diff mbox series

[03/60,SRU,OEM-5.6] ACPI/IORT: Remove direct access of dev->iommu_fwspec

Message ID 20200526130204.238445-4-vicamo.yang@canonical.com
State New
Headers show
Series Fix can't find root device on VMD when secureboot enabled | expand

Commit Message

You-Sheng Yang May 26, 2020, 1:01 p.m. UTC 
From: Joerg Roedel <jroedel@suse.de>

BugLink: https://bugs.launchpad.net/bugs/1876707

Use the accessor functions instead of directly dereferencing
dev->iommu_fwspec.

Signed-off-by: Joerg Roedel <jroedel@suse.de>
Tested-by: Hanjun Guo <guohanjun@huawei.com>
Reviewed-by: Jean-Philippe Brucker <jean-philippe@linaro.org>
Link: https://lore.kernel.org/r/20200326150841.10083-3-joro@8bytes.org
(cherry picked from commit 6990ec796a7470740e6fb108dd30948b1ac9beb9)
Signed-off-by: You-Sheng Yang <vicamo.yang@canonical.com>
---
 drivers/acpi/arm64/iort.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)
diff mbox series

Patch

diff --git a/drivers/acpi/arm64/iort.c b/drivers/acpi/arm64/iort.c
index ed3d2d1a7ae9..7d04424189df 100644
--- a/drivers/acpi/arm64/iort.c
+++ b/drivers/acpi/arm64/iort.c
@@ -1015,6 +1015,7 @@  const struct iommu_ops *iort_iommu_configure(struct device *dev)
 		return ops;
 
 	if (dev_is_pci(dev)) {
+		struct iommu_fwspec *fwspec;
 		struct pci_bus *bus = to_pci_dev(dev)->bus;
 		struct iort_pci_alias_info info = { .dev = dev };
 
@@ -1027,8 +1028,9 @@  const struct iommu_ops *iort_iommu_configure(struct device *dev)
 		err = pci_for_each_dma_alias(to_pci_dev(dev),
 					     iort_pci_iommu_init, &info);
 
-		if (!err && iort_pci_rc_supports_ats(node))
-			dev->iommu_fwspec->flags |= IOMMU_FWSPEC_PCI_RC_ATS;
+		fwspec = dev_iommu_fwspec_get(dev);
+		if (fwspec && iort_pci_rc_supports_ats(node))
+			fwspec->flags |= IOMMU_FWSPEC_PCI_RC_ATS;
 	} else {
 		int i = 0;