linux-kernel - [PATCH 1/3] PCI/ATS: Remove unused PRI and PASID stubs

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Message-Id: <20191009225354.181018-2-helgaas@kernel.org>
Date:   Wed,  9 Oct 2019 17:53:52 -0500
From:   Bjorn Helgaas <helgaas@...nel.org>
To:     linux-pci@...r.kernel.org
Cc:     Kuppuswamy Sathyanarayanan 
        <sathyanarayanan.kuppuswamy@...ux.intel.com>,
        Ashok Raj <ashok.raj@...el.com>,
        Keith Busch <keith.busch@...el.com>,
        linux-kernel@...r.kernel.org,
        David Woodhouse <dwmw2@...radead.org>,
        Joerg Roedel <joro@...tes.org>,
        iommu@...ts.linux-foundation.org,
        Krzysztof Wilczynski <kw@...ux.com>,
        Bjorn Helgaas <bhelgaas@...gle.com>
Subject: [PATCH 1/3] PCI/ATS: Remove unused PRI and PASID stubs

From: Bjorn Helgaas <bhelgaas@...gle.com>

The following functions are only used by amd_iommu.c and intel-iommu.c
(when CONFIG_INTEL_IOMMU_SVM is enabled).  CONFIG_PCI_PRI and
CONFIG_PCI_PASID are always defined in those cases, so there's no need for
the stubs.

  pci_enable_pri()
  pci_disable_pri()
  pci_reset_pri()
  pci_prg_resp_pasid_required()
  pci_enable_pasid()
  pci_disable_pasid()

Remove the unused stubs.

Signed-off-by: Bjorn Helgaas <bhelgaas@...gle.com>
---
 include/linux/pci-ats.h | 10 ----------
 1 file changed, 10 deletions(-)

diff --git a/include/linux/pci-ats.h b/include/linux/pci-ats.h
index 67de3a9499bb..963c11f7c56b 100644
--- a/include/linux/pci-ats.h
+++ b/include/linux/pci-ats.h
@@ -27,14 +27,7 @@ void pci_restore_pri_state(struct pci_dev *pdev);
 int pci_reset_pri(struct pci_dev *pdev);
 int pci_prg_resp_pasid_required(struct pci_dev *pdev);
 #else /* CONFIG_PCI_PRI */
-static inline int pci_enable_pri(struct pci_dev *pdev, u32 reqs)
-{ return -ENODEV; }
-static inline void pci_disable_pri(struct pci_dev *pdev) { }
 static inline void pci_restore_pri_state(struct pci_dev *pdev) { }
-static inline int pci_reset_pri(struct pci_dev *pdev)
-{ return -ENODEV; }
-static inline int pci_prg_resp_pasid_required(struct pci_dev *pdev)
-{ return 0; }
 #endif /* CONFIG_PCI_PRI */
 
 #ifdef CONFIG_PCI_PASID
@@ -44,9 +37,6 @@ void pci_restore_pasid_state(struct pci_dev *pdev);
 int pci_pasid_features(struct pci_dev *pdev);
 int pci_max_pasids(struct pci_dev *pdev);
 #else /* CONFIG_PCI_PASID */
-static inline int pci_enable_pasid(struct pci_dev *pdev, int features)
-{ return -EINVAL; }
-static inline void pci_disable_pasid(struct pci_dev *pdev) { }
 static inline void pci_restore_pasid_state(struct pci_dev *pdev) { }
 static inline int pci_pasid_features(struct pci_dev *pdev)
 { return -EINVAL; }
-- 
2.23.0.581.g78d2f28ef7-goog