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[5.5,177/399] PCI/ATS: Restore EXPORT_SYMBOL_GPL() for pci_{enable,disable}_ats()

Message ID 20200221072419.893783395@linuxfoundation.org
State New
Headers show
Series None | expand

Commit Message

Greg KH Feb. 21, 2020, 7:38 a.m. UTC 
From: Greg Kroah-Hartman <gregkh@google.com>

[ Upstream commit bb950bca5d522119f8b9ce3f6cbac4841c6d6517 ]

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>
Tested-by: John Garry <john.garry@huawei.com> # smmu v3
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Acked-by: Bjorn Helgaas <bhelgaas@google.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/pci/ats.c | 2 ++
 1 file changed, 2 insertions(+)
diff mbox series

Patch

diff --git a/drivers/pci/ats.c b/drivers/pci/ats.c
index b6f064c885c37..3ef0bb281e7cc 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)
 {