usb: typec: hd3ss3220: Check if regulator needs to be switched

Check regulator state as peripheral and detach can disable vbus.
Without this check we will try to disable the regulator twice if
we disconnect host and then connect as device.

Fixes: 27fbc19 ("usb: typec: hd3ss3220: Enable VBUS based on role state")
Signed-off-by: Jan Remmet <j.remmet@phytec.de>
Reviewed-by: Heikki Krogerus <heikki.krogerus@linu.intel.com>
Link: https://patch.msgid.link/20260206-wip-jremmet-hd3ss3220_vbus_split-v4-1-ee5b4e402187@phytec.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Author: jremmet

drivers/usb/typec/hd3ss3220.c

@@ -208,6 +208,9 @@ static void hd3ss3220_regulator_control(struct hd3ss3220 *hd3ss3220, bool on)
 {
 	int ret;
 
+	if (regulator_is_enabled(hd3ss3220->vbus) == on)
+		return;
+
 	if (on)
 		ret = regulator_enable(hd3ss3220->vbus);
 	else