From patchwork Sun Nov 11 20:23:55 2018
Content-Type: text/plain; charset="utf-8"
MIME-Version: 1.0
Content-Transfer-Encoding: 7bit
X-Patchwork-Submitter: Stefan Wahren <stefan.wahren@i2se.com>
X-Patchwork-Id: 10677861
Return-Path:
<linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org>
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 3920A14BD
for <patchwork-linux-arm@patchwork.kernel.org>;
Sun, 11 Nov 2018 20:26:49 +0000 (UTC)
Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1])
by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 2BB86296F9
for <patchwork-linux-arm@patchwork.kernel.org>;
Sun, 11 Nov 2018 20:26:49 +0000 (UTC)
Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486)
id 201BB296FF; Sun, 11 Nov 2018 20:26:49 +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=-3.6 required=2.0 tests=BAYES_00,DKIM_SIGNED,
DKIM_VALID,MAILING_LIST_MULTI,RCVD_IN_DNSWL_LOW autolearn=ham version=3.3.1
Received: from bombadil.infradead.org (bombadil.infradead.org
[198.137.202.133])
(using TLSv1.2 with cipher AES256-GCM-SHA384 (256/256 bits))
(No client certificate requested)
by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id CB68B296F9
for <patchwork-linux-arm@patchwork.kernel.org>;
Sun, 11 Nov 2018 20:26:48 +0000 (UTC)
DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed;
d=lists.infradead.org; s=bombadil.20170209; h=Sender:
Content-Transfer-Encoding:Content-Type:MIME-Version:Cc:List-Subscribe:
List-Help:List-Post:List-Archive:List-Unsubscribe:List-Id:References:
In-Reply-To:Message-Id:Date:Subject:To:From:Reply-To:Content-ID:
Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc
:Resent-Message-ID:List-Owner;
bh=Tt5EgaFovmpaVblg1vCoUL5KFNHfoZnIbMjvuoDpH+A=; b=YkFJNA/0JeWm1W0agi1fs65bw4
MuaP5Xd9dNXoiUTsnX7DaDk+CMixGON/AQSwqrRmPptbNpeKcoQ2xx08c2EyKnpDYGfzQ/HhclUjO
ZNhvf7TNzQknjeJ00NlJBnp1PwS4Mj9YZsHHTzC8GdMwzQ1IsBTh7F+j4sDJfF78FjjC14+nCgrjS
RiFJhoPq/9ddurP5XoM0scxQ6AziagQA3OPOalJK16OvXnyjBnZoFATKWhJ4ZbShRh6nlQoynEgIj
5WWVXJYzjquyUo2NV0tTq2QO/LSzrYscljqgOp7Fuu2YJeAa2QMRbFddcqempXwT0DDHLnFEvJ9kM
9VcVHbzw==;
Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org)
by bombadil.infradead.org with esmtp (Exim 4.90_1 #2 (Red Hat Linux))
id 1gLwJh-0005jD-Dj; Sun, 11 Nov 2018 20:26:45 +0000
Received: from merlin.infradead.org ([2001:8b0:10b:1231::1])
by bombadil.infradead.org with esmtps (Exim 4.90_1 #2 (Red Hat Linux))
id 1gLwHw-0002cc-12; Sun, 11 Nov 2018 20:24:56 +0000
DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed;
d=infradead.org; s=merlin.20170209; h=References:In-Reply-To:Message-Id:Date:
Subject:Cc:To:From:Sender:Reply-To:MIME-Version:Content-Type:
Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date:
Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Id:
List-Help:List-Unsubscribe:List-Subscribe:List-Post:List-Owner:List-Archive;
bh=9cNmmn25bR2zeN1vbgdjE8/Y0JXpSDhSkPM5GZxTcOo=; b=mF/YFu0vAFm8Cr1Ty9Lek+w6Y
