[PATCH v2 3/3] platform/x86: lenovo-yoga-tab2-pro-1380-fastcharger: Bind through normal serdev matching

[ChunAn Wu <an.wu@canonical.com>]

The software-node-backed serdev client cannot match through ACPI or
device tree and is force-attached.

Set its name before adding it so the serdev core matches it normally.
Deferred probing is then handled by the driver core.

Signed-off-by: ChunAn Wu <an.wu@canonical.com>
---
 .../lenovo/yoga-tab2-pro-1380-fastcharger.c   | 21 ++++++-------------
 1 file changed, 6 insertions(+), 15 deletions(-)

diff --git a/drivers/platform/x86/lenovo/yoga-tab2-pro-1380-fastcharger.c b/drivers/platform/x86/lenovo/yoga-tab2-pro-1380-fastcharger.c
index 8551ab4d2c7d..2eee9ecbcae7 100644
--- a/drivers/platform/x86/lenovo/yoga-tab2-pro-1380-fastcharger.c
+++ b/drivers/platform/x86/lenovo/yoga-tab2-pro-1380-fastcharger.c
@@ -260,25 +260,14 @@ static int yt2_1380_fc_pdev_probe(struct platform_device *pdev)
 	/* The fwnode is a managed node, so it will be auto-put on serdev_device_put() */
 	fwnode_handle_get(dev_fwnode(&serdev->dev));
 
+	serdev_device_set_name(serdev, KBUILD_MODNAME);
+
 	ret = serdev_device_add(serdev);
 	if (ret) {
 		serdev_device_put(serdev);
 		return dev_err_probe(&pdev->dev, ret, "adding serdev\n");
 	}
 
-	/*
-	 * serdev device <-> driver matching relies on OF or ACPI matches and
-	 * neither is available here, manually bind the driver.
-	 */
-	ret = device_driver_attach(&yt2_1380_fc_serdev_driver.driver, &serdev->dev);
-	if (ret) {
-		/* device_driver_attach() maps EPROBE_DEFER to EAGAIN, map it back */
-		serdev_device_remove(serdev);
-		return dev_err_probe(&pdev->dev,
-				     (ret == -EAGAIN) ? -EPROBE_DEFER : ret,
-				     "attaching serdev driver\n");
-	}
-
 	/* So that yt2_1380_fc_pdev_remove() can remove the serdev */
 	platform_set_drvdata(pdev, serdev);
 	return 0;
@@ -305,8 +294,10 @@ static int __init yt2_1380_fc_module_init(void)
 	int ret;
 
 	/*
-	 * serdev driver MUST be registered first because pdev driver calls
-	 * device_driver_attach() on the serdev, serdev-driver pair.
+	 * Register the serdev driver first, so that the serdev device added
+	 * by the pdev driver's probe() matches it and gets probed. serdev
+	 * drivers are probed asynchronously, so that probe may still be
+	 * running when the pdev probe() returns.
 	 */
 	ret = serdev_device_driver_register(&yt2_1380_fc_serdev_driver);
 	if (ret)
-- 
2.34.1