From: Linyu Yuan quic_linyyuan@quicinc.com
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@qu... Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/usb/typec/class.c | 1 + 1 file changed, 1 insertion(+)
--- a/drivers/usb/typec/class.c +++ b/drivers/usb/typec/class.c @@ -1377,6 +1377,7 @@ void typec_set_pwr_opmode(struct typec_p 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); }