This is a note to let you know that I've just added the patch titled
usb: typec: ucsi: Acknowledge the GET_ERROR_STATUS command completion
to the 5.19-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-ucsi-acknowledge-the-get_error_status-command-completion.patch
and it can be found in the queue-5.19 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From a7dc438b5e446afcd1b3b6651da28271400722f2 Mon Sep 17 00:00:00 2001
From: Linyu Yuan <quic_linyyuan@xxxxxxxxxxx>
Date: Tue, 26 Jul 2022 14:45:49 +0800
Subject: usb: typec: ucsi: Acknowledge the GET_ERROR_STATUS command completion
From: Linyu Yuan <quic_linyyuan@xxxxxxxxxxx>
commit a7dc438b5e446afcd1b3b6651da28271400722f2 upstream.
We found PPM will not send any notification after it report error status
and OPM issue GET_ERROR_STATUS command to read the details about error.
According UCSI spec, PPM may clear the Error Status Data after the OPM
has acknowledged the command completion.
This change add operation to acknowledge the command completion from PPM.
Fixes: bdc62f2bae8f (usb: typec: ucsi: Simplified registration and I/O API)
Cc: <stable@xxxxxxxxxxxxxxx> # 5.10
Signed-off-by: Jack Pham <quic_jackp@xxxxxxxxxxx>
Signed-off-by: Linyu Yuan <quic_linyyuan@xxxxxxxxxxx>
Link: https://lore.kernel.org/r/1658817949-4632-1-git-send-email-quic_linyyuan@xxxxxxxxxxx
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/usb/typec/ucsi/ucsi.c | 4 ++++
1 file changed, 4 insertions(+)
--- a/drivers/usb/typec/ucsi/ucsi.c
+++ b/drivers/usb/typec/ucsi/ucsi.c
@@ -76,6 +76,10 @@ static int ucsi_read_error(struct ucsi *
if (ret)
return ret;
+ ret = ucsi_acknowledge_command(ucsi);
+ if (ret)
+ return ret;
+
switch (error) {
case UCSI_ERROR_INCOMPATIBLE_PARTNER:
return -EOPNOTSUPP;
Patches currently in stable-queue which might be from quic_linyyuan@xxxxxxxxxxx are
queue-5.19/usb-typec-ucsi-acknowledge-the-get_error_status-command-completion.patch
