Skip to contentSkip to conversation

FAILED: patch "[PATCH] usb: typec: ucsi: Check if power role change actually" failed to apply to 6.6-stable tree

PATCH New [email protected] 2 participants 2 messages Jun 4 – Jun 5

Subsystems (3)
Stable branch USB USB Type-C class
lore
Share & tools
lore

[email protected]

author maintainer
#0 lore raw

The patch below does not apply to the 6.6-stable tree.
If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <[email protected]>.

To reproduce the conflict and resubmit, you may use the following commands:

git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-6.6.y
git checkout FETCH_HEAD
git cherry-pick -x b80e7d34c7ea6a564525119d6138fbb577a23dba
# <resolve conflicts, build, test, etc.>
git commit -s
git send-email --to '<[email protected]>' --in-reply-to '2026060417-headless-faceless-e4a9@gregkh' --subject-prefix 'PATCH 6.6.y' HEAD^..

Possible dependencies:

thanks,

greg k-h

------------------ original commit in Linus's tree ------------------

From b80e7d34c7ea6a564525119d6138fbb577a23dba Mon Sep 17 00:00:00 2001
From: Myrrh Periwinkle <[email protected]>
Date: Tue, 19 May 2026 18:41:39 +0700
Subject: [PATCH] usb: typec: ucsi: Check if power role change actually
happened before handling

The CrOS EC may send a connector status change event with the power direction changed flag set even if the power direction hasn't actually changed after initiating a SET_PDR command internally [1]. In practice this happens on every system suspend due to other changes performed by the EC [2][3][4], causing suspend to fail.

Fix this by checking if the power role change actually happened before handling it.

[1]: https://source.chromium.org/chromiumos/chromiumos/codesearch/+/main:src/platform/ec/zephyr/subsys/pd_controller/pdc_power_mgmt.c;l=1689;drc=2d5a1cffce4e5ac8a39442cb3b764d2d5e1cf794
[2]: https://source.chromium.org/chromiumos/chromiumos/codesearch/+/main:src/platform/ec/zephyr/subsys/pd_controller/pdc_power_mgmt.c;l=3923;drc=2d5a1cffce4e5ac8a39442cb3b764d2d5e1cf794
[3]: https://source.chromium.org/chromiumos/chromiumos/codesearch/+/main:src/platform/ec/zephyr/subsys/pd_controller/pdc_power_mgmt.c;l=5094;drc=2d5a1cffce4e5ac8a39442cb3b764d2d5e1cf794
[4]: https://source.chromium.org/chromiumos/chromiumos/codesearch/+/main:src/platform/ec/zephyr/subsys/pd_controller/pdc_power_mgmt.c;l=2229;drc=2d5a1cffce4e5ac8a39442cb3b764d2d5e1cf794

Cc stable <[email protected]>
Fixes 7616f006db07 ("usb: typec: ucsi: Update power_supply on power role change")
Signed-off-by Myrrh Periwinkle <[email protected]>
Reported-and-tested-by Sergey Senozhatsky <[email protected]>
Reviewed-by Heikki Krogerus <[email protected]>
Link https://patch.msgid.link/[email protected] open here
Signed-off-by Greg Kroah-Hartman <[email protected]>
drivers/usb/typec/ucsi/ucsi.c +4 -2
index 539dc706798d..53c101bd48e2 100644
@@ -1277,7 +1277,7 @@ static void ucsi_handle_connector_change(struct work_struct *work)
 						  work);
 	struct ucsi *ucsi = con->ucsi;
 	u8 curr_scale, volt_scale;
-	enum typec_role role;
+	enum typec_role role, prev_role;
 	u16 change;
 	int ret;
 	u32 val;

@@ -1288,6 +1288,8 @@ static void ucsi_handle_connector_change(struct work_struct *work)
 		dev_err_once(ucsi->dev, "%s entered without EVENT_PENDING\n",
 			     __func__);
 
+	prev_role = UCSI_CONSTAT(con, PWR_DIR);
+
 	ret = ucsi_get_connector_status(con, true);
 	if (ret) {
 		dev_err(ucsi->dev, "%s: GET_CONNECTOR_STATUS failed (%d)\n",

