From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from mail3-relais-sop.national.inria.fr ([192.134.164.104]:49444 "EHLO mail3-relais-sop.national.inria.fr" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754344AbaESK2q (ORCPT ); Mon, 19 May 2014 06:28:46 -0400 Date: Mon, 19 May 2014 18:28:38 +0800 (SGT) From: Julia Lawall To: Arend van Spriel cc: "John W. Linville" , linux-wireless@vger.kernel.org Subject: Re: [PATCH V2 12/13] brcmsmac: make return of 0 explicit In-Reply-To: <1400488169-6805-1-git-send-email-arend@broadcom.com> Message-ID: (sfid-20140519_122927_474487_AD684FBF) References: <1400488169-6805-1-git-send-email-arend@broadcom.com> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: linux-wireless-owner@vger.kernel.org List-ID: On Mon, 19 May 2014, Arend van Spriel wrote: > From: Julia Lawall > > Delete unnecessary local variable whose value is always 0 and that hides > the fact that the result is always 0. > > A simplified version of the semantic patch that fixes this problem is as > follows: (http://coccinelle.lip6.fr/) > > // > @r exists@ > local idexpression ret; > expression e; > position p; > @@ > > -ret = 0; > ... when != ret = e > return > - ret > + 0 > ; > // > > Signed-off-by: Julia Lawall > [arend@broadcom.com: make brcms_b_detach() a void function] > Signed-off-by: Arend van Spriel > --- > Hi Julia, > > Thanks for running this over brcmsmac driver. I took it a > step further. So this replaces your patch with Message-ID: > <1400473875-22228-13-git-send-email-Julia.Lawall@lip6.fr> OK, thanks. julia > Regards, > Arend > --- > drivers/net/wireless/brcm80211/brcmsmac/main.c | 13 ++++--------- > 1 file changed, 4 insertions(+), 9 deletions(-) > > diff --git a/drivers/net/wireless/brcm80211/brcmsmac/main.c b/drivers/net/wireless/brcm80211/brcmsmac/main.c > index 9417cb5..af8ba64 100644 > --- a/drivers/net/wireless/brcm80211/brcmsmac/main.c > +++ b/drivers/net/wireless/brcm80211/brcmsmac/main.c > @@ -4870,14 +4870,11 @@ static void brcms_c_detach_module(struct brcms_c_info *wlc) > /* > * low level detach > */ > -static int brcms_b_detach(struct brcms_c_info *wlc) > +static void brcms_b_detach(struct brcms_c_info *wlc) > { > uint i; > struct brcms_hw_band *band; > struct brcms_hardware *wlc_hw = wlc->hw; > - int callbacks; > - > - callbacks = 0; > > brcms_b_detach_dmapio(wlc_hw); > > @@ -4900,9 +4897,6 @@ static int brcms_b_detach(struct brcms_c_info *wlc) > ai_detach(wlc_hw->sih); > wlc_hw->sih = NULL; > } > - > - return callbacks; > - > } > > /* > @@ -4917,14 +4911,15 @@ static int brcms_b_detach(struct brcms_c_info *wlc) > */ > uint brcms_c_detach(struct brcms_c_info *wlc) > { > - uint callbacks = 0; > + uint callbacks; > > if (wlc == NULL) > return 0; > > - callbacks += brcms_b_detach(wlc); > + brcms_b_detach(wlc); > > /* delete software timers */ > + callbacks = 0; > if (!brcms_c_radio_monitor_stop(wlc)) > callbacks++; > > -- > 1.8.2.1 > >