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Subject[PATCH v4 03/16] PCI/ATS: Restore EXPORT_SYMBOL_GPL() for pci_{enable,disable}_ats()
Date
From: Greg Kroah-Hartman <gregkh@google.com>

Commit d355bb209783 ("PCI/ATS: Remove unnecessary EXPORT_SYMBOL_GPL()")
unexported a bunch of symbols from the PCI core since the only external
users were non-modular IOMMU drivers. Although most of those symbols
can remain private for now, 'pci_{enable,disable_ats()' is required for
the ARM SMMUv3 driver to build as a module, otherwise we get a build
failure as follows:

| ERROR: "pci_enable_ats" [drivers/iommu/arm-smmu-v3.ko] undefined!
| ERROR: "pci_disable_ats" [drivers/iommu/arm-smmu-v3.ko] undefined!

Re-export these two functions so that the ARM SMMUv3 driver can be build
as a module.

Cc: Bjorn Helgaas <bhelgaas@google.com>
Cc: Joerg Roedel <jroedel@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
[will: rewrote commit message]
Signed-off-by: Will Deacon <will@kernel.org>
---
drivers/pci/ats.c | 2 ++
1 file changed, 2 insertions(+)

diff --git a/drivers/pci/ats.c b/drivers/pci/ats.c
index 982b46f0a54d..dcbcf1331bb2 100644
--- a/drivers/pci/ats.c
+++ b/drivers/pci/ats.c
@@ -69,6 +69,7 @@ int pci_enable_ats(struct pci_dev *dev, int ps)
dev->ats_enabled = 1;
return 0;
}
+EXPORT_SYMBOL_GPL(pci_enable_ats);

/**
* pci_disable_ats - disable the ATS capability
@@ -87,6 +88,7 @@ void pci_disable_ats(struct pci_dev *dev)

dev->ats_enabled = 0;
}
+EXPORT_SYMBOL_GPL(pci_disable_ats);

void pci_restore_ats_state(struct pci_dev *dev)
{
--
2.24.1.735.g03f4e72817-goog
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