[PATCH] PCI: delete the pci_find_class() function as it's unsafe in hotpluggable systems.

Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>

drivers/pci/search.c

@@ -307,45 +307,6 @@ pci_find_device_reverse(unsigned int vendor, unsigned int device, const struct p
 	return dev;
 }
 
-
-/**
- * pci_find_class - begin or continue searching for a PCI device by class
- * @class: search for a PCI device with this class designation
- * @from: Previous PCI device found in search, or %NULL for new search.
- *
- * Iterates through the list of known PCI devices.  If a PCI device is
- * found with a matching @class, a pointer to its device structure is
- * returned.  Otherwise, %NULL is returned.
- * A new search is initiated by passing %NULL to the @from argument.
- * Otherwise if @from is not %NULL, searches continue from next device
- * on the global list.
- *
- * NOTE: Do not use this function anymore, use pci_get_class() instead, as
- * the pci device returned by this function can disappear at any moment in
- * time.
- */
-struct pci_dev *
-pci_find_class(unsigned int class, const struct pci_dev *from)
-{
-	struct list_head *n;
-	struct pci_dev *dev;
-
-	WARN_ON(in_interrupt());
-	spin_lock(&pci_bus_lock);
-	n = from ? from->global_list.next : pci_devices.next;
-
-	while (n && (n != &pci_devices)) {
-		dev = pci_dev_g(n);
-		if (dev->class == class)
-			goto exit;
-		n = n->next;
-	}
-	dev = NULL;
-exit:
-	spin_unlock(&pci_bus_lock);
-	return dev;
-}
-
 /**
  * pci_get_class - begin or continue searching for a PCI device by class
  * @class: search for a PCI device with this class designation
@@ -384,7 +345,6 @@ struct pci_dev *pci_get_class(unsigned int class, struct pci_dev *from)
 }
 
 EXPORT_SYMBOL(pci_find_bus);
-EXPORT_SYMBOL(pci_find_class);
 EXPORT_SYMBOL(pci_find_device);
 EXPORT_SYMBOL(pci_find_device_reverse);
 EXPORT_SYMBOL(pci_find_slot);

include/linux/pci.h

@@ -719,7 +719,6 @@ extern void pci_remove_bus_device(struct pci_dev *dev);
 
 struct pci_dev *pci_find_device (unsigned int vendor, unsigned int device, const struct pci_dev *from);
 struct pci_dev *pci_find_device_reverse (unsigned int vendor, unsigned int device, const struct pci_dev *from);
-struct pci_dev *pci_find_class (unsigned int class, const struct pci_dev *from);
 struct pci_dev *pci_find_slot (unsigned int bus, unsigned int devfn);
 int pci_find_capability (struct pci_dev *dev, int cap);
 int pci_find_ext_capability (struct pci_dev *dev, int cap);
@@ -880,9 +879,6 @@ _PCI_NOP_ALL(write,)
 static inline struct pci_dev *pci_find_device(unsigned int vendor, unsigned int device, const struct pci_dev *from)
 { return NULL; }
 
-static inline struct pci_dev *pci_find_class(unsigned int class, const struct pci_dev *from)
-{ return NULL; }
-
 static inline struct pci_dev *pci_find_slot(unsigned int bus, unsigned int devfn)
 { return NULL; }