[PATCH V9 01/11] PCI/IOV: Rename and export virtfn_add/virtfn_remove

[Wei Yang]

During EEH recovery, hotplug is applied to the devices which don't
have drivers or their drivers don't support EEH. However, the hotplug,
which was implemented based on PCI bus, can't be applied to VF directly.

The patch renames virtn_{add,remove}() and exports them so that they
can be used in PCI hotplug during EEH recovery.

[gwshan: changelog]
Signed-off-by: Wei Yang <weiyang at linux.vnet.ibm.com>
Reviewed-by: Gavin Shan <gwshan at linux.vnet.ibm.com>
Acked-by: Bjorn Helgaas <bhelgaas at google.com>
---
 drivers/pci/iov.c   |   10 +++++-----
 include/linux/pci.h |    8 ++++++++
 2 files changed, 13 insertions(+), 5 deletions(-)

diff --git a/drivers/pci/iov.c b/drivers/pci/iov.c
index ee0ebff..cc941dd 100644
--- a/drivers/pci/iov.c
+++ b/drivers/pci/iov.c
@@ -108,7 +108,7 @@ resource_size_t pci_iov_resource_size(struct pci_dev *dev, int resno)
 	return dev->sriov->barsz[resno - PCI_IOV_RESOURCES];
 }
 
-static int virtfn_add(struct pci_dev *dev, int id, int reset)
+int pci_iov_virtfn_add(struct pci_dev *dev, int id, int reset)
 {
 	int i;
 	int rc = -ENOMEM;
@@ -183,7 +183,7 @@ failed:
 	return rc;
 }
 
-static void virtfn_remove(struct pci_dev *dev, int id, int reset)
+void pci_iov_virtfn_remove(struct pci_dev *dev, int id, int reset)
 {
 	char buf[VIRTFN_ID_LEN];
 	struct pci_dev *virtfn;
@@ -320,7 +320,7 @@ static int sriov_enable(struct pci_dev *dev, int nr_virtfn)
 	}
 
 	for (i = 0; i < initial; i++) {
-		rc = virtfn_add(dev, i, 0);
+		rc = pci_iov_virtfn_add(dev, i, 0);
 		if (rc)
 			goto failed;
 	}
@@ -332,7 +332,7 @@ static int sriov_enable(struct pci_dev *dev, int nr_virtfn)
 
 failed:
 	for (j = 0; j < i; j++)
-		virtfn_remove(dev, j, 0);
+		pci_iov_virtfn_remove(dev, j, 0);
 
 	iov->ctrl &= ~(PCI_SRIOV_CTRL_VFE | PCI_SRIOV_CTRL_MSE);
 	pci_cfg_access_lock(dev);
@@ -361,7 +361,7 @@ static void sriov_disable(struct pci_dev *dev)
 		return;
 
 	for (i = 0; i < iov->num_VFs; i++)
-		virtfn_remove(dev, i, 0);
+		pci_iov_virtfn_remove(dev, i, 0);
 
 	pcibios_sriov_disable(dev);
 
diff --git a/include/linux/pci.h b/include/linux/pci.h
index 8a0321a..3fed437 100644
--- a/include/linux/pci.h
+++ b/include/linux/pci.h
@@ -1668,6 +1668,8 @@ int pci_iov_virtfn_devfn(struct pci_dev *dev, int id);
 
 int pci_enable_sriov(struct pci_dev *dev, int nr_virtfn);
 void pci_disable_sriov(struct pci_dev *dev);
+int pci_iov_virtfn_add(struct pci_dev *dev, int id, int reset);
+void pci_iov_virtfn_remove(struct pci_dev *dev, int id, int reset);
 int pci_num_vf(struct pci_dev *dev);
 int pci_vfs_assigned(struct pci_dev *dev);
 int pci_sriov_set_totalvfs(struct pci_dev *dev, u16 numvfs);
@@ -1685,6 +1687,12 @@ static inline int pci_iov_virtfn_devfn(struct pci_dev *dev, int id)
 static inline int pci_enable_sriov(struct pci_dev *dev, int nr_virtfn)
 { return -ENODEV; }
 static inline void pci_disable_sriov(struct pci_dev *dev) { }
+static inline int pci_iov_virtfn_add(struct pci_dev *dev, int id, int reset)
+{
+	return -ENOSYS;
+}
+static inline void pci_iov_virtfn_remove(struct pci_dev *dev, int id, int reset)
+{ }
 static inline int pci_num_vf(struct pci_dev *dev) { return 0; }
 static inline int pci_vfs_assigned(struct pci_dev *dev)
 { return 0; }
-- 
1.7.9.5