This is a note to let you know that I've just added the patch titled
usb: typec: class: fix typec_altmode_put_partner to put plugs
to the 5.15-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
usb-typec-class-fix-typec_altmode_put_partner-to-put-plugs.patch
and it can be found in the queue-5.15 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From b17b7fe6dd5c6ff74b38b0758ca799cdbb79e26e Mon Sep 17 00:00:00 2001
From: RD Babiera <rdbabiera@xxxxxxxxxx>
Date: Wed, 29 Nov 2023 19:23:50 +0000
Subject: usb: typec: class: fix typec_altmode_put_partner to put plugs
From: RD Babiera <rdbabiera@xxxxxxxxxx>
commit b17b7fe6dd5c6ff74b38b0758ca799cdbb79e26e upstream.
When typec_altmode_put_partner is called by a plug altmode upon release,
the port altmode the plug belongs to will not remove its reference to the
plug. The check to see if the altmode being released evaluates against the
released altmode's partner instead of the calling altmode itself, so change
adev in typec_altmode_put_partner to properly refer to the altmode being
released.
typec_altmode_set_partner is not run for port altmodes, so also add a check
in typec_altmode_release to prevent typec_altmode_put_partner() calls on
port altmode release.
Fixes: 8a37d87d72f0 ("usb: typec: Bus type for alternate modes")
Cc: stable@xxxxxxxxxxxxxxx
Signed-off-by: RD Babiera <rdbabiera@xxxxxxxxxx>
Reviewed-by: Heikki Krogerus <heikki.krogerus@xxxxxxxxxxxxxxx>
Link: https://lore.kernel.org/r/20231129192349.1773623-2-rdbabiera@xxxxxxxxxx
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/usb/typec/class.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
--- a/drivers/usb/typec/class.c
+++ b/drivers/usb/typec/class.c
@@ -265,7 +265,7 @@ static void typec_altmode_put_partner(st
if (!partner)
return;
- adev = &partner->adev;
+ adev = &altmode->adev;
if (is_typec_plug(adev->dev.parent)) {
struct typec_plug *plug = to_typec_plug(adev->dev.parent);
@@ -495,7 +495,8 @@ static void typec_altmode_release(struct
{
struct altmode *alt = to_altmode(to_typec_altmode(dev));
- typec_altmode_put_partner(alt);
+ if (!is_typec_port(dev->parent))
+ typec_altmode_put_partner(alt);
altmode_id_remove(alt->adev.dev.parent, alt->id);
kfree(alt);
Patches currently in stable-queue which might be from rdbabiera@xxxxxxxxxx are
queue-5.15/usb-typec-class-fix-typec_altmode_put_partner-to-put-plugs.patch
