[PATCH] PCI: Add pci shutdown ability

Now pci drivers can know when the system is going down without having to
add a reboot notifier event.

Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

2 files changed, 10 insertions, 0 deletions

diff --git a/drivers/pci/pci-driver.c b/drivers/pci/pci-driver.c
index 37b7961efc44..b42466ccbb30 100644
--- a/drivers/pci/pci-driver.c
+++ b/drivers/pci/pci-driver.c
@@ -318,6 +318,14 @@ static int pci_device_resume(struct device * dev)
         return 0;
 }
 
+static void pci_device_shutdown(struct device *dev)
+{
+        struct pci_dev *pci_dev = to_pci_dev(dev);
+        struct pci_driver *drv = pci_dev->driver;
+
+        if (drv && drv->shutdown)
+                drv->shutdown(pci_dev);
+}
 
 #define kobj_to_pci_driver(obj) container_of(obj, struct device_driver, kobj)
 #define attr_to_driver_attribute(obj) container_of(obj, struct driver_attribute, attr)
@@ -385,6 +393,7 @@ int pci_register_driver(struct pci_driver *drv)
         drv->driver.bus = &pci_bus_type;
         drv->driver.probe = pci_device_probe;
         drv->driver.remove = pci_device_remove;
+        drv->driver.shutdown = pci_device_shutdown,
         drv->driver.owner = drv->owner;
         drv->driver.kobj.ktype = &pci_driver_kobj_type;
         pci_init_dynids(&drv->dynids);
diff --git a/include/linux/pci.h b/include/linux/pci.h
index 3c89148ae28a..cff5ba3ac8ce 100644
--- a/include/linux/pci.h
+++ b/include/linux/pci.h
@@ -671,6 +671,7 @@ struct pci_driver {
         int  (*suspend) (struct pci_dev *dev, pm_message_t state);      /* Device suspended */
         int  (*resume) (struct pci_dev *dev);                   /* Device woken up */
         int  (*enable_wake) (struct pci_dev *dev, pci_power_t state, int enable);   /* Enable wake event */
+        void (*shutdown) (struct pci_dev *dev);
 
         struct device_driver    driver;
         struct pci_dynids dynids;