1 files changed, 34 insertions, 0 deletions

diff --git a/drivers/pci/legacy.c b/drivers/pci/legacy.c
new file mode 100644
index 000000000000..871f65c15936
--- /dev/null
+++ b/drivers/pci/legacy.c
@@ -0,0 +1,34 @@
+#include <linux/init.h>
+#include <linux/pci.h>
+#include <linux/module.h>
+#include <linux/interrupt.h>
+#include "pci.h"
+
+/**
+ * pci_find_device - begin or continue searching for a PCI device by vendor/device id
+ * @vendor: PCI vendor id to match, or %PCI_ANY_ID to match all vendor ids
+ * @device: PCI device id to match, or %PCI_ANY_ID to match all device ids
+ * @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 @vendor and @device, a pointer to its device structure is
+ * returned.  Otherwise, %NULL is returned.
+ * A new search is initiated by passing %NULL as the @from argument.
+ * Otherwise if @from is not %NULL, searches continue from next device
+ * on the global list.
+ *
+ * NOTE: Do not use this function any more; use pci_get_device() instead, as
+ * the PCI device returned by this function can disappear at any moment in
+ * time.
+ */
+struct pci_dev *pci_find_device(unsigned int vendor, unsigned int device,
+                                struct pci_dev *from)
+{
+        struct pci_dev *pdev;
+
+        pci_dev_get(from);
+        pdev = pci_get_subsys(vendor, device, PCI_ANY_ID, PCI_ANY_ID, from);
+        pci_dev_put(pdev);
+        return pdev;
+}
+EXPORT_SYMBOL(pci_find_device);