Commit a7dc438b authored by Linyu Yuan's avatar Linyu Yuan Committed by Greg Kroah-Hartman
Browse files

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: bdc62f2b (usb: typec: ucsi: Simplified registration and I/O API)
Cc: <stable@vger.kernel.org> # 5.10
Signed-off-by: default avatarJack Pham <quic_jackp@quicinc.com>
Signed-off-by: default avatarLinyu Yuan <quic_linyyuan@quicinc.com>
Link: https://lore.kernel.org/r/1658817949-4632-1-git-send-email-quic_linyyuan@quicinc.com


Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent c3ffc9c4

drivers/usb/typec/ucsi/ucsi.c

+4 −0
Original line number Diff line number Diff line
@@ -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;