 100644
--- a/drivers/acpi/arm64/iort.c
+++ b/drivers/acpi/arm64/iort.c
@@ -1074,9 +1074,10 @@ const struct iommu_ops *iort_iommu_configure(struct device *dev)
 		info.node = node;
 		err = pci_for_each_dma_alias(to_pci_dev(dev),
 					     iort_pci_iommu_init, &info);
-
+#ifdef CONFIG_IOMMU_API
 		if (!err && iort_pci_rc_supports_ats(node))
 			dev->iommu_fwspec->flags |= IOMMU_FWSPEC_PCI_RC_ATS;
+#endif
 	} else {
 		int i = 0;
 
-- 
2.20.1