linux-kernel - Re: [PATCH 3/3 v2] drivers/bus: Device driver for FSL-MC DPRC devices

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Date:	Tue, 30 Sep 2014 21:27:12 -0500
From:	Scott Wood <scottwood@...escale.com>
To:	Timur Tabi <timur@...i.org>
CC:	"J. German Rivera" <German.Rivera@...escale.com>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Arnd Bergmann <arnd@...db.de>,
	lkml <linux-kernel@...r.kernel.org>,
	<stuart.yoder@...escale.com>,
	Kim Phillips <Kim.Phillips@...escale.com>,
	Alexander Graf <agraf@...e.de>,
	<linuxppc-release@...ux.freescale.net>
Subject: Re: [PATCH 3/3 v2] drivers/bus: Device driver for FSL-MC DPRC
 devices

On Tue, 2014-09-30 at 21:19 -0500, Timur Tabi wrote:
> On Fri, Sep 19, 2014 at 5:49 PM, J. German Rivera
> <German.Rivera@...escale.com> wrote:
> > +/**
> > + * dprc_remove_devices - Removes devices for objects removed from a DPRC
> > + *
> > + * @mc_bus_dev: pointer to the fsl-mc device that represents a DPRC object
> > + * @obj_desc_array: array of object descriptors for child objects currently
> > + * present in the DPRC in the MC.
> > + * @num_child_objects_in_mc: number of entries in obj_desc_array
> > + *
> > + * Synchronizes the state of the Linux bus driver with the actual state of
> > + * the MC by removing devices that represent MC objects that have
> > + * been dynamically removed in the physical DPRC.
> > + */
> > +static void dprc_remove_devices(struct fsl_mc_device *mc_bus_dev,
> > +                               struct dprc_obj_desc *obj_desc_array,
> > +                               int num_child_objects_in_mc)
> > +{
> > +       if (num_child_objects_in_mc != 0) {
> 
> Like here.  Just do "if (num_child_objects_in_mc) {"

This seems to be a place that is testing for zero as a value rather than
as a stand-in for NULL, so I'd argue it's better style to leave it as
is.

-Scott


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