Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752829AbZG1Kk2 (ORCPT ); Tue, 28 Jul 2009 06:40:28 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752209AbZG1Kk0 (ORCPT ); Tue, 28 Jul 2009 06:40:26 -0400 Received: from smtp.nokia.com ([192.100.122.230]:32244 "EHLO mgw-mx03.nokia.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752703AbZG1KkU (ORCPT ); Tue, 28 Jul 2009 06:40:20 -0400 From: Adrian Hunter To: Andrew Morton Cc: Jarkko Lavinen , Adrian Hunter , linux-omap Mailing List , Pierre Ossman , Denis Karpov , Matt Fleming , lkml Date: Tue, 28 Jul 2009 13:40:32 +0300 Message-Id: <20090728104032.2371.78474.sendpatchset@ahunter-laptop> In-Reply-To: <20090728103834.2371.65809.sendpatchset@ahunter-laptop> References: <20090728103834.2371.65809.sendpatchset@ahunter-laptop> Subject: [PATCH V2 16/32] omap_hsmmc: fix scatter-gather list sanity checking X-OriginalArrivalTime: 28 Jul 2009 10:40:04.0233 (UTC) FILETIME=[C4482790:01CA0F6F] X-Nokia-AV: Clean Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1912 Lines: 58 >From e37dab1cd1f8ac4bf4e2050a744a842d3d7ffdc1 Mon Sep 17 00:00:00 2001 From: Jarkko Lavinen Date: Fri, 24 Apr 2009 14:20:43 +0300 Subject: [PATCH] omap_hsmmc: fix scatter-gather list sanity checking Do not use host->dma_len when it is uninitialzed. Finish the request with an error if the mmc_omap_prepare_data() fails. Signed-off-by: Jarkko Lavinen Signed-off-by: Adrian Hunter --- drivers/mmc/host/omap_hsmmc.c | 14 ++++++++++++-- 1 files changed, 12 insertions(+), 2 deletions(-) diff --git a/drivers/mmc/host/omap_hsmmc.c b/drivers/mmc/host/omap_hsmmc.c index a9f7b74..6222940 100644 --- a/drivers/mmc/host/omap_hsmmc.c +++ b/drivers/mmc/host/omap_hsmmc.c @@ -871,7 +871,7 @@ mmc_omap_start_dma_transfer(struct mmc_omap_host *host, struct mmc_request *req) struct mmc_data *data = req->data; /* Sanity check: all the SG entries must be aligned by block size. */ - for (i = 0; i < host->dma_len; i++) { + for (i = 0; i < data->sg_len; i++) { struct scatterlist *sgl; sgl = data->sg + i; @@ -1014,10 +1014,20 @@ static int omap_mmc_disable(struct mmc_host *mmc, int lazy) static void omap_mmc_request(struct mmc_host *mmc, struct mmc_request *req) { struct mmc_omap_host *host = mmc_priv(mmc); + int err; WARN_ON(host->mrq != NULL); host->mrq = req; - mmc_omap_prepare_data(host, req); + err = mmc_omap_prepare_data(host, req); + if (err) { + req->cmd->error = err; + if (req->data) + req->data->error = err; + host->mrq = NULL; + mmc_request_done(mmc, req); + return; + } + mmc_omap_start_command(host, req->cmd, req->data); } -- 1.5.6.3 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/