From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-eopbgr690126.outbound.protection.outlook.com ([40.107.69.126]:51988 "EHLO NAM04-CO1-obe.outbound.protection.outlook.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1726922AbeIGFOP (ORCPT ); Fri, 7 Sep 2018 01:14:15 -0400 From: Sasha Levin To: "stable@vger.kernel.org" , "linux-kernel@vger.kernel.org" CC: Takashi Iwai , Sasha Levin Subject: [PATCH AUTOSEL 4.18 07/88] ALSA: pcm: Add __force to cast in snd_pcm_lib_read/write() Date: Fri, 7 Sep 2018 00:35:58 +0000 Message-ID: <20180907003547.57567-7-alexander.levin@microsoft.com> References: <20180907003547.57567-1-alexander.levin@microsoft.com> In-Reply-To: <20180907003547.57567-1-alexander.levin@microsoft.com> Content-Language: en-US Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Sender: stable-owner@vger.kernel.org List-ID: From: Takashi Iwai [ Upstream commit 95a48b7d4459948b6bacf809809cf01a7dc06d1d ] The snd_pcm_lib_read() and snd_pcm_lib_write() inline functions have the explicit cast from a user pointer to a kernel pointer, but they lacks of __force prefix. This fixes sparse warnings like: ./include/sound/pcm.h:1093:47: warning: cast removes address space of exp= ression Fixes: 68541213720d ("ALSA: pcm: Direct in-kernel read/write support") Signed-off-by: Takashi Iwai Signed-off-by: Sasha Levin --- include/sound/pcm.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/include/sound/pcm.h b/include/sound/pcm.h index e054c583d3b3..4d0e52177398 100644 --- a/include/sound/pcm.h +++ b/include/sound/pcm.h @@ -1089,14 +1089,14 @@ static inline snd_pcm_sframes_t snd_pcm_lib_write(struct snd_pcm_substream *substream, const void __user *buf, snd_pcm_uframes_t frames) { - return __snd_pcm_lib_xfer(substream, (void *)buf, true, frames, false); + return __snd_pcm_lib_xfer(substream, (void __force *)buf, true, frames, f= alse); } =20 static inline snd_pcm_sframes_t snd_pcm_lib_read(struct snd_pcm_substream *substream, void __user *buf, snd_pcm_uframes_t frames) { - return __snd_pcm_lib_xfer(substream, (void *)buf, true, frames, false); + return __snd_pcm_lib_xfer(substream, (void __force *)buf, true, frames, f= alse); } =20 static inline snd_pcm_sframes_t --=20 2.17.1