linux-kernel - Re: [PATCH 10/25] Staging: hv: vmbus: Return proper error code in vmbus

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Message-ID: <20110910183336.GB30865@suse.de>
Date:	Sat, 10 Sep 2011 20:33:36 +0200
From:	Greg KH <gregkh@...e.de>
To:	KY Srinivasan <kys@...rosoft.com>
Cc:	Greg KH <greg@...ah.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"devel@...uxdriverproject.org" <devel@...uxdriverproject.org>,
	"virtualization@...ts.osdl.org" <virtualization@...ts.osdl.org>,
	Haiyang Zhang <haiyangz@...rosoft.com>
Subject: Re: [PATCH 10/25] Staging: hv: vmbus: Return proper error code in
 vmbus_remove()

On Sat, Sep 10, 2011 at 02:22:22PM +0000, KY Srinivasan wrote:
> 
> 
> > -----Original Message-----
> > From: Greg KH [mailto:greg@...ah.com]
> > Sent: Friday, September 09, 2011 4:43 PM
> > To: KY Srinivasan
> > Cc: gregkh@...e.de; linux-kernel@...r.kernel.org;
> > devel@...uxdriverproject.org; virtualization@...ts.osdl.org; Haiyang Zhang
> > Subject: Re: [PATCH 10/25] Staging: hv: vmbus: Return proper error code in
> > vmbus_remove()
> > 
> > On Thu, Sep 08, 2011 at 07:24:21AM -0700, K. Y. Srinivasan wrote:
> > > Return proper error code in vmbus_remove().
> > >
> > > Signed-off-by: K. Y. Srinivasan <kys@...rosoft.com>
> > > Signed-off-by: Haiyang Zhang <haiyangz@...rosoft.com>
> > > ---
> > >  drivers/staging/hv/vmbus_drv.c |    4 ++--
> > >  1 files changed, 2 insertions(+), 2 deletions(-)
> > >
> > > diff --git a/drivers/staging/hv/vmbus_drv.c b/drivers/staging/hv/vmbus_drv.c
> > > index b9aeb76..95d33a4 100644
> > > --- a/drivers/staging/hv/vmbus_drv.c
> > > +++ b/drivers/staging/hv/vmbus_drv.c
> > > @@ -325,7 +325,7 @@ static int vmbus_probe(struct device *child_device)
> > >   */
> > >  static int vmbus_remove(struct device *child_device)
> > >  {
> > > -	int ret;
> > > +	int ret = 0;
> > 
> > As remove functions can't fail, why return anything at all?
> > 
> > Doesn't make sense, please fix.
> 
> Greg,
> 
> Looking at the struct bus_type, the remove function is not a void function.

Yeah, but it's never checked, and most bus types just use a void
function as the function can not fail (or, it's not allowed to at
least.)

> I was just fixing something that was broken in this function.

That's fine, then you can add it to the list of things to change :)

greg k-h
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