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Subject[PATCH 3/5] xen/pciback: Move the PCI_DEV_FLAGS_ASSIGNED ops to the "[un|]bind"
Date
operation instead of doing it per guest creation/disconnection. Without
this we could have potentially unloaded the vf driver from the
xen pciback control even if the driver was binded to the xen-pciback.
This will hold on to it until the user "unbind"s the PCI device using
SysFS.

Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
---
drivers/xen/xen-pciback/pci_stub.c | 2 ++
drivers/xen/xen-pciback/xenbus.c | 2 --
2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/xen/xen-pciback/pci_stub.c b/drivers/xen/xen-pciback/pci_stub.c
index 0ce0dc6..d66328e 100644
--- a/drivers/xen/xen-pciback/pci_stub.c
+++ b/drivers/xen/xen-pciback/pci_stub.c
@@ -114,6 +114,7 @@ static void pcistub_device_release(struct kref *kref)
xen_pcibk_config_free_dyn_fields(psdev->dev);
xen_pcibk_config_free_dev(psdev->dev);

+ psdev->dev->dev_flags &= ~PCI_DEV_FLAGS_ASSIGNED;
pci_dev_put(psdev->dev);

kfree(psdev);
@@ -366,6 +367,7 @@ static int __devinit pcistub_init_device(struct pci_dev *dev)
dev_dbg(&dev->dev, "reset device\n");
xen_pcibk_reset_device(dev);

+ dev->dev_flags |= PCI_DEV_FLAGS_ASSIGNED;
return 0;

config_release:
diff --git a/drivers/xen/xen-pciback/xenbus.c b/drivers/xen/xen-pciback/xenbus.c
index 0755259..474d52e 100644
--- a/drivers/xen/xen-pciback/xenbus.c
+++ b/drivers/xen/xen-pciback/xenbus.c
@@ -241,7 +241,6 @@ static int xen_pcibk_export_device(struct xen_pcibk_device *pdev,
goto out;

dev_dbg(&dev->dev, "registering for %d\n", pdev->xdev->otherend_id);
- dev->dev_flags |= PCI_DEV_FLAGS_ASSIGNED;
if (xen_register_device_domain_owner(dev,
pdev->xdev->otherend_id) != 0) {
dev_err(&dev->dev, "device has been assigned to another " \
@@ -281,7 +280,6 @@ static int xen_pcibk_remove_device(struct xen_pcibk_device *pdev,
}

dev_dbg(&dev->dev, "unregistering for %d\n", pdev->xdev->otherend_id);
- dev->dev_flags &= ~PCI_DEV_FLAGS_ASSIGNED;
xen_unregister_device_domain_owner(dev);

xen_pcibk_release_pci_dev(pdev, dev);
--
1.7.7.4


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