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@xxxxxxxxxxxxxxx
Signed-off-by: Linyu Yuan <quic_linyyuan@xxxxxxxxxxx>
---
v2: (v1 https://lore.kernel.org/linux-usb/1656637315-31229-1-git-send-email-quic_linyyuan@xxxxxxxxxxx/)
fix review comment from Greg,
add Fixes tag,
improve commit description.
drivers/usb/typec/class.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/usb/typec/class.c b/drivers/usb/typec/class.c
index bbc46b1..3da94f712 100644
--- a/drivers/usb/typec/class.c
+++ b/drivers/usb/typec/class.c
@@ -1851,6 +1851,7 @@ 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);
}
--
2.7.4
