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>

diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c
index e5f4e55d407d41d6b90b2b49b7b3022426d32fca..709791b70ca0548cbb74fc52dcba99f163ed8728 100644 (file)
--- a/drivers/pci/pci.c
+++ b/drivers/pci/pci.c
@@ -1334,6 +1334,16 @@ int __weak pcibios_add_device (struct pci_dev *dev)
        return 0;
 }
 
+/**
+ * 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 70f10fa3c1b216ab88e04471c171d8404f107770..58cc0a8a097945c4c62b6976fd13d808be53d29b 100644 (file)
--- 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);
 }
 

diff --git a/include/linux/pci.h b/include/linux/pci.h
index 3a24e4ff32481898f5009c2a162c9a7f33d0222e..8f170e9073a5f515212453ccd32231ad90ea9214 100644 (file)
--- a/include/linux/pci.h
+++ b/include/linux/pci.h
@@ -1643,6 +1643,7 @@ void pcibios_set_master(struct pci_dev *dev);
 int pcibios_set_pcie_reset_state(struct pci_dev *dev,
                                 enum pcie_reset_state state);
 int pcibios_add_device(struct pci_dev *dev);
+void pcibios_release_device(struct pci_dev *dev);
 
 #ifdef CONFIG_PCI_MMCONFIG
 void __init pci_mmcfg_early_init(void);