usb: gadget: udc-core: stop UDC on device-initiated disconnect
When we want to do device-initiated disconnect, let's make sure we stop the UDC in order to e.g. allow lower power states to be achieved by turning off unnecessary clocks and/or stoping PHYs. When reconnecting, call ->udc_start() again to make sure UDC is reinitialized. Cc: stable@vger.kernel.org Signed-off-by: Felipe Balbi <balbi@ti.com>
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@ -411,8 +411,12 @@ static ssize_t usb_udc_softconn_store(struct device *dev,
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struct usb_udc *udc = container_of(dev, struct usb_udc, dev);
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if (sysfs_streq(buf, "connect")) {
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if (udc_is_newstyle(udc))
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usb_gadget_udc_start(udc->gadget, udc->driver);
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usb_gadget_connect(udc->gadget);
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} else if (sysfs_streq(buf, "disconnect")) {
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if (udc_is_newstyle(udc))
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usb_gadget_udc_stop(udc->gadget, udc->driver);
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usb_gadget_disconnect(udc->gadget);
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} else {
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dev_err(dev, "unsupported command '%s'\n", buf);
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