[PATCH] PCI: don't override drv->shutdown unconditionally

[Greg KH <gregkh@suse.de>]

There are many drivers that have been setting the generic driver
model level shutdown callback, and pci thus must not override it.

Without this patch we can have really bad data loss on various
raid controllers.


From: Christoph Hellwig <hch@lst.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>


---
 drivers/pci/pci-driver.c |    5 ++++-
 1 files changed, 4 insertions(+), 1 deletion(-)

--- gregkh-2.6.orig/drivers/pci/pci-driver.c	2005-06-16 15:19:44.000000000 -0700
+++ gregkh-2.6/drivers/pci/pci-driver.c	2005-06-17 12:17:34.000000000 -0700
@@ -395,7 +395,10 @@
 	drv->driver.bus = &pci_bus_type;
 	drv->driver.probe = pci_device_probe;
 	drv->driver.remove = pci_device_remove;
-	drv->driver.shutdown = pci_device_shutdown,
+	/* FIXME, once all of the existing PCI drivers have been fixed to set
+	 * the pci shutdown function, this test can go away. */
+	if (!drv->driver.shutdown)
+		drv->driver.shutdown = pci_device_shutdown,
 	drv->driver.owner = drv->owner;
 	drv->driver.kobj.ktype = &pci_driver_kobj_type;
 	pci_init_dynids(&drv->dynids);