USB: musb: do not work if no gadget driver is loaded
On OTG and gadget-only configurations, we need a gadget driver in order to work properly, so avoid changing operation modes when there's no gadget driver loaded. Signed-off-by: Felipe Balbi <felipe.balbi@nokia.com> Cc: David Brownell <dbrownell@users.sourceforge.net> Acked-by: Anand Gadiyar <gadiyar@ti.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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@ -1521,6 +1521,14 @@ irqreturn_t musb_interrupt(struct musb *musb)
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(devctl & MUSB_DEVCTL_HM) ? "host" : "peripheral",
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musb->int_usb, musb->int_tx, musb->int_rx);
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#ifdef CONFIG_USB_GADGET_MUSB_HDRC
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if (is_otg_enabled(musb) || is_peripheral_enabled(musb))
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if (!musb->gadget_driver) {
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DBG(5, "No gadget driver loaded\n");
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return IRQ_HANDLED;
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}
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#endif
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/* the core can interrupt us for multiple reasons; docs have
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* a generic interrupt flowchart to follow
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*/
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