tree c346f8d7afdcdc22deac0b18e1cd627cc83fce31
parent 1dcaa252fdf01e4ba49ece156812043baf01c7cc
author Neil Zhang <zhangwm@marvell.com> 1341886027 +0800
committer Felipe Balbi <balbi@ti.com> 1345709057 +0300

usb: gadget: mv_udc: fix boot up hang

Fix boot up hang when enable udc without otg enabled.
The root cause is that the clock will be shut down when probe routine is
finished because of clock gating. When a gadget driver is registered at
this time, it will call mv_udc_start which in turn will call
mv_udc_vbus_session. If there is no cable attached at the boot up time,
the vbus is low, so it will call stop_activity path without clock
enabled which will cause system hang then.
Actually, we need't go this path when clock is disabled, what we need to
do is just jump out.

Signed-off-by: Neil Zhang <zhangwm@marvell.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>