linux-kernel - [PATCH 2/3] PCI/ATS: Remove unnecessary EXPORT_SYMBOL

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Message-Id: <20191009225354.181018-3-helgaas@kernel.org>
Date:   Wed,  9 Oct 2019 17:53:53 -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 2/3] PCI/ATS: Remove unnecessary EXPORT_SYMBOL_GPL()

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

The following functions are only used by the PCI core or by IOMMU drivers
that cannot be modular, so there's no need to export them at all:

  pci_enable_ats()
  pci_disable_ats()
  pci_restore_ats_state()
  pci_ats_queue_depth()
  pci_ats_page_aligned()

  pci_enable_pri()
  pci_restore_pri_state()
  pci_reset_pri()
  pci_prg_resp_pasid_required()

  pci_enable_pasid()
  pci_disable_pasid()
  pci_restore_pasid_state()
  pci_pasid_features()
  pci_max_pasids()

Remove the unnecessary EXPORT_SYMBOL_GPL()s.

Signed-off-by: Bjorn Helgaas <bhelgaas@...gle.com>
---
 drivers/pci/ats.c | 14 --------------
 1 file changed, 14 deletions(-)

diff --git a/drivers/pci/ats.c b/drivers/pci/ats.c
index 76ae518d55f4..982b46f0a54d 100644
--- a/drivers/pci/ats.c
+++ b/drivers/pci/ats.c
@@ -69,7 +69,6 @@ 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
@@ -88,7 +87,6 @@ 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)
 {
@@ -102,7 +100,6 @@ void pci_restore_ats_state(struct pci_dev *dev)
 		ctrl |= PCI_ATS_CTRL_STU(dev->ats_stu - PCI_ATS_MIN_STU);
 	pci_write_config_word(dev, dev->ats_cap + PCI_ATS_CTRL, ctrl);
 }
-EXPORT_SYMBOL_GPL(pci_restore_ats_state);
 
 /**
  * pci_ats_queue_depth - query the ATS Invalidate Queue Depth
@@ -129,7 +126,6 @@ int pci_ats_queue_depth(struct pci_dev *dev)
 	pci_read_config_word(dev, dev->ats_cap + PCI_ATS_CAP, &cap);
 	return PCI_ATS_CAP_QDEP(cap) ? PCI_ATS_CAP_QDEP(cap) : PCI_ATS_MAX_QDEP;
 }
-EXPORT_SYMBOL_GPL(pci_ats_queue_depth);
 
 /**
  * pci_ats_page_aligned - Return Page Aligned Request bit status.
@@ -156,7 +152,6 @@ int pci_ats_page_aligned(struct pci_dev *pdev)
 
 	return 0;
 }
-EXPORT_SYMBOL_GPL(pci_ats_page_aligned);
 
 #ifdef CONFIG_PCI_PRI
 void pci_pri_init(struct pci_dev *pdev)
@@ -218,7 +213,6 @@ int pci_enable_pri(struct pci_dev *pdev, u32 reqs)
 
 	return 0;
 }
-EXPORT_SYMBOL_GPL(pci_enable_pri);
 
 /**
  * pci_disable_pri - Disable PRI capability
@@ -271,7 +265,6 @@ void pci_restore_pri_state(struct pci_dev *pdev)
 	pci_write_config_dword(pdev, pri + PCI_PRI_ALLOC_REQ, reqs);
 	pci_write_config_word(pdev, pri + PCI_PRI_CTRL, control);
 }
-EXPORT_SYMBOL_GPL(pci_restore_pri_state);
 
 /**
  * pci_reset_pri - Resets device's PRI state
@@ -299,7 +292,6 @@ int pci_reset_pri(struct pci_dev *pdev)
 
 	return 0;
 }
-EXPORT_SYMBOL_GPL(pci_reset_pri);
 
 /**
  * pci_prg_resp_pasid_required - Return PRG Response PASID Required bit
@@ -315,7 +307,6 @@ int pci_prg_resp_pasid_required(struct pci_dev *pdev)
 
 	return pdev->pasid_required;
 }
-EXPORT_SYMBOL_GPL(pci_prg_resp_pasid_required);
 #endif /* CONFIG_PCI_PRI */
 
 #ifdef CONFIG_PCI_PASID
@@ -373,7 +364,6 @@ int pci_enable_pasid(struct pci_dev *pdev, int features)
 
 	return 0;
 }
-EXPORT_SYMBOL_GPL(pci_enable_pasid);
 
 /**
  * pci_disable_pasid - Disable the PASID capability
@@ -398,7 +388,6 @@ void pci_disable_pasid(struct pci_dev *pdev)
 
 	pdev->pasid_enabled = 0;
 }
-EXPORT_SYMBOL_GPL(pci_disable_pasid);
 
 /**
  * pci_restore_pasid_state - Restore PASID capabilities
@@ -421,7 +410,6 @@ void pci_restore_pasid_state(struct pci_dev *pdev)
 	control = PCI_PASID_CTRL_ENABLE | pdev->pasid_features;
 	pci_write_config_word(pdev, pasid + PCI_PASID_CTRL, control);
 }
-EXPORT_SYMBOL_GPL(pci_restore_pasid_state);
 
 /**
  * pci_pasid_features - Check which PASID features are supported
@@ -450,7 +438,6 @@ int pci_pasid_features(struct pci_dev *pdev)
 
 	return supported;
 }
-EXPORT_SYMBOL_GPL(pci_pasid_features);
 
 #define PASID_NUMBER_SHIFT	8
 #define PASID_NUMBER_MASK	(0x1f << PASID_NUMBER_SHIFT)
@@ -478,5 +465,4 @@ int pci_max_pasids(struct pci_dev *pdev)
 
 	return (1 << supported);
 }
-EXPORT_SYMBOL_GPL(pci_max_pasids);
 #endif /* CONFIG_PCI_PASID */
-- 
2.23.0.581.g78d2f28ef7-goog