linux-kernel - Re: [PATCH 9/9] staging: ks7010: Delete three unnecessary variable initialisations

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Date:	Wed, 20 Jul 2016 17:56:01 +0200
From:	Wolfram Sang <wsa@...-dreams.de>
To:	Julia Lawall <julia.lawall@...6.fr>
Cc:	SF Markus Elfring <elfring@...rs.sourceforge.net>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	devel@...verdev.osuosl.org, LKML <linux-kernel@...r.kernel.org>,
	kernel-janitors@...r.kernel.org
Subject: Re: [PATCH 9/9] staging: ks7010: Delete three unnecessary variable
 initialisations

On Sun, Jul 17, 2016 at 08:51:39PM +0200, Julia Lawall wrote:
> 
> 
> On Sun, 17 Jul 2016, SF Markus Elfring wrote:
> 
> > From: Markus Elfring <elfring@...rs.sourceforge.net>
> > Date: Sun, 17 Jul 2016 19:40:47 +0200
> >
> > Three variables will be set to an appropriate value a bit later.
> > Thus omit the explicit initialisation at the beginning.
> >
> > Signed-off-by: Markus Elfring <elfring@...rs.sourceforge.net>
> > ---
> >  drivers/staging/ks7010/ks7010_sdio.c | 8 ++++----
> >  1 file changed, 4 insertions(+), 4 deletions(-)
> >
> > diff --git a/drivers/staging/ks7010/ks7010_sdio.c b/drivers/staging/ks7010/ks7010_sdio.c
> > index e06bc3c..3c62c57 100644
> > --- a/drivers/staging/ks7010/ks7010_sdio.c
> > +++ b/drivers/staging/ks7010/ks7010_sdio.c
> > @@ -323,14 +323,14 @@ static void tx_device_task(void *dev)
> >  {
> >  	struct ks_wlan_private *priv = (struct ks_wlan_private *)dev;
> >  	struct tx_device_buffer *sp;
> > -	int rc = 0;
> >
> >  	DPRINTK(4, "\n");
> >  	if (cnt_txqbody(priv) > 0
> >  	    && atomic_read(&priv->psstatus.status) != PS_SNOOZE) {
> >  		sp = &priv->tx_dev.tx_dev_buff[priv->tx_dev.qhead];
> >  		if (priv->dev_state >= DEVICE_STATE_BOOT) {
> > -			rc = write_to_device(priv, sp->sendp, sp->size);
> > +			int rc = write_to_device(priv, sp->sendp, sp->size);
> 
> This does not look appealing to me, neither the declaration in the middle
> of the function, nor the intiialization to the result of a complex
> expression, nor the separation of the call and the error checking code by
> a blank line.  There is nothing wrong with having the rc variable be
> declared at the the top of the function, in its normal place.

+1


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