| Message ID | 1658817949-4632-1-git-send-email-quic_linyyuan@quicinc.com |
|---|---|
| State | New |
| Headers | show |
| Series | usb: typec: ucsi: Acknowledge the GET_ERROR_STATUS command completion | expand |
On Tue, Jul 26, 2022 at 02:45:49PM +0800, Linyu Yuan wrote: > 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> Acked-by: Heikki Krogerus <heikki.krogerus@linux.intel.com> > --- > 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 cbd862f..1aea464 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; thanks,
diff --git a/drivers/usb/typec/ucsi/ucsi.c b/drivers/usb/typec/ucsi/ucsi.c index cbd862f..1aea464 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;