linux-kernel - Re: [PATCH][Resend] Remove unneeded version.h includes (and add where needed) for drivers/usb/

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Date:	Wed, 3 Aug 2011 01:50:42 +0300
From:	Felipe Balbi <balbi@...com>
To:	Laurent Pinchart <laurent.pinchart@...asonboard.com>
Cc:	balbi@...com, Jesper Juhl <jj@...osbits.net>,
	LKML <linux-kernel@...r.kernel.org>, trivial@...nel.org,
	Greg Kroah-Hartman <gregkh@...e.de>,
	Matthew Dharm <mdharm-usb@...-eyed-alien.net>,
	linux-usb@...r.kernel.org, usb-storage@...ts.one-eyed-alien.net
Subject: Re: [PATCH][Resend] Remove unneeded version.h includes (and add
 where needed) for drivers/usb/

Hi Laurent,

On Wed, Aug 03, 2011 at 12:11:53AM +0200, Laurent Pinchart wrote:
> Hi Felipe,
> 
> On Tuesday 02 August 2011 23:19:24 Felipe Balbi wrote:
> > On Mon, Aug 01, 2011 at 11:33:29PM +0200, Jesper Juhl wrote:
> > > It was pointed out by 'make versioncheck' that linux/version.h was not
> > > always being included where needed and sometimes included needlessly
> > > in drivers/usb/.
> > > This patch fixes up the includes.
> > > 
> > > For the UVC gadget driver bits, this was ACK'ed by Laurent Pinchart.
> > > 
> > > Signed-off-by: Jesper Juhl <jj@...osbits.net>
> > > Acked-by: Laurent Pinchart <laurent.pinchart@...asonboard.com>
> > > ---
> > > 
> > >  drivers/usb/gadget/uvc.h         |    1 +
> > >  drivers/usb/gadget/uvc_v4l2.c    |    1 -
> > >  drivers/usb/storage/realtek_cr.c |    1 -
> > >  3 files changed, 1 insertions(+), 2 deletions(-)
> > > 
> > > diff --git a/drivers/usb/gadget/uvc.h b/drivers/usb/gadget/uvc.h
> > > index 5b79194..81971fb 100644
> > > --- a/drivers/usb/gadget/uvc.h
> > > +++ b/drivers/usb/gadget/uvc.h
> > > @@ -56,6 +56,7 @@ struct uvc_event
> > > 
> > >  #include <linux/usb.h>	/* For usb_endpoint_* */
> > >  #include <linux/usb/gadget.h>
> > >  #include <linux/videodev2.h>
> > > 
> > > +#include <linux/version.h>
> > 
> > does uvc.h really needs <linux/version.h> ?? Laurent ?
> 
> uvc.h has
> 
> #define DRIVER_VERSION_NUMBER                   KERNEL_VERSION(0, 1, 0)
> 
> This is used in drivers/usb/gadget/uvc_v4l2.c only.
> 
> As the uvc gadget driver lives in-tree, the best fix is probably to remove 
> DRIVER_VERSION_NUMBER completely, and replace it with LINUX_VERSION_CODE where 
> it is used.

yeah, I can agree with that, but do you need a MODULE_VERSION() anyway ?
Would it be better to just remove the MODULE_VERSION altogether as
there's no real benefit from having it ?

-- 
balbi

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