usb: typec: ucsi: Don't stop alt mode registration on busy condition

If the PPM says it's busy, we can now simply try again.

Signed-off-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Link: https://lore.kernel.org/r/20210920142419.54493-3-heikki.krogerus@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/usb/typec/ucsi/ucsi.c b/drivers/usb/typec/ucsi/ucsi.c
index ffb5be51daf85b07347a0567f27792418706d398..a35efd8174bd45f4c82aa37417187cbdf4cff629 100644 (file)
--- a/drivers/usb/typec/ucsi/ucsi.c
+++ b/drivers/usb/typec/ucsi/ucsi.c
@@ -437,6 +437,8 @@ static int ucsi_register_altmodes(struct ucsi_connector *con, u8 recipient)
                command |= UCSI_GET_ALTMODE_CONNECTOR_NUMBER(con->num);
                command |= UCSI_GET_ALTMODE_OFFSET(i);
                len = ucsi_send_command(con->ucsi, command, alt, sizeof(alt));
+               if (len == -EBUSY)
+                       continue;
                if (len <= 0)
                        return len;