put the device in idle when shutdown.
Signed-off-by: Neil Zhang <zhangwm@xxxxxxxxxxx>
---
drivers/usb/gadget/mv_udc_core.c | 12 ++++++++++++
1 files changed, 12 insertions(+), 0 deletions(-)
diff --git a/drivers/usb/gadget/mv_udc_core.c b/drivers/usb/gadget/mv_udc_core.c
index 322e1f0..511026f 100644
--- a/drivers/usb/gadget/mv_udc_core.c
+++ b/drivers/usb/gadget/mv_udc_core.c
@@ -2206,9 +2206,21 @@ static const struct dev_pm_ops mv_udc_pm_ops = {
};
#endif
+static void mv_udc_shutdown(struct platform_device *dev)
+{
+ struct mv_udc *udc = the_controller;
+ u32 mode;
+
+ /* reset controller mode to IDLE */
+ mode = readl(&udc->op_regs->usbmode);
+ mode &= ~3;
+ writel(mode, &udc->op_regs->usbmode);
+}
+
static struct platform_driver udc_driver = {
.probe = mv_udc_probe,
.remove = __exit_p(mv_udc_remove),
+ .shutdown = mv_udc_shutdown,
.driver = {
.owner = THIS_MODULE,
.name = "pxa-u2o",
--
1.7.4.1
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