PCI: Add pcibios_release_device()

Platforms may want to provide architecture-specific functionality when
a PCI device is released.  Add a pcibios_release_device() call that
architectures can override to do so.

Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>

2 files changed, 11 insertions, 0 deletions

diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c
index e5f4e55..709791b 100644
--- a/drivers/pci/pci.c
+++ b/drivers/pci/pci.c
@@ -1335,6 +1335,16 @@ int __weak pcibios_add_device (struct pci_dev *dev)
 }
 
 /**
+ * pcibios_release_device - provide arch specific hooks when releasing device dev
+ * @dev: the PCI device being released
+ *
+ * Permits the platform to provide architecture specific functionality when
+ * devices are released. This is the default implementation. Architecture
+ * implementations can override this.
+ */
+void __weak pcibios_release_device(struct pci_dev *dev) {}
+
+/**
  * pcibios_disable_device - disable arch specific PCI resources for device dev
  * @dev: the PCI device to disable
  *
diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c
index 70f10fa..58cc0a8 100644
--- a/drivers/pci/probe.c
+++ b/drivers/pci/probe.c
@@ -1132,6 +1132,7 @@ static void pci_release_dev(struct device *dev)
 	pci_dev = to_pci_dev(dev);
 	pci_release_capabilities(pci_dev);
 	pci_release_of_node(pci_dev);
+	pcibios_release_device(pci_dev);
 	kfree(pci_dev);
 }