From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753543AbdLGMtB (ORCPT ); Thu, 7 Dec 2017 07:49:01 -0500 Received: from mail.linuxfoundation.org ([140.211.169.12]:56848 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753308AbdLGMs7 (ORCPT ); Thu, 7 Dec 2017 07:48:59 -0500 From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Hiromitsu Yamasaki , Simon Horman , Geert Uytterhoeven , Dirk Behme , Mark Brown , Sasha Levin Subject: [PATCH 3.18 04/26] spi: sh-msiof: Fix DMA transfer size check Date: Thu, 7 Dec 2017 13:48:17 +0100 Message-Id: <20171207124655.271479255@linuxfoundation.org> X-Mailer: git-send-email 2.15.1 In-Reply-To: <20171207124654.669583826@linuxfoundation.org> References: <20171207124654.669583826@linuxfoundation.org> User-Agent: quilt/0.65 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 3.18-stable review patch. If anyone has any objections, please let me know. ------------------ From: Hiromitsu Yamasaki [ Upstream commit 36735783fdb599c94b9c86824583df367c65900b ] DMA supports 32-bit words only, even if BITLEN1 of SITMDR2 register is 16bit. Fixes: b0d0ce8b6b91 ("spi: sh-msiof: Add DMA support") Signed-off-by: Hiromitsu Yamasaki Signed-off-by: Simon Horman Acked-by: Geert Uytterhoeven Acked-by: Dirk Behme Signed-off-by: Mark Brown Signed-off-by: Sasha Levin Signed-off-by: Greg Kroah-Hartman --- drivers/spi/spi-sh-msiof.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/drivers/spi/spi-sh-msiof.c +++ b/drivers/spi/spi-sh-msiof.c @@ -818,7 +818,7 @@ static int sh_msiof_transfer_one(struct break; copy32 = copy_bswap32; } else if (bits <= 16) { - if (l & 1) + if (l & 3) break; copy32 = copy_wswap32; } else {