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=-7.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_PASS,URIBL_BLOCKED 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 E2A2CC43387 for ; Tue, 1 Jan 2019 08:55:36 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id B70662080D for ; Tue, 1 Jan 2019 08:55:36 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728594AbfAAIzf (ORCPT ); Tue, 1 Jan 2019 03:55:35 -0500 Received: from mx2.suse.de ([195.135.220.15]:37298 "EHLO mx1.suse.de" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1727302AbfAAIzf (ORCPT ); Tue, 1 Jan 2019 03:55:35 -0500 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.220.254]) by mx1.suse.de (Postfix) with ESMTP id E79D6AD23; Tue, 1 Jan 2019 08:55:33 +0000 (UTC) Date: Tue, 01 Jan 2019 09:55:33 +0100 Message-ID: From: Takashi Iwai To: "Kangjie Lu" Cc: , "Jaroslav Kysela" , , Subject: Re: [PATCH] sound: sb: fix a missing check of snd_ctl_add In-Reply-To: <20181226014534.71083-1-kjlu@umn.edu> References: <20181226014534.71083-1-kjlu@umn.edu> User-Agent: Wanderlust/2.15.9 (Almost Unreal) SEMI/1.14.6 (Maruoka) FLIM/1.14.9 (=?UTF-8?B?R29qxY0=?=) APEL/10.8 Emacs/26 (x86_64-suse-linux-gnu) MULE/6.0 (HANACHIRUSATO) MIME-Version: 1.0 (generated by SEMI 1.14.6 - "Maruoka") Content-Type: text/plain; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, 26 Dec 2018 02:45:32 +0100, Kangjie Lu wrote: > > snd_ctl_add() could fail, so let's check its return value and return its > error code upstream upon failure. > > Signed-off-by: Kangjie Lu > --- > sound/isa/sb/sb16_main.c | 10 ++++++++-- > 1 file changed, 8 insertions(+), 2 deletions(-) > > diff --git a/sound/isa/sb/sb16_main.c b/sound/isa/sb/sb16_main.c > index 37e6ce7b0b13..c9b25dc1f78e 100644 > --- a/sound/isa/sb/sb16_main.c > +++ b/sound/isa/sb/sb16_main.c > @@ -879,8 +879,14 @@ int snd_sb16dsp_pcm(struct snd_sb *chip, int device) > snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_sb16_playback_ops); > snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_sb16_capture_ops); > > - if (chip->dma16 >= 0 && chip->dma8 != chip->dma16) > - snd_ctl_add(card, snd_ctl_new1(&snd_sb16_dma_control, chip)); > + if (chip->dma16 >= 0 && chip->dma8 != chip->dma16) { > + err = > + snd_ctl_add(card, > + snd_ctl_new1(&snd_sb16_dma_control, > + chip)); > + if (err < 0) > + return err; > + } > else > pcm->info_flags = SNDRV_PCM_INFO_HALF_DUPLEX; The code change looks OK, but could you fix the indentation and avoid unneeded line breaks, as well as the missing braces for else-block? Also, we keep "ALSA:" prefix for the subject line (except for ASoC ones). Please align with it. thanks, Takashi