8FRR01cy8fLjmnnNz+SVBTeEx6C/eTg7Q8SLdeJR6ql3cIeepC0WkIWJnFUCdWJ7fDkL5686pgjS7
2+4K5o5D1t8yank/9kA464gHTrwO0u4FUse+XWEoSPiET3SmZXXsHAQkBgfzIh2gyckpB0wir7K6h
tY5UPKoEDSbOa7uFKvARA6LA+0p+LS3mrZMFPQedoC0Uir/fMY8YYdY2Pc+vMi2nPXQ9LJ0fQ1dSe
wqYoeLdrTYjWL2XRMPohx95JxWvxfmgEhxXIFm6RFJvO9WItczYLy90wYmLHBvv9vyVUTo+nsLmvK
/EjccIV6w==;
Received: from mout.kundenserver.de ([212.227.126.130])
by merlin.infradead.org with esmtps (Exim 4.90_1 #2 (Red Hat Linux))
id 1gLwHt-0001en-8D; Sun, 11 Nov 2018 20:24:54 +0000
Received: from localhost.localdomain ([37.4.249.153]) by
mrelayeu.kundenserver.de (mreue012 [212.227.15.167]) with ESMTPSA (Nemesis)
id 1Mw9oq-1fWAVX1zBk-00s3Fm; Sun, 11 Nov 2018 21:24:31 +0100
From: Stefan Wahren <stefan.wahren@i2se.com>
To: Eric Anholt <eric@anholt.net>, Florian Fainelli <f.fainelli@gmail.com>,
Ulf Hansson <ulf.hansson@linaro.org>
Subject: [PATCH V2 3/7] mmc: bcm2835: Release DMA channel on driver unload
Date: Sun, 11 Nov 2018 21:23:55 +0100
Message-Id: <1541967839-2847-4-git-send-email-stefan.wahren@i2se.com>
X-Mailer: git-send-email 2.7.4
In-Reply-To: <1541967839-2847-1-git-send-email-stefan.wahren@i2se.com>
References: <1541967839-2847-1-git-send-email-stefan.wahren@i2se.com>
X-Provags-ID: V03:K1:vlovEOP4OCkjuj6JaOkYwfmgG3Bal1ftfBxnk4DH9YyAICNcm4/
BpDpxF7lig5Fm91zl9duBF8Z2zsadWWX/cwUNHvjuCQzK6hM1miYmPrje9c2so98xLmVH42
HbkSAtFcHSGlfkxFrEQpCHQq6PbLfHsRrCjnzfeVe04uliFFd5uM+615obhLT+kxiXePpJc
itTAXDImHIb6ZbKx/ZkrA==
X-UI-Out-Filterresults: notjunk:1;V01:K0:SzTlMsQfrIw=:CfsWr+obS+SWBvm2OG7mgE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X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3
X-CRM114-CacheID: sfid-20181111_152453_636383_8A225C26
X-CRM114-Status: GOOD ( 10.02 )
X-BeenThere: linux-arm-kernel@lists.infradead.org
X-Mailman-Version: 2.1.21
Precedence: list
List-Id: <linux-arm-kernel.lists.infradead.org>
List-Unsubscribe:
<http://lists.infradead.org/mailman/options/linux-arm-kernel>,
<mailto:linux-arm-kernel-request@lists.infradead.org?subject=unsubscribe>
List-Archive: <http://lists.infradead.org/pipermail/linux-arm-kernel/>
List-Post: <mailto:linux-arm-kernel@lists.infradead.org>
List-Help: <mailto:linux-arm-kernel-request@lists.infradead.org?subject=help>
List-Subscribe:
<http://lists.infradead.org/mailman/listinfo/linux-arm-kernel>,
<mailto:linux-arm-kernel-request@lists.infradead.org?subject=subscribe>
Cc: Stefan Wahren <stefan.wahren@i2se.com>,
Phil Elwell <phil@raspberrypi.org>,
linux-mmc@vger.kernel.org, linux-rpi-kernel@lists.infradead.org,
Michal Suchanek <msuchanek@suse.de>, linux-arm-kernel@lists.infradead.org
MIME-Version: 1.0
Content-Type: text/plain; charset="us-ascii"
Sender: "linux-arm-kernel" <linux-arm-kernel-bounces@lists.infradead.org>
Errors-To:
linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org
X-Virus-Scanned: ClamAV using ClamSMTP
We need to release the slave DMA channel during driver unload.
Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
---
drivers/mmc/host/bcm2835.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/mmc/host/bcm2835.c b/drivers/mmc/host/bcm2835.c
index a251be2..45724ef 100644
--- a/drivers/mmc/host/bcm2835.c
+++ b/drivers/mmc/host/bcm2835.c
@@ -1457,6 +1457,9 @@ static int bcm2835_remove(struct platform_device *pdev)
cancel_work_sync(&host->dma_work);
cancel_delayed_work_sync(&host->timeout_work);
+ if (host->dma_chan_rxtx)
+ dma_release_channel(host->dma_chan_rxtx);
+
mmc_free_host(host->mmc);
platform_set_drvdata(pdev, NULL);
From patchwork Sun Nov 11 20:23:56 2018
Content-Type: text/plain; charset="utf-8"
MIME-Version: 1.0
Content-Transfer-Encoding: 7bit
X-Patchwork-Submitter: Stefan Wahren <stefan.wahren@i2se.com>
X-Patchwork-Id: 10677851
Return-Path:
<linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org>
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 9E68D14BD
for <patchwork-linux-arm@patchwork.kernel.org>;
Sun, 11 Nov 2018 20:25:23 +0000 (UTC)
Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1])
by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 90CA42969C
for <patchwork-linux-arm@patchwork.kernel.org>;
Sun, 11 Nov 2018 20:25:23 +0000 (UTC)
Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486)
id 8516B296F9; Sun, 11 Nov 2018 20:25:23 +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=-3.6 required=2.0 tests=BAYES_00,DKIM_SIGNED,
DKIM_VALID,MAILING_LIST_MULTI,RCVD_IN_DNSWL_LOW autolearn=ham version=3.3.1
Received: from bombadil.infradead.org (bombadil.infradead.org
[198.137.202.133])
(using TLSv1.2 with cipher AES256-GCM-SHA384 (256/256 bits))
(No client certificate requested)
by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 3A73F2969C
for <patchwork-linux-arm@patchwork.kernel.org>;
Sun, 11 Nov 2018 20:25:23 +0000 (UTC)
DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed;
d=lists.infradead.org; s=bombadil.20170209; h=Sender:
Content-Transfer-Encoding:Content-Type:MIME-Version:Cc:List-Subscribe:
List-Help:List-Post:List-Archive:List-Unsubscribe:List-Id:References:
In-Reply-To:Message-Id:Date:Subject:To:From:Reply-To:Content-ID:
Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc
:Resent-Message-ID:List-Owner;
bh=w/Gzy1FdXFoZZY/Bdgo4ocm33xnvBLknyOEQrYDJjx8=; b=AnOOH/JlAJanb/zGv8Tbhr5LUU
zhx/OjHDpTA+1ZN4gwSeeDWVgEHvlQ5b700sWdpjiUYxzkXMAtqOBCK20C8Cz7VIX9OtfFjhm43QL
Xn2eIdUXsmnEjJ4vN+c2GJ200/15T1/0eGCESCALXHcN5dVIfQTEXzzhuCLfDTra0py+5hc8tXRiZ
VeEkvMwNwmyYOMh7qoN4/GtOx96Y+Swupzns5QIJnWRuyu4kcFPTRiRQI7vOLJb6ahc53c/VWEGn5
CQKE7XPssSzcb8TnIRBhX5ChXO5V5J7hV8I6Mo467mbYpK1W7LtEkplA2JhZKcRJ3PkFXIya3Plqp
gLf70yzQ==;
Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org)
by bombadil.infradead.org with esmtp (Exim 4.90_1 #2 (Red Hat Linux))
id 1gLwIE-0003TU-1P; Sun, 11 Nov 2018 20:25:14 +0000
Received: from casper.infradead.org ([2001:8b0:10b:1236::1])
by bombadil.infradead.org with esmtps (Exim 4.90_1 #2 (Red Hat Linux))
id 1gLwHv-0002cV-24; Sun, 11 Nov 2018 20:24:55 +0000
DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed;
d=infradead.org; s=casper.20170209; h=References:In-Reply-To:Message-Id:Date:
Subject:Cc:To:From:Sender:Reply-To:MIME-Version:Content-Type:
Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date:
Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Id:
List-Help:List-Unsubscribe:List-Subscribe:List-Post:List-Owner:List-Archive;
bh=zHxxLEQsiHEhh7PVXEVNqUUxYM7wDjcAIJtcwJyNRQo=; b=DOPYo4t1y5vxpvZmFdW6hMyoZ
pBOQEji74bYHR5OwkWKuoDPpZlQiQRU21mZwp08MZHufSo0j5CcZapSY9kRCb5KszFqO98vRCYDCW
XP8SZxnfZV1eZ8OEGp82f8cQzrGl2FOpjKZNP1KX+0w2ibjMqcqZHppwTME1L96PAqzdexyzWJdGd
ofA4EK/v+6FQohG4RSPQX465ZGIiui3r/C1O0WKGVim2eK+cE1wVK88X+rhHk1BoNRP/5MOpaX/v3
O51RexHgFZ+0YlkVQTCb/Zfgd93BZb5XL/ewyaDlkmVuqCpSWOgj5jgrSkad88yRtx9A29PIbzWdB
JahBPzjOA==;
Received: from mout.kundenserver.de ([212.227.126.187])
by casper.infradead.org with esmtps (Exim 4.90_1 #2 (Red Hat Linux))
id 1gLwHr-000149-RY; Sun, 11 Nov 2018 20:24:53 +0000
Received: from localhost.localdomain ([37.4.249.153]) by
mrelayeu.kundenserver.de (mreue012 [212.227.15.167]) with ESMTPSA (Nemesis)
id 1MvsyF-1fX0UR1Q9v-00ssSz; Sun, 11 Nov 2018 21:24:32 +0100
From: Stefan Wahren <stefan.wahren@i2se.com>
To: Eric Anholt <eric@anholt.net>, Florian Fainelli <f.fainelli@gmail.com>,
Ulf Hansson <ulf.hansson@linaro.org>
Subject: [PATCH V2 4/7] mmc: bcm2835: Avoid possible races on data requests
Date: Sun, 11 Nov 2018 21:23:56 +0100
Message-Id: <1541967839-2847-5-git-send-email-stefan.wahren@i2se.com>
X-Mailer: git-send-email 2.7.4
In-Reply-To: <1541967839-2847-1-git-send-email-stefan.wahren@i2se.com>
References: <1541967839-2847-1-git-send-email-stefan.wahren@i2se.com>
X-Provags-ID: V03:K1:ZLc6V0DmkpQIP44hYwa3HseRh7CvRoA9oKdzKs8yIsk8165B4Wj
xh/v/qDrvpHbc6Mo7+ESlJoA7iV2QBpKIYXkV+l+LxP1hUGn0iO44fmLP2qBvLJtZvx/Ojh
06wOufM/u9ZWw0FVd6z87NbwhQC+r0Hdx+GWumlgWYq9lppFAMYe+6pIqLKFwesssADK3OS
0MJwlz/he/7bB9DxhEcnw==
X-UI-Out-Filterresults: notjunk:1;V01:K0:lLFqbCq1JEc=:4dOYlMJrif5X850MHJ4IKv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X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3
X-CRM114-CacheID: sfid-20181111_202451_956461_704341B1
X-CRM114-Status: GOOD ( 11.96 )
X-BeenThere: linux-arm-kernel@lists.infradead.org
X-Mailman-Version: 2.1.21
Precedence: list
List-Id: <linux-arm-kernel.lists.infradead.org>
List-Unsubscribe:
<http://lists.infradead.org/mailman/options/linux-arm-kernel>,
<mailto:linux-arm-kernel-request@lists.infradead.org?subject=unsubscribe>
List-Archive: <http://lists.infradead.org/pipermail/linux-arm-kernel/>
List-Post: <mailto:linux-arm-kernel@lists.infradead.org>
List-Help: <mailto:linux-arm-kernel-request@lists.infradead.org?subject=help>
List-Subscribe:
<http://lists.infradead.org/mailman/listinfo/linux-arm-kernel>,
<mailto:linux-arm-kernel-request@lists.infradead.org?subject=subscribe>
Cc: Stefan Wahren <stefan.wahren@i2se.com>,
Phil Elwell <phil@raspberrypi.org>,
linux-mmc@vger.kernel.org, linux-rpi-kernel@lists.infradead.org,
Michal Suchanek <msuchanek@suse.de>, linux-arm-kernel@lists.infradead.org
MIME-Version: 1.0
Content-Type: text/plain; charset="us-ascii"
Sender: "linux-arm-kernel" <linux-arm-kernel-bounces@lists.infradead.org>
Errors-To:
linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org
X-Virus-Scanned: ClamAV using ClamSMTP
There are two accesses on the data requests which are not protected by
the mutex. So fix this accordingly.
Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
---
drivers/mmc/host/bcm2835.c | 10 ++++++----
1 file changed, 6 insertions(+), 4 deletions(-)
diff --git a/drivers/mmc/host/bcm2835.c b/drivers/mmc/host/bcm2835.c
index 45724ef..1c60798 100644
--- a/drivers/mmc/host/bcm2835.c
+++ b/drivers/mmc/host/bcm2835.c
@@ -1064,10 +1064,12 @@ static void bcm2835_dma_complete_work(struct work_struct *work)
{
struct bcm2835_host *host =
container_of(work, struct bcm2835_host, dma_work);
- struct mmc_data *data = host->data;
+ struct mmc_data *data;
mutex_lock(&host->mutex);
+ data = host->data;
+
if (host->dma_chan) {
dma_unmap_sg(host->dma_chan->device->dev,
data->sg, data->sg_len,
@@ -1192,9 +1194,6 @@ static void bcm2835_request(struct mmc_host *mmc, struct mmc_request *mrq)
return;
}
- if (host->use_dma && mrq->data && (mrq->data->blocks > PIO_THRESHOLD))
- bcm2835_prepare_dma(host, mrq->data);
-
mutex_lock(&host->mutex);
WARN_ON(host->mrq);
@@ -1218,6 +1217,9 @@ static void bcm2835_request(struct mmc_host *mmc, struct mmc_request *mrq)
return;
}
+ if (host->use_dma && mrq->data && (mrq->data->blocks > PIO_THRESHOLD))
+ bcm2835_prepare_dma(host, mrq->data);
+
host->use_sbc = !!mrq->sbc && host->mrq->data &&
(host->mrq->data->flags & MMC_DATA_READ);
if (host->use_sbc) {
From patchwork Sun Nov 11 20:23:57 2018
Content-Type: text/plain; charset="utf-8"
MIME-Version: 1.0
Content-Transfer-Encoding: 7bit
X-Patchwork-Submitter: Stefan Wahren <stefan.wahren@i2se.com>
X-Patchwork-Id: 10677855
Return-Path:
<linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org>
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 B72A114BD
for <patchwork-linux-arm@patchwork.kernel.org>;
Sun, 11 Nov 2018 20:25:55 +0000 (UTC)
Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1])
by mail.wl.linuxfoundation.org (Postfix) with ESMTP id A8FBF2969C
for <patchwork-linux-arm@patchwork.kernel.org>;
Sun, 11 Nov 2018 20:25:55 +0000 (UTC)
Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486)
id 9BA4C296F9; Sun, 11 Nov 2018 20:25:55 +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=-3.6 required=2.0 tests=BAYES_00,DKIM_SIGNED,
DKIM_VALID,MAILING_LIST_MULTI,RCVD_IN_DNSWL_LOW autolearn=ham version=3.3.1
Received: from bombadil.infradead.org (bombadil.infradead.org
[198.137.202.133])
(using TLSv1.2 with cipher AES256-GCM-SHA384 (256/256 bits))
(No client certificate requested)
by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 3E5132969C
for <patchwork-linux-arm@patchwork.kernel.org>;
Sun, 11 Nov 2018 20:25:55 +0000 (UTC)
DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed;
d=lists.infradead.org; s=bombadil.20170209; h=Sender:
Content-Transfer-Encoding:Content-Type:MIME-Version:Cc:List-Subscribe:
