linux-kernel - [PATCH] PCI: Remove fixed parameter in pci_iov_resource

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Date:	Thu, 30 Oct 2014 15:28:17 -0600
From:	Myron Stowe <myron.stowe@...hat.com>
To:	bhelgaas@...gle.com, linux-pci@...r.kernel.org
Cc:	chrisw@...s-sol.org, ddutile@...hat.com,
	linux-kernel@...r.kernel.org, yuzhao@...gle.com
Subject: [PATCH] PCI: Remove fixed parameter in pci_iov_resource_bar()

pci_iov_resource_bar() always sets its 'pci_bar_type' parameter to
'pci_bar_unknown'.  Drop the parameter and just use 'pci_bar_unknown'
directly in the callers.

No functional change intended.

Signed-off-by: Myron Stowe <myron.stowe@...hat.com>
Cc: Chris Wright <chrisw@...s-sol.org>
Cc: Yu Zhao <yuzhao@...gle.com>
---
 drivers/pci/iov.c |   11 +++--------
 drivers/pci/pci.c |    3 ++-
 drivers/pci/pci.h |    3 +--
 3 files changed, 6 insertions(+), 11 deletions(-)

diff --git a/drivers/pci/iov.c b/drivers/pci/iov.c
index 4d109c0..4b3a4ea 100644
--- a/drivers/pci/iov.c
+++ b/drivers/pci/iov.c
@@ -479,20 +479,16 @@ void pci_iov_release(struct pci_dev *dev)
  * pci_iov_resource_bar - get position of the SR-IOV BAR
  * @dev: the PCI device
  * @resno: the resource number
- * @type: the BAR type to be filled in
  *
  * Returns position of the BAR encapsulated in the SR-IOV capability.
  */
-int pci_iov_resource_bar(struct pci_dev *dev, int resno,
-			 enum pci_bar_type *type)
+int pci_iov_resource_bar(struct pci_dev *dev, int resno)
 {
 	if (resno < PCI_IOV_RESOURCES || resno > PCI_IOV_RESOURCE_END)
 		return 0;
 
 	BUG_ON(!dev->is_physfn);
 
-	*type = pci_bar_unknown;
-
 	return dev->sriov->pos + PCI_SRIOV_BAR +
 		4 * (resno - PCI_IOV_RESOURCES);
 }
@@ -510,13 +506,12 @@ int pci_iov_resource_bar(struct pci_dev *dev, int resno,
 resource_size_t pci_sriov_resource_alignment(struct pci_dev *dev, int resno)
 {
 	struct resource tmp;
-	enum pci_bar_type type;
-	int reg = pci_iov_resource_bar(dev, resno, &type);
+	int reg = pci_iov_resource_bar(dev, resno);
 
 	if (!reg)
 		return 0;
 
-	 __pci_read_base(dev, type, &tmp, reg);
+	 __pci_read_base(dev, pci_bar_unknown, &tmp, reg);
 	return resource_alignment(&tmp);
 }
 
diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c
index 625a4ac..7bf2465 100644
--- a/drivers/pci/pci.c
+++ b/drivers/pci/pci.c
@@ -4180,7 +4180,8 @@ int pci_resource_bar(struct pci_dev *dev, int resno, enum pci_bar_type *type)
 		return dev->rom_base_reg;
 	} else if (resno < PCI_BRIDGE_RESOURCES) {
 		/* device specific resource */
-		reg = pci_iov_resource_bar(dev, resno, type);
+		*type = pci_bar_unknown;
+		reg = pci_iov_resource_bar(dev, resno);
 		if (reg)
 			return reg;
 	}
diff --git a/drivers/pci/pci.h b/drivers/pci/pci.h
index 0601890..e0b5f17 100644
--- a/drivers/pci/pci.h
+++ b/drivers/pci/pci.h
@@ -251,8 +251,7 @@ static inline void pci_restore_ats_state(struct pci_dev *dev)
 #ifdef CONFIG_PCI_IOV
 int pci_iov_init(struct pci_dev *dev);
 void pci_iov_release(struct pci_dev *dev);
-int pci_iov_resource_bar(struct pci_dev *dev, int resno,
-			 enum pci_bar_type *type);
+int pci_iov_resource_bar(struct pci_dev *dev, int resno);
 resource_size_t pci_sriov_resource_alignment(struct pci_dev *dev, int resno);
 void pci_restore_iov_state(struct pci_dev *dev);
 int pci_iov_bus_range(struct pci_bus *bus);

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