[PATCH v2] usb: typec: Add class for plug alt mode device

[Prashant Malani]

Add the Type C class for plug alternate mode devices which are being
registered by the Type C connector class. This ensures that udev events
get generated when the plug alt modes are registered.

Signed-off-by: Prashant Malani <pmalani@xxxxxxxxxxxx>
Cc: Heikki Krogerus <heikki.krogerus@xxxxxxxxxxxxxxx>
---

Changes in v2:
- Changed code to set the class member instead of bus.
- Removed the alteration to typec_bus.rst since it's not longer
  required.
- Updated the commit message and subject to reflect the change in code.

v1: https://lore.kernel.org/linux-usb/20201203030846.51669-1-pmalani@xxxxxxxxxxxx/

 drivers/usb/typec/class.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/usb/typec/class.c b/drivers/usb/typec/class.c
index 35eec707cb51..29d05b45cc9d 100644
--- a/drivers/usb/typec/class.c
+++ b/drivers/usb/typec/class.c
@@ -482,6 +482,10 @@ typec_register_altmode(struct device *parent,
 	if (is_typec_partner(parent))
 		alt->adev.dev.bus = &typec_bus;
 
+	/* Plug alt modes need a class to generate udev events. */
+	if (is_typec_plug(parent))
+		alt->adev.dev.class = typec_class;
+
 	ret = device_register(&alt->adev.dev);
 	if (ret) {
 		dev_err(parent, "failed to register alternate mode (%d)\n",
-- 
2.29.2.576.ga3fc446d84-goog