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usb: dwc3: gadget: Prevent repeat pullup()
Don't do soft-disconnect if it's previously done. Likewise, don't do soft-connect if the device is currently connected and running. It would break normal operation. Currently the caller of pullup() (udc's sysfs soft_connect) only checks if it had initiated disconnect to prevent repeating soft-disconnect. It doesn't check for soft-connect. To be safe, let's keep the check here regardless whether the udc core is fixed. Signed-off-by: Thinh Nguyen <Thinh.Nguyen@synopsys.com> Link: https://lore.kernel.org/r/1c1345bd66c97a9d32f77d63aaadd04b7b037143.1650593829.git.Thinh.Nguyen@synopsys.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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@ -2514,6 +2514,10 @@ static int dwc3_gadget_pullup(struct usb_gadget *g, int is_on)
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int ret;
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is_on = !!is_on;
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if (dwc->pullups_connected == is_on)
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return 0;
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dwc->softconnect = is_on;
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/*
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* Per databook, when we want to stop the gadget, if a control transfer
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