usb: typec: add missing uevent when partner support PD

commit 6fb9e1d94789e8ee5a258a23bc588693f743fd6c upstream.

System like Android allow user control power role from UI, it is possible
to implement application base on typec uevent to refresh UI, but found
there is chance that UI show different state from typec attribute file.

In typec_set_pwr_opmode(), when partner support PD, there is no uevent
send to user space which cause the problem.

Fix it by sending uevent notification when change power mode to PD.

Fixes: bdecb33af34f ("usb: typec: API for controlling USB Type-C Multiplexers")
Cc: stable@vger.kernel.org
Signed-off-by: Linyu Yuan <quic_linyyuan@quicinc.com>
Link: https://lore.kernel.org/r/1656662934-10226-1-git-send-email-quic_linyyuan@quicinc.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/usb/typec/class.c b/drivers/usb/typec/class.c
index c7d44daa05c4a2c0a581564917e170b2fbcf7317..9d3a35b2046d30590a946de7ec5bc9f1a9f18317 100644 (file)
--- a/drivers/usb/typec/class.c
+++ b/drivers/usb/typec/class.c
@@ -1444,6 +1444,7 @@ void typec_set_pwr_opmode(struct typec_port *port,
                        partner->usb_pd = 1;
                        sysfs_notify(&partner_dev->kobj, NULL,
                                     "supports_usb_power_delivery");
+                       kobject_uevent(&partner_dev->kobj, KOBJ_CHANGE);
                }
                put_device(partner_dev);
        }