| Message ID | 20240531104653.1303519-1-heikki.krogerus@linux.intel.com |
|---|---|
| State | New |
| Headers | show |
| Series | usb: typec: ucsi: Ack also failed Get Error commands | expand |
On Fri, May 31, 2024 at 01:46:52PM +0300, Heikki Krogerus wrote: > It is possible that also the GET_ERROR command fails. If > that happens, the command completion still needs to be > acknowledged. Otherwise the interface will be stuck until > it's reset. > > Reported-by: Ammy Yi <ammy.yi@intel.com> > Fixes: bdc62f2bae8f ("usb: typec: ucsi: Simplified registration and I/O API") > Cc: stable@vger.kernel.org > Signed-off-by: Heikki Krogerus <heikki.krogerus@linux.intel.com> > --- > drivers/usb/typec/ucsi/ucsi.c | 7 ++++++- > 1 file changed, 6 insertions(+), 1 deletion(-) > Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
diff --git a/drivers/usb/typec/ucsi/ucsi.c b/drivers/usb/typec/ucsi/ucsi.c index 3966e555f797..5c57ecbce813 100644 --- a/drivers/usb/typec/ucsi/ucsi.c +++ b/drivers/usb/typec/ucsi/ucsi.c @@ -153,8 +153,13 @@ static int ucsi_exec_command(struct ucsi *ucsi, u64 cmd) } if (cci & UCSI_CCI_ERROR) { - if (cmd == UCSI_GET_ERROR_STATUS) + if (cmd == UCSI_GET_ERROR_STATUS) { + ret = ucsi_acknowledge(ucsi, false); + if (ret) + return ret; + return -EIO; + } return ucsi_read_error(ucsi); }
It is possible that also the GET_ERROR command fails. If that happens, the command completion still needs to be acknowledged. Otherwise the interface will be stuck until it's reset. Reported-by: Ammy Yi <ammy.yi@intel.com> Fixes: bdc62f2bae8f ("usb: typec: ucsi: Simplified registration and I/O API") Cc: stable@vger.kernel.org Signed-off-by: Heikki Krogerus <heikki.krogerus@linux.intel.com> --- drivers/usb/typec/ucsi/ucsi.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-)