[PATCH 2/2] usb: mtu3: condition PHY wakeup for host mode and runtime suspend

[Fei Shao]

Host bus activity during gadget mode system suspend can trigger
unexpected system wakeups via interrupts because PHY wakeup is enabled
unconditionally.

Improve the suspend flow by conditioning PHY wakeup setup on
device_may_wakeup() and restricting it to host mode or runtime suspend
to ensure proper wakeup handling in gadget mode.

Signed-off-by: Fei Shao <fshao@xxxxxxxxxxxx>
---

 drivers/usb/mtu3/mtu3_plat.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/usb/mtu3/mtu3_plat.c b/drivers/usb/mtu3/mtu3_plat.c
index cc8a864dbd63..b4f4c776adb9 100644
--- a/drivers/usb/mtu3/mtu3_plat.c
+++ b/drivers/usb/mtu3/mtu3_plat.c
@@ -544,7 +544,8 @@ static int mtu3_suspend_common(struct device *dev, pm_message_t msg)
 
 	ssusb_phy_power_off(ssusb);
 	clk_bulk_disable_unprepare(BULK_CLKS_CNT, ssusb->clks);
-	ssusb_wakeup_set(ssusb, true);
+	if (device_may_wakeup(dev) && (ssusb->is_host || PMSG_IS_AUTO(msg)))
+		ssusb_wakeup_set(ssusb, true);
 	return 0;
 
 sleep_err:
-- 
2.55.0.rc0.799.gd6f94ed593-goog