List-Help:List-Post:List-Archive:List-Unsubscribe:List-Id:References:
In-Reply-To:Message-Id:Date:Subject:To:From:Reply-To:Content-ID:
Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc
:Resent-Message-ID:List-Owner;
bh=MrabV/LatQSzA8nWJUbmpw6Z66+qt6yLE3DwaiTeQME=; b=C6Tp4s3/ByUA6gEAyLZXReuA6C
id+fWgoxsQzr2ckrLAgv48ru1ay5ieY89k0dCyY21EmJ+7DdHsVtlf8AU/pp7zc2v8WXZVjGc0Wre
YFPO0X47D1Ph+jrOAJ4EldEXPIk7KudaNJMF85Kayhvj4ehjIH10qF4pNR/GnBs5K4TVn0fqm5wkL
qXh8X60lZ8wzc/1kwor55UBVg6KsCr9RWAKxqVzvsq18LS5kgCLj32wFbWPdHWqEYYdMktOZnA+TZ
3yAKeFvxhZStgwUorKa3+KsbHzV7DRegF+0oVmQTR7IDEwQ7bsAjkCLS8MlMcgIBJbaIm70mraboJ
vf7ML3xg==;
Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org)
by bombadil.infradead.org with esmtp (Exim 4.90_1 #2 (Red Hat Linux))
id 1gLwIk-0004lM-CU; Sun, 11 Nov 2018 20:25:46 +0000
Received: from merlin.infradead.org ([2001:8b0:10b:1231::1])
by bombadil.infradead.org with esmtps (Exim 4.90_1 #2 (Red Hat Linux))
id 1gLwHv-0002cW-I3; Sun, 11 Nov 2018 20:24:55 +0000
DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed;
d=infradead.org; s=merlin.20170209; h=References:In-Reply-To:Message-Id:Date:
Subject:Cc:To:From:Sender:Reply-To:MIME-Version:Content-Type:
Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date:
Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Id:
List-Help:List-Unsubscribe:List-Subscribe:List-Post:List-Owner:List-Archive;
bh=Mk5UAGVXcnL2nHBZi5EjPPjTnNXOrWMlTyZHVyM9yOc=; b=b2656ew26XY6iOFE1AUGP51qB
FsWiQqitmJrrBacXDcwxx4b77oSYgvwb2wnBa7LE5GPdb48OBeCpb++0pRdU6LH1mLGY75l+SJkTE
fuEGG9nI+c7ylMsmuHzyIug+IcRMttr9Rv+lguVfxj+05E3Mug1Yjde0yV4DeeaDQcrcBW+cDxPD+
zBUTdh155DbVSr//DRSSJT3w5iirXL6DmNZX9aH6RIz8prxs5PBfYuAKmZD3JkHHBosP2MuOzyfCN
UW3Jmr2T/p8nGj4c5ZgHVcwtYTZ8zbEVSNSshLyLCmRvAvbWw9R7i04nOAZFMDwJ+nJrAOzc4JEyR
Bd0redZPw==;
Received: from mout.kundenserver.de ([212.227.126.133])
by merlin.infradead.org with esmtps (Exim 4.90_1 #2 (Red Hat Linux))
id 1gLwHs-0001ej-CS; Sun, 11 Nov 2018 20:24:53 +0000
Received: from localhost.localdomain ([37.4.249.153]) by
mrelayeu.kundenserver.de (mreue012 [212.227.15.167]) with ESMTPSA (Nemesis)
id 1MMY9X-1g6LF00fdn-00JXiP; Sun, 11 Nov 2018 21:24:33 +0100
From: Stefan Wahren <stefan.wahren@i2se.com>
To: Eric Anholt <eric@anholt.net>, Florian Fainelli <f.fainelli@gmail.com>,
Ulf Hansson <ulf.hansson@linaro.org>
Subject: [PATCH V2 5/7] mmc: bcm2835: Terminate timeout work synchronously
Date: Sun, 11 Nov 2018 21:23:57 +0100
Message-Id: <1541967839-2847-6-git-send-email-stefan.wahren@i2se.com>
X-Mailer: git-send-email 2.7.4
In-Reply-To: <1541967839-2847-1-git-send-email-stefan.wahren@i2se.com>
References: <1541967839-2847-1-git-send-email-stefan.wahren@i2se.com>
X-Provags-ID: V03:K1:qNd5m8hilSIHpAhx5FhJUiaXDU7SU8xPGLPlkrJoWXv/UