This is a note to let you know that I've just added the patch titled
usb: typec: add missing uevent when partner support PD
to the 5.15-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
usb-typec-add-missing-uevent-when-partner-support-pd.patch
and it can be found in the queue-5.15 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 6fb9e1d94789e8ee5a258a23bc588693f743fd6c Mon Sep 17 00:00:00 2001
From: Linyu Yuan <quic_linyyuan@xxxxxxxxxxx>
Date: Fri, 1 Jul 2022 16:08:54 +0800
Subject: usb: typec: add missing uevent when partner support PD
From: Linyu Yuan <quic_linyyuan@xxxxxxxxxxx>
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@xxxxxxxxxxxxxxx
Signed-off-by: Linyu Yuan <quic_linyyuan@xxxxxxxxxxx>
Link: https://lore.kernel.org/r/1656662934-10226-1-git-send-email-quic_linyyuan@xxxxxxxxxxx
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/usb/typec/class.c | 1 +
1 file changed, 1 insertion(+)
--- a/drivers/usb/typec/class.c
+++ b/drivers/usb/typec/class.c
@@ -1718,6 +1718,7 @@ 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);
}
Patches currently in stable-queue which might be from quic_linyyuan@xxxxxxxxxxx are
queue-5.15/usb-typec-add-missing-uevent-when-partner-support-pd.patch
