From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-15.8 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 83456C433B4 for ; Wed, 14 Apr 2021 17:57:09 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 4FA3B61168 for ; Wed, 14 Apr 2021 17:57:09 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1351272AbhDNR53 (ORCPT ); Wed, 14 Apr 2021 13:57:29 -0400 Received: from mail.kernel.org ([198.145.29.99]:35038 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234303AbhDNR51 (ORCPT ); Wed, 14 Apr 2021 13:57:27 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id 9150960FF0; Wed, 14 Apr 2021 17:57:05 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1618423026; bh=cQ9f4u2xR3uFXq5S5htMvUykddDB8bI00VAaR7ZaQ1Q=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=qy9wu/cxBjQjTqY7RD0xDdNPYZkaERYrUM11TFHPJn3SWjjBTn0YRN8xC5Jlqv6tI bMKCsazVI4rEk3y8sybmRIWDXWfITeLg4OTZmksiWoIiOG0bILBf7G9GtKHDVtLxHa s/xUunAuWw0DzlfEkpgkke88wBG6T/ztOs4eIVFI= Date: Wed, 14 Apr 2021 19:57:03 +0200 From: Greg Kroah-Hartman To: Dan Carpenter Cc: "Fabio M. De Francesco" , outreachy-kernel@googlegroups.com, linux-staging@lists.linux.dev, linux-kernel@vger.kernel.org, Matthew Wilcox , Julia Lawall Subject: Re: [Outreachy kernel] [PATCH v2] staging: rtl8723bs: Remove useless led_blink_hdl() Message-ID: References: <20210414162614.14867-1-fmdefrancesco@gmail.com> <20210414174809.GX6021@kadam> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20210414174809.GX6021@kadam> Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, Apr 14, 2021 at 08:48:09PM +0300, Dan Carpenter wrote: > On Wed, Apr 14, 2021 at 07:00:41PM +0200, Greg Kroah-Hartman wrote: > > On Wed, Apr 14, 2021 at 06:26:14PM +0200, Fabio M. De Francesco wrote: > > > Removed useless led_blink_hdl() prototype and definition. In wlancmds[] > > > the slot #60 is now set to NULL using the macro GEN_MLME_EXT_HANDLER. This > > > change has not unwanted side effects because the code in rtw_cmd.c checks > > > if the function pointer is valid before using it. > > > > > > Reported-by: Julia Lawall > > > Suggested-by: Dan Carpenter > > > Signed-off-by: Fabio M. De Francesco > > > --- > > > > > > Changes since v1: Corrected a bad solution to this issue that made use of > > > an unnecessary dummy function. > > > > > > drivers/staging/rtl8723bs/core/rtw_cmd.c | 2 +- > > > drivers/staging/rtl8723bs/core/rtw_mlme_ext.c | 9 --------- > > > drivers/staging/rtl8723bs/include/rtw_mlme_ext.h | 1 - > > > 3 files changed, 1 insertion(+), 11 deletions(-) > > > > > > diff --git a/drivers/staging/rtl8723bs/core/rtw_cmd.c b/drivers/staging/rtl8723bs/core/rtw_cmd.c > > > index 0297fbad7bce..f82dbd4f4c3d 100644 > > > --- a/drivers/staging/rtl8723bs/core/rtw_cmd.c > > > +++ b/drivers/staging/rtl8723bs/core/rtw_cmd.c > > > @@ -150,7 +150,7 @@ static struct cmd_hdl wlancmds[] = { > > > > > > GEN_MLME_EXT_HANDLER(0, h2c_msg_hdl) /*58*/ > > > GEN_MLME_EXT_HANDLER(sizeof(struct SetChannelPlan_param), set_chplan_hdl) /*59*/ > > > - GEN_MLME_EXT_HANDLER(sizeof(struct LedBlink_param), led_blink_hdl) /*60*/ > > > + GEN_MLME_EXT_HANDLER(0, NULL) /*60*/ > > > > Better, but you really do not need to keep this here, right? Remove the > > "led blink command" entirely, you didn't do that here. > > No, this is right. We have to put a NULL function pointer in the array > or the indexing will be off. But Fabio is correct that the struct > type should be removed. The indexing can be off, just remove the other place where the "command" is in the index and all is good as rebuilding will fix it. These are not external "values" we have to keep stable. This has been done for other drivers exactly like this, there are loads of "odd" commands in there that should not be. thanks, greg k-h