diff mbox series

[v1,2/4] driver core: Look for waiting consumers only for a fwnode's primary device

Message ID 20200515053500.215929-3-saravanak@google.com
State New
Headers show
Series Optimize fw_devlink parsing | expand

Commit Message

Saravana Kannan May 15, 2020, 5:34 a.m. UTC 
Commit 4dbe191c046e ("driver core: Add device links from fwnode only for
the primary device") skipped linking a fwnode's secondary device to
the suppliers listed in its fwnode.

However, a fwnode's secondary device can't be found using
get_dev_from_fwnode(). So, there's no point in trying to see if devices
waiting for suppliers might want to link to a fwnode's secondary device.

This commit removes that unnecessary step for devices that aren't a
fwnode's primary device and also moves the code to a more appropriate
part of the file.

Signed-off-by: Saravana Kannan <saravanak@google.com>
---
 drivers/base/core.c | 29 ++++++++++++++++++-----------
 1 file changed, 18 insertions(+), 11 deletions(-)
diff mbox series

Patch

diff --git a/drivers/base/core.c b/drivers/base/core.c
index 2b454aae64b5..f585d92e09d0 100644
--- a/drivers/base/core.c
+++ b/drivers/base/core.c
@@ -1173,6 +1173,21 @@  static bool fw_devlink_is_permissive(void)
 	return fw_devlink_flags == DL_FLAG_SYNC_STATE_ONLY;
 }
 
+static void fw_devlink_link_device(struct device *dev)
+{
+	int fw_ret;
+
+	device_link_add_missing_supplier_links();
+
+	if (fw_devlink_flags && fwnode_has_op(dev->fwnode, add_links)) {
+		fw_ret = fwnode_call_int_op(dev->fwnode, add_links, dev);
+		if (fw_ret == -ENODEV && !fw_devlink_is_permissive())
+			device_link_wait_for_mandatory_supplier(dev);
+		else if (fw_ret)
+			device_link_wait_for_optional_supplier(dev);
+	}
+}
+
 /* Device links support end. */
 
 int (*platform_notify)(struct device *dev) = NULL;
@@ -2407,7 +2422,7 @@  int device_add(struct device *dev)
 	struct device *parent;
 	struct kobject *kobj;
 	struct class_interface *class_intf;
-	int error = -EINVAL, fw_ret;
+	int error = -EINVAL;
 	struct kobject *glue_dir = NULL;
 	bool is_fwnode_dev = false;
 
@@ -2524,16 +2539,8 @@  int device_add(struct device *dev)
 	 * waiting consumers can link to it before the driver is bound to the
 	 * device and the driver sync_state callback is called for this device.
 	 */
-	device_link_add_missing_supplier_links();
-
-	if (fw_devlink_flags && is_fwnode_dev &&
-	    fwnode_has_op(dev->fwnode, add_links)) {
-		fw_ret = fwnode_call_int_op(dev->fwnode, add_links, dev);
-		if (fw_ret == -ENODEV && !fw_devlink_is_permissive())
-			device_link_wait_for_mandatory_supplier(dev);
-		else if (fw_ret)
-			device_link_wait_for_optional_supplier(dev);
-	}
+	if (is_fwnode_dev)
+		fw_devlink_link_device(dev);
 
 	bus_probe_device(dev);
 	if (parent)