Commit bb950bca authored by Greg Kroah-Hartman's avatar Greg Kroah-Hartman Committed by Joerg Roedel
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PCI/ATS: Restore EXPORT_SYMBOL_GPL() for pci_{enable,disable}_ats() 



Commit d355bb20 ("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: default avatarGreg Kroah-Hartman <gregkh@google.com>
[will: rewrote commit message]
Signed-off-by: default avatarWill Deacon <will@kernel.org>
Tested-by: John Garry <john.garry@huawei.com> # smmu v3
Reviewed-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Acked-by: default avatarBjorn Helgaas <bhelgaas@google.com>
Signed-off-by: default avatarJoerg Roedel <jroedel@suse.de>
parent 6bf6c247

drivers/pci/ats.c

+2 −0
Original line number Diff line number Diff line
@@ -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)

{