[PATCH v1 16/18] efi: Update implementation of add_links() to create fwnode links

Saravana Kannan
2020-11-04T23:25:11Z

The semantics of add_links() has changed from creating device link
between devices to creating fwnode links between fwnodes. So, update the
implementation of add_links() to match the new semantics.

Signed-off-by: Saravana Kannan <saravanak@google.com>
---
drivers/firmware/efi/efi-init.c | 23 ++---------------------
1 file changed, 2 insertions(+), 21 deletions(-)

diff --git a/drivers/firmware/efi/efi-init.c b/drivers/firmware/efi/efi-init.c
index b148f1459fb3..c0c3d4c3837a 100644
--- a/drivers/firmware/efi/efi-init.c
+++ b/drivers/firmware/efi/efi-init.c
@@ -316,11 +316,10 @@ static struct device_node *find_pci_overlap_node(void)
* resource reservation conflict on the memory window that the efifb
* framebuffer steals from the PCIe host bridge.
*/
-static int efifb_add_links(const struct fwnode_handle *fwnode,
+static int efifb_add_links(struct fwnode_handle *fwnode,
struct device *dev)
{
struct device_node *sup_np;
- struct device *sup_dev;

sup_np = find_pci_overlap_node();

@@ -331,27 +330,9 @@ static int efifb_add_links(const struct fwnode_handle *fwnode,
if (!sup_np)
return 0;

- sup_dev = get_dev_from_fwnode(&sup_np->fwnode);
+ fwnode_link_add(fwnode, of_fwnode_handle(sup_np));
of_node_put(sup_np);

- /*
- * Return -ENODEV if the PCI graphics controller device hasn't been
- * registered yet. This ensures that efifb isn't allowed to probe
- * and this function is retried again when new devices are
- * registered.
- */
- if (!sup_dev)
- return -ENODEV;
-
- /*
- * If this fails, retrying this function at a later point won't
- * change anything. So, don't return an error after this.
- */
- if (!device_link_add(dev, sup_dev, fw_devlink_get_flags()))
- dev_warn(dev, "device_link_add() failed\n");
-
- put_device(sup_dev);
-
return 0;
}

--
2.29.1.341.ge80a0c044ae-goog