PCI: endpoint: Make ->remove() callback optional

Make ->remove() callback optional so that endpoint function drivers don't
have to populate empty ->remove() callback functions.

Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>

diff --git a/drivers/pci/endpoint/pci-epf-core.c b/drivers/pci/endpoint/pci-epf-core.c
index f14e2be..70eccc0 100644 (file)
--- a/drivers/pci/endpoint/pci-epf-core.c
+++ b/drivers/pci/endpoint/pci-epf-core.c
@@ -333,11 +333,12 @@ static int pci_epf_device_probe(struct device *dev)
 
 static int pci_epf_device_remove(struct device *dev)
 {
-       int ret;
+       int ret = 0;
        struct pci_epf *epf = to_pci_epf(dev);
        struct pci_epf_driver *driver = to_pci_epf_driver(dev->driver);
 
-       ret = driver->remove(epf);
+       if (driver->remove)
+               ret = driver->remove(epf);
        epf->driver = NULL;
 
        return ret;