usb: dwc2: drd: fix inconsistent mode if role-switch-default-mode="host"

Some boards might use USB-A female connector for USB ports, however,
the port could be connected to a dual-mode USB controller, making it
also behaves as a peripheral device if male-to-male cable is connected.

In this case, the dts looks like this:

	&usb0 {
		status = "okay";
		dr_mode = "otg";
		usb-role-switch;
		role-switch-default-mode = "host";
	};

After boot, dwc2_ovr_init() sets GOTGCTL to GOTGCTL_AVALOVAL and call
dwc2_force_mode() with parameter host=false, which causes inconsistent
mode - The hardware is in peripheral mode while the kernel status is
in host mode.

What we can do now is to call dwc2_drd_role_sw_set() to switch to
device mode, and everything should work just fine now, even switching
back to none(default) mode afterwards.

Fixes: e14acb8 ("usb: dwc2: drd: add role-switch-default-node support")
Cc: stable <[email protected]>
Signed-off-by: Ziyang Huang <[email protected]>
Tested-by: Fabrice Gasnier <[email protected]>
Acked-by: Minas Harutyunyan <[email protected]>
Reviewed-by: Amelie Delaunay <[email protected]>
Link: https://lore.kernel.org/r/SG2PR01MB204837BF68EDB0E343D2A375C9A59@SG2PR01MB2048.apcprd01.prod.exchangelabs.com
Signed-off-by: Greg Kroah-Hartman <[email protected]>

Author: hzyitc

drivers/usb/dwc2/drd.c

@@ -35,7 +35,8 @@ static void dwc2_ovr_init(struct dwc2_hsotg *hsotg)
 
 	spin_unlock_irqrestore(&hsotg->lock, flags);
 
-	dwc2_force_mode(hsotg, (hsotg->dr_mode == USB_DR_MODE_HOST));
+	dwc2_force_mode(hsotg, (hsotg->dr_mode == USB_DR_MODE_HOST) ||
+				(hsotg->role_sw_default_mode == USB_DR_MODE_HOST));
 }
 
 static int dwc2_ovr_avalid(struct dwc2_hsotg *hsotg, bool valid)