linux-kernel - Re: [PATCH] staging: fieldbus: anybuss: Remove unnecessary variables

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Message-ID: <20190523084254.GA831@kroah.com>
Date:   Thu, 23 May 2019 10:42:54 +0200
From:   Greg KH <gregkh@...uxfoundation.org>
To:     Nishka Dasgupta <nishka.dasgupta@...oo.com>
Cc:     devel@...verdev.osuosl.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] staging: fieldbus: anybuss: Remove unnecessary variables

On Thu, May 23, 2019 at 01:51:18PM +0530, Nishka Dasgupta wrote:
> 
> 
> On 23/05/19 12:52 PM, Greg KH wrote:
> > On Thu, May 23, 2019 at 12:05:01PM +0530, Nishka Dasgupta wrote:
> > > In the functions export_reset_0 and export_reset_1 in arcx-anybus.c,
> > > the only operation performed before return is passing the variable cd
> > > (which takes the value of a function call on one of the parameters) as
> > > argument to another function. Hence the variable cd can be removed.
> > > Issue found using Coccinelle.
> > > 
> > > Signed-off-by: Nishka Dasgupta <nishka.dasgupta@...oo.com>
> > > ---
> > >   drivers/staging/fieldbus/anybuss/arcx-anybus.c | 8 ++------
> > >   1 file changed, 2 insertions(+), 6 deletions(-)
> > > 
> > > diff --git a/drivers/staging/fieldbus/anybuss/arcx-anybus.c b/drivers/staging/fieldbus/anybuss/arcx-anybus.c
> > > index 2ecffa42e561..e245f940a5c4 100644
> > > --- a/drivers/staging/fieldbus/anybuss/arcx-anybus.c
> > > +++ b/drivers/staging/fieldbus/anybuss/arcx-anybus.c
> > > @@ -87,16 +87,12 @@ static int anybuss_reset(struct controller_priv *cd,
> > >   static void export_reset_0(struct device *dev, bool assert)
> > >   {
> > > -	struct controller_priv *cd = dev_get_drvdata(dev);
> > > -
> > > -	anybuss_reset(cd, 0, assert);
> > > +	anybuss_reset(dev_get_drvdata(dev), 0, assert);
> > >   }
> > 
> > While your patch is "correct", it's not the nicest thing.  The way the
> > code looks today is to make it obvious we are passing a pointer to a
> > struct controller_priv() into anybuss_reset().  But with your change, it
> > looks like we are passing any random void pointer to it.
> > 
> > So I'd prefer the original code please.
> 
> Thank you, I'll drop this patch then.
> 
> > Also, you forgot to cc: Sven on this patch, please always use the output
> > of scripts/get_maintainer.pl.
> 
> Which arguments should I use? If I use --nokeywords, --nogit,
> --nogit-fallback and --norolestats then only your name and the two mailing
> lists show up.

I don't use any arguments at all:
$ ./scripts/get_maintainer.pl --file drivers/staging/fieldbus/anybuss/arcx-anybus.c
Greg Kroah-Hartman <gregkh@...uxfoundation.org> (supporter:STAGING SUBSYSTEM,commit_signer:2/2=100%)
Sven Van Asbroeck <thesven73@...il.com> (commit_signer:2/2=100%,authored:2/2=100%,added_lines:412/412=100%,removed_lines:31/31=100%)
devel@...verdev.osuosl.org (open list:STAGING SUBSYSTEM)
linux-kernel@...r.kernel.org (open list)

> (Also, regarding the mailing lists: every mail sent to
> linux-kernel@...r.kernel.org is bouncing; should I not send to that list
> anymore?)

Please pick a reputable email server, yahoo.com emails are banned from
all vger.kernel.org mailing lists.

thanks,

greg k-h