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The commitb8b9c974af("usb: renesas_usbhs: gadget: disable all eps when the driver stops") causes the unused-but-set-variable warning. But, if the usbhsg_ep_disable() will return non-zero value, udc/core.c doesn't clear the ep->enabled flag. So, this driver should not return non-zero value, if the pipe is zero because this means the pipe is already disabled. Otherwise, the ep->enabled flag is never cleared when the usbhsg_ep_disable() is called by the renesas_usbhs driver first. Fixes:b8b9c974af("usb: renesas_usbhs: gadget: disable all eps when the driver stops") Fixes:11432050f0("usb: renesas_usbhs: gadget: fix NULL pointer dereference in ep_disable()") Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com> Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>