linux-kernel - Re: [PATCH v4 5/5] Add ioctls to enable and disable local controls on an instrument

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Message-ID: <20151118082744.GB1776@slacky>
Date:	Wed, 18 Nov 2015 09:27:44 +0100
From:	Dave Penkler <dpenkler@...il.com>
To:	Andy Shevchenko <andy.shevchenko@...il.com>
Cc:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	peter.chen@...escale.com, teuniz@...il.com,
	USB <linux-usb@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v4 5/5] Add ioctls to enable and disable local controls
 on an instrument

On Sun, Nov 15, 2015 at 10:10:35PM +0200, Andy Shevchenko wrote:
> On Sun, Nov 15, 2015 at 8:40 PM, Dave Penkler <dpenkler@...il.com> wrote:
> > These ioctls provide support for the USBTMC-USB488 control requests
> > for REN_CONTROL, GO_TO_LOCAL and LOCAL_LOCKOUT
> >
> > +
> > +       dev = &data->intf->dev;
> 
> Could be assigned above.
> 

ok

> > +               wValue = (val) ? 1 : 0;
> 
> Redundant parens.
> 

ok

> > +               rv = -EIO;
> 
> Hmm??? Does usb_control_msg() return a proper error code? If it does,
> perhaps better to propagate it.
> 

You are right.

> > +               rv = -EIO;
> > +               goto exit;
> 
> > +       } else {
> 
> Redundant else.
> 

OK

> 
Thanks,
-Dave
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