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 my usb git tree which can be found at git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git in the usb-testing branch.
The patch will show up in the next release of the linux-next tree (usually sometime within the next 24 hours during the week.)
The patch will be merged to the usb-next branch sometime soon, after it passes testing, and the merge window is open.
If you have any questions about this process, please let me know.
From a7dc438b5e446afcd1b3b6651da28271400722f2 Mon Sep 17 00:00:00 2001 From: Linyu Yuan quic_linyyuan@quicinc.com Date: Tue, 26 Jul 2022 14:45:49 +0800 Subject: usb: typec: ucsi: Acknowledge the GET_ERROR_STATUS command completion
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@vger.kernel.org # 5.10 Signed-off-by: Jack Pham quic_jackp@quicinc.com Signed-off-by: Linyu Yuan quic_linyyuan@quicinc.com Link: https://lore.kernel.org/r/1658817949-4632-1-git-send-email-quic_linyyuan@qui... Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/usb/typec/ucsi/ucsi.c | 4 ++++ 1 file changed, 4 insertions(+)
diff --git a/drivers/usb/typec/ucsi/ucsi.c b/drivers/usb/typec/ucsi/ucsi.c index cbd862f9f2a1..1aea46493b85 100644 --- 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 *ucsi) if (ret) return ret;
+ ret = ucsi_acknowledge_command(ucsi); + if (ret) + return ret; + switch (error) { case UCSI_ERROR_INCOMPATIBLE_PARTNER: return -EOPNOTSUPP;