pmdomain: raspberrypi-power: Avoid powering down USB

During supend to idle any request to power off the USB domain
leads to a timeout. As a temporary workaround don't register
the relevant power off handler.

Link: raspberrypi/firmware#1894
Signed-off-by: Stefan Wahren <wahrenst@gmx.net>

drivers/pmdomain/bcm/raspberrypi-power.c

@@ -86,7 +86,14 @@ static void rpi_common_init_power_domain(struct rpi_power_domains *rpi_domains,
 
  dom->base.name = name;
  dom->base.power_on = rpi_domain_on;
- dom->base.power_off = rpi_domain_off;
+
+ /*
+ * During supend to idle any request to power off the USB domain
+ * leads to a timeout. As a temporary workaround don't register
+ * the relevant power off handler.
+ */
+ if (strcmp("USB", name))
+ dom->base.power_off = rpi_domain_off;
 
  /*
  * Treat all power domains as off at boot.