@@ -1304,7 +1306,7 @@ static void ucsi_handle_connector_change(struct work_struct *work)
 	change = UCSI_CONSTAT(con, CHANGE);
 	role = UCSI_CONSTAT(con, PWR_DIR);
 
-	if (change & UCSI_CONSTAT_POWER_DIR_CHANGE) {
+	if ((change & UCSI_CONSTAT_POWER_DIR_CHANGE) && role != prev_role) {
 		typec_set_pwr_role(con->port, role);
 		ucsi_port_psy_changed(con);
maintainer
#1 lore raw

PATCH 1/1 usb: typec: ucsi: Check if power role change actually happened before handling

From: Myrrh Periwinkle <[email protected]>

[ Upstream commit b80e7d34c7ea6a564525119d6138fbb577a23dba ]

The CrOS EC may send a connector status change event with the power direction changed flag set even if the power direction hasn't actually changed after initiating a SET_PDR command internally [1]. In practice this happens on every system suspend due to other changes performed by the EC [2][3][4], causing suspend to fail.

Fix this by checking if the power role change actually happened before handling it.

[1]: https://source.chromium.org/chromiumos/chromiumos/codesearch/+/main:src/platform/ec/zephyr/subsys/pd_controller/pdc_power_mgmt.c;l=1689;drc=2d5a1cffce4e5ac8a39442cb3b764d2d5e1cf794
[2]: https://source.chromium.org/chromiumos/chromiumos/codesearch/+/main:src/platform/ec/zephyr/subsys/pd_controller/pdc_power_mgmt.c;l=3923;drc=2d5a1cffce4e5ac8a39442cb3b764d2d5e1cf794
[3]: https://source.chromium.org/chromiumos/chromiumos/codesearch/+/main:src/platform/ec/zephyr/subsys/pd_controller/pdc_power_mgmt.c;l=5094;drc=2d5a1cffce4e5ac8a39442cb3b764d2d5e1cf794
[4]: https://source.chromium.org/chromiumos/chromiumos/codesearch/+/main:src/platform/ec/zephyr/subsys/pd_controller/pdc_power_mgmt.c;l=2229;drc=2d5a1cffce4e5ac8a39442cb3b764d2d5e1cf794

Cc stable <[email protected]>
Fixes 7616f006db07 ("usb: typec: ucsi: Update power_supply on power role change")
Signed-off-by Myrrh Periwinkle <[email protected]>
Reported-and-tested-by Sergey Senozhatsky <[email protected]>
Reviewed-by Heikki Krogerus <[email protected]>
Link https://patch.msgid.link/[email protected] open here
Signed-off-by Greg Kroah-Hartman <[email protected]>
Signed-off-by Sasha Levin <[email protected]>
---
 drivers/usb/typec/ucsi/ucsi.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)
drivers/usb/typec/ucsi/ucsi.c +4 -2
index b88f4e179a7ad8..3060a4a13cfc2e 100644
@@ -884,7 +884,7 @@ static void ucsi_handle_connector_change(struct work_struct *work)
 	struct ucsi_connector *con = container_of(work, struct ucsi_connector,
 						  work);
 	struct ucsi *ucsi = con->ucsi;
-	enum typec_role role;
+	enum typec_role role, prev_role;
 	u64 command;
 	int ret;
 

@@ -892,6 +892,8 @@ static void ucsi_handle_connector_change(struct work_struct *work)
 
 	command = UCSI_GET_CONNECTOR_STATUS | UCSI_CONNECTOR_NUMBER(con->num);
 
+	prev_role = !!(con->status.flags & UCSI_CONSTAT_PWR_DIR);
+
 	ret = ucsi_send_command_common(ucsi, command, &con->status,
 				       sizeof(con->status), true);
 	if (ret < 0) {

@@ -908,7 +910,7 @@ static void ucsi_handle_connector_change(struct work_struct *work)
 
 	role = !!(con->status.flags & UCSI_CONSTAT_PWR_DIR);
 
-	if (con->status.change & UCSI_CONSTAT_POWER_DIR_CHANGE) {
+	if ((con->status.change & UCSI_CONSTAT_POWER_DIR_CHANGE) && role != prev_role) {
 		typec_set_pwr_role(con->port, role);
 		ucsi_port_psy_changed(con);
Signature · 1 line
2.53.0