This is a note to let you know that I've just added the patch titled
usb: typec: tcpm: handle SRC_STARTUP state if cc changes
to my usb git tree which can be found at
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git
in the usb-linus branch.
The patch will show up in the next release of the linux-next tree
(usually sometime within the next 24 hours during the week.)
The patch will hopefully also be merged in Linus's tree for the
next -rc kernel release.
If you have any questions about this process, please let me know.
>From 6d91017a295e9790eec02c4e43f020cdb55f5d98 Mon Sep 17 00:00:00 2001
From: Xu Yang <xu.yang_2@xxxxxxx>
Date: Tue, 28 Sep 2021 19:16:39 +0800
Subject: usb: typec: tcpm: handle SRC_STARTUP state if cc changes
TCPM for DRP should do the same action as SRC_ATTACHED when cc changes in
SRC_STARTUP state. Otherwise, TCPM will transition to SRC_UNATTACHED state
which is not satisfied with the Type-C spec.
Per Type-C spec:
DRP port should move to Unattached.SNK instead of Unattached.SRC if sink
removed.
Fixes: 4b4e02c83167 ("typec: tcpm: Move out of staging")
cc: <stable@xxxxxxxxxxxxxxx>
Reviewed-by: Guenter Roeck <linux@xxxxxxxxxxxx>
Acked-by: Heikki Krogerus <heikki.krogerus@xxxxxxxxxxxxxxx>
Signed-off-by: Xu Yang <xu.yang_2@xxxxxxx>
Link: https://lore.kernel.org/r/20210928111639.3854174-1-xu.yang_2@xxxxxxx
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/usb/typec/tcpm/tcpm.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/usb/typec/tcpm/tcpm.c b/drivers/usb/typec/tcpm/tcpm.c
index a4d37205df54..7f2f3ff1b391 100644
--- a/drivers/usb/typec/tcpm/tcpm.c
+++ b/drivers/usb/typec/tcpm/tcpm.c
@@ -4876,6 +4876,7 @@ static void _tcpm_cc_change(struct tcpm_port *port, enum typec_cc_status cc1,
tcpm_set_state(port, SRC_ATTACH_WAIT, 0);
break;
case SRC_ATTACHED:
+ case SRC_STARTUP:
case SRC_SEND_CAPABILITIES:
case SRC_READY:
if (tcpm_port_is_disconnected(port) ||
--
2.33.0
