usb: ulpi: ulpi_init should be executed in subsys_initcall

Phy drivers and the ulpi interface providers depend on the
registration of the ulpi bus.  Ulpi registers the bus in
module_init(). This could cause unnecessary bus users'
probe delays. i.e. unnecessary -EPROBE_DEFER happening on
ulpi_drivers in case they're registered before ulpi bus
itself.

Reported-by: Zhuo Qiuxu <[email protected]>
Signed-off-by: Lu Baolu <[email protected]>
Acked-by: Heikki Krogerus <[email protected]>
Signed-off-by: Felipe Balbi <[email protected]>

diff --git a/drivers/usb/common/ulpi.c b/drivers/usb/common/ulpi.c
index 0e6f968e93fe8a9f31f7de7199fa778b60b2f900..01c0c0477a9e93d1c8e1150b80763f5ee6c90a02 100644 (file)
--- a/drivers/usb/common/ulpi.c
+++ b/drivers/usb/common/ulpi.c
@@ -242,7 +242,7 @@ static int __init ulpi_init(void)
 {
        return bus_register(&ulpi_bus);
 }
-module_init(ulpi_init);
+subsys_initcall(ulpi_init);
 
 static void __exit ulpi_exit(void)
 {