linux-kernel - [PATCH 2/2] ACPI/IORT: Let pci_fixup_final access iommu

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Date:   Tue, 12 May 2020 12:08:31 +0800
From:   Zhangfei Gao <zhangfei.gao@...aro.org>
To:     Joerg Roedel <joro@...tes.org>,
        Lorenzo Pieralisi <lorenzo.pieralisi@....com>,
        Hanjun Guo <guohanjun@...wei.com>,
        Sudeep Holla <sudeep.holla@....com>,
        "Rafael J. Wysocki" <rjw@...ysocki.net>,
        Len Brown <lenb@...nel.org>,
        jean-philippe <jean-philippe@...aro.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Herbert Xu <herbert@...dor.apana.org.au>,
        kenneth-lee-2012@...mail.com, Wangzhou <wangzhou1@...ilicon.com>
Cc:     linux-kernel@...r.kernel.org, linux-crypto@...r.kernel.org,
        iommu@...ts.linux-foundation.org, linux-acpi@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        Zhangfei Gao <zhangfei.gao@...aro.org>
Subject: [PATCH 2/2] ACPI/IORT: Let pci_fixup_final access iommu_fwnode

Calling pci_fixup_final after iommu_fwspec_init, which alloc
iommu_fwnode. Some platform devices appear as PCI but are
actually on the AMBA bus, and they need fixup in
drivers/pci/quirks.c handling iommu_fwnode.
So calling pci_fixup_final after iommu_fwnode is allocated.

Signed-off-by: Zhangfei Gao <zhangfei.gao@...aro.org>
---
 drivers/acpi/arm64/iort.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/acpi/arm64/iort.c b/drivers/acpi/arm64/iort.c
index 7d04424..02e361d 100644
--- a/drivers/acpi/arm64/iort.c
+++ b/drivers/acpi/arm64/iort.c
@@ -1027,6 +1027,7 @@ 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);
+		pci_fixup_device(pci_fixup_final, to_pci_dev(dev));
 
 		fwspec = dev_iommu_fwspec_get(dev);
 		if (fwspec && iort_pci_rc_supports_ats(node))
-- 
2.7.4