Merge branches 'battery', 'bugzilla-14667', 'bugzilla-15096', 'bugzilla-15480', ...

[~andy/linux] / drivers / pci / iov.c

diff --git a/drivers/pci/iov.c b/drivers/pci/iov.c
index b2a448e19fe66e0dc6c90693b6fbd8a7c85a6e4b..ce6a3666b3d9878f70be6fb65f3e1272fdf6b6b2 100644 (file)
--- a/drivers/pci/iov.c
+++ b/drivers/pci/iov.c
@@ -9,6 +9,7 @@
  */
 
 #include <linux/pci.h>
+#include <linux/slab.h>
 #include <linux/mutex.h>
 #include <linux/string.h>
 #include <linux/delay.h>
@@ -706,6 +707,21 @@ irqreturn_t pci_sriov_migration(struct pci_dev *dev)
 }
 EXPORT_SYMBOL_GPL(pci_sriov_migration);
 
+/**
+ * pci_num_vf - return number of VFs associated with a PF device_release_driver
+ * @dev: the PCI device
+ *
+ * Returns number of VFs, or 0 if SR-IOV is not enabled.
+ */
+int pci_num_vf(struct pci_dev *dev)
+{
+       if (!dev || !dev->is_physfn)
+               return 0;
+       else
+               return dev->sriov->nr_virtfn;
+}
+EXPORT_SYMBOL_GPL(pci_num_vf);
+
 static int ats_alloc_one(struct pci_dev *dev, int ps)
 {
        int pos;