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[RFC,10/21] PCI: endpoint: Make pci_epf_driver ops optional

Message ID 20190926112933.8922-11-kishon@ti.com
State New
Delegated to: Lorenzo Pieralisi
Headers show
Series Implement NTB Controller using multiple PCI | expand

Commit Message

Kishon Vijay Abraham I Sept. 26, 2019, 11:29 a.m. UTC
pci_epf_driver had two ops for bind and unbind which will be invoked
when an endpoint controller is bound to an endpoint function (using
configfs). Now that endpoint core has support to define an endpoint
function using device tree alone, the bind and unbind ops can be
optional. Make pci_epf_driver ops optional here.

Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
 drivers/pci/endpoint/pci-epf-core.c | 8 +++-----
 1 file changed, 3 insertions(+), 5 deletions(-)
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diff --git a/drivers/pci/endpoint/pci-epf-core.c b/drivers/pci/endpoint/pci-epf-core.c
index c74c7cc6d8bd..67015c66d09f 100644
--- a/drivers/pci/endpoint/pci-epf-core.c
+++ b/drivers/pci/endpoint/pci-epf-core.c
@@ -446,11 +446,9 @@  int __pci_epf_register_driver(struct pci_epf_driver *driver,
 	int ret;
-	if (!driver->ops)
-		return -EINVAL;
-	if (!driver->ops->bind || !driver->ops->unbind)
-		return -EINVAL;
+	if (!driver->ops || !driver->ops->bind || !driver->ops->unbind)
+		pr_debug("%s: Supports only pci_epf device created using DT\n",
+			 driver->driver.name);
 	driver->driver.bus = &pci_epf_bus_type;
 	driver->driver.owner = owner;