On Thu, Aug 04, 2022 at 10:02:15PM +0530, Kumaravel Thiagarajan wrote: > +// SPDX-License-Identifier: GPL-2.0+ I have to ask, do you really mean "or any later version" like you are saying here? > +// Copyright (C) 2022 Microchip Technology Inc. > + > +#include <linux/mfd/core.h> > +#include <linux/module.h> > +#include <linux/pci.h> > +#include <linux/spinlock.h> > +#include <linux/gpio/driver.h> > +#include <linux/interrupt.h> > +#include <linux/io.h> > +#include <linux/idr.h> > +#include "mchp_pci1xxxx_gp.h" > + > +struct aux_bus_device { > + struct auxiliary_device_wrapper *aux_device_wrapper[2]; > +}; > + > +DEFINE_IDA(gp_client_ida); Shouldn't this be static? thanks, greg k-h