From patchwork Wed Jul 25 21:00:56 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Takashi Iwai X-Patchwork-Id: 10544751 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 220B217FD for ; Wed, 25 Jul 2018 21:02:23 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 110022AA06 for ; Wed, 25 Jul 2018 21:02:23 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 0597D2AA68; Wed, 25 Jul 2018 21:02:23 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.9 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_NONE autolearn=ham version=3.3.1 Received: from alsa0.perex.cz (alsa0.perex.cz [77.48.224.243]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 9974F2AA06 for ; Wed, 25 Jul 2018 21:02:22 +0000 (UTC) Received: from alsa0.perex.cz (localhost [127.0.0.1]) by alsa0.perex.cz (Postfix) with ESMTP id 6F00E2677D4; Wed, 25 Jul 2018 23:01:27 +0200 (CEST) X-Original-To: alsa-devel@alsa-project.org Delivered-To: alsa-devel@alsa-project.org Received: by alsa0.perex.cz (Postfix, from userid 1000) id 2280D26778C; Wed, 25 Jul 2018 23:01:11 +0200 (CEST) Received: from mx1.suse.de (mx2.suse.de [195.135.220.15]) by alsa0.perex.cz (Postfix) with ESMTP id D454D267784 for ; Wed, 25 Jul 2018 23:01:05 +0200 (CEST) X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay1.suse.de (unknown [195.135.220.254]) by mx1.suse.de (Postfix) with ESMTP id D4B78B380 for ; Wed, 25 Jul 2018 21:01:03 +0000 (UTC) From: Takashi Iwai To: alsa-devel@alsa-project.org Date: Wed, 25 Jul 2018 23:00:56 +0200 Message-Id: <20180725210057.18017-12-tiwai@suse.de> X-Mailer: git-send-email 2.18.0 In-Reply-To: <20180725210057.18017-1-tiwai@suse.de> References: <20180725210057.18017-1-tiwai@suse.de> Subject: [alsa-devel] [PATCH 11/12] ALSA: korg1212: Add __force annotation to cast in user-copy callbacks X-BeenThere: alsa-devel@alsa-project.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: "Alsa-devel mailing list for ALSA developers - http://www.alsa-project.org" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Errors-To: alsa-devel-bounces@alsa-project.org Sender: alsa-devel-bounces@alsa-project.org X-Virus-Scanned: ClamAV using ClamSMTP The user-copy callbacks in korg1212 driver contain the explicit cast from a user pointer to a kernel pointer, but they missed __force prefix. It's mandatory for converting between them. Spotted by sparse, a warning like: sound/pci/korg1212/korg1212.c:1329:33: warning: cast removes address space of expression Signed-off-by: Takashi Iwai --- sound/pci/korg1212/korg1212.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/sound/pci/korg1212/korg1212.c b/sound/pci/korg1212/korg1212.c index 4206ba44d8bb..4e189a93f475 100644 --- a/sound/pci/korg1212/korg1212.c +++ b/sound/pci/korg1212/korg1212.c @@ -1326,7 +1326,7 @@ static int snd_korg1212_copy_to(struct snd_pcm_substream *substream, } #endif if (in_kernel) - memcpy((void *)dst, src, size); + memcpy((__force void *)dst, src, size); else if (copy_to_user(dst, src, size)) return -EFAULT; src++; @@ -1365,7 +1365,7 @@ static int snd_korg1212_copy_from(struct snd_pcm_substream *substream, } #endif if (in_kernel) - memcpy((void *)dst, src, size); + memcpy(dst, (__force void *)src, size); else if (copy_from_user(dst, src, size)) return -EFAULT; dst++;