linux-kernel - RE: [PATCH v8 04/20] dlb: add device ioctl layer and first three ioctls

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Date:   Sat, 9 Jan 2021 07:55:45 +0000
From:   "Chen, Mike Ximing" <mike.ximing.chen@...el.com>
To:     Greg KH <gregkh@...uxfoundation.org>
CC:     "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "arnd@...db.de" <arnd@...db.de>,
        "Williams, Dan J" <dan.j.williams@...el.com>,
        "pierre-louis.bossart@...ux.intel.com" 
        <pierre-louis.bossart@...ux.intel.com>
Subject: RE: [PATCH v8 04/20] dlb: add device ioctl layer and first three
 ioctls



> -----Original Message-----
> From: Greg KH <gregkh@...uxfoundation.org>
> Sent: Thursday, January 7, 2021 2:42 PM
> To: Chen, Mike Ximing <mike.ximing.chen@...el.com>
> Cc: linux-kernel@...r.kernel.org; arnd@...db.de; Williams, Dan J
> <dan.j.williams@...el.com>; pierre-louis.bossart@...ux.intel.com; Gage Eads
> <gage.eads@...el.com>
> Subject: Re: [PATCH v8 04/20] dlb: add device ioctl layer and first three ioctls
> 
> > +/* [7:0]: device revision, [15:8]: device version */
> > +#define DLB_SET_DEVICE_VERSION(ver, rev) (((ver) << 8) | (rev))
> > +
> > +static int
> > +dlb_ioctl_get_device_version(struct dlb *dlb __attribute__((unused)),
> 
> We don't use __attribute__((unused)) for function variables in Linux.
> Please remove and tell whatever operating system you ported this from to
> get with the times :)
> 
> thanks,
> 
> greg k-h

OK. Will remove __attribute__((unused)) in the patch set.

Thanks!

Mike