This is a note to let you know that I've just added the patch titled
usb: chipidea: msm: Ensure proper controller reset using role switch API
to the 5.4-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-chipidea-msm-ensure-proper-controller-reset-using-role-switch-api.patch
and it can be found in the queue-5.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 91edf63d5022bd0464788ffb4acc3d5febbaf81d Mon Sep 17 00:00:00 2001
From: Bryan O'Donoghue <bryan.odonoghue@xxxxxxxxxx>
Date: Thu, 7 May 2020 08:49:18 +0800
Subject: usb: chipidea: msm: Ensure proper controller reset using role switch API
From: Bryan O'Donoghue <bryan.odonoghue@xxxxxxxxxx>
commit 91edf63d5022bd0464788ffb4acc3d5febbaf81d upstream.
Currently we check to make sure there is no error state on the extcon
handle for VBUS when writing to the HS_PHY_GENCONFIG_2 register. When using
the USB role-switch API we still need to write to this register absent an
extcon handle.
This patch makes the appropriate update to ensure the write happens if
role-switching is true.
Fixes: 05559f10ed79 ("usb: chipidea: add role switch class support")
Cc: stable <stable@xxxxxxxxxxxxxxx>
Cc: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
Cc: Philipp Zabel <p.zabel@xxxxxxxxxxxxxx>
Cc: linux-usb@xxxxxxxxxxxxxxx
Cc: linux-kernel@xxxxxxxxxxxxxxx
Cc: Stephen Boyd <swboyd@xxxxxxxxxxxx>
Signed-off-by: Bryan O'Donoghue <bryan.odonoghue@xxxxxxxxxx>
Signed-off-by: Peter Chen <peter.chen@xxxxxxx>
Link: https://lore.kernel.org/r/20200507004918.25975-2-peter.chen@xxxxxxxxxx
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/usb/chipidea/ci_hdrc_msm.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/usb/chipidea/ci_hdrc_msm.c
+++ b/drivers/usb/chipidea/ci_hdrc_msm.c
@@ -114,7 +114,7 @@ static int ci_hdrc_msm_notify_event(stru
hw_write_id_reg(ci, HS_PHY_GENCONFIG_2,
HS_PHY_ULPI_TX_PKT_EN_CLR_FIX, 0);
- if (!IS_ERR(ci->platdata->vbus_extcon.edev)) {
+ if (!IS_ERR(ci->platdata->vbus_extcon.edev) || ci->role_switch) {
hw_write_id_reg(ci, HS_PHY_GENCONFIG_2,
HS_PHY_SESS_VLD_CTRL_EN,
HS_PHY_SESS_VLD_CTRL_EN);
Patches currently in stable-queue which might be from bryan.odonoghue@xxxxxxxxxx are
queue-5.4/usb-chipidea-msm-ensure-proper-controller-reset-using-role-switch-api.patch
