From 47eb8de3bbde346b880bb65ef0abe907d7fd6438 Mon Sep 17 00:00:00 2001
From: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Date: Mon, 20 Sep 2021 17:24:14 +0300
Subject: [PATCH] usb: typec: ucsi: Don't stop alt mode registration on busy
condition
Git-commit: 47eb8de3bbde346b880bb65ef0abe907d7fd6438
References: jsc#SLE-19356
Patch-mainline: v5.16-rc1
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>
Signed-off-by: Oliver Neukum <oneukum@suse.com>
---
drivers/usb/typec/ucsi/ucsi.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/usb/typec/ucsi/ucsi.c b/drivers/usb/typec/ucsi/ucsi.c
index ffb5be51daf8..a35efd8174bd 100644
--- 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;
--
2.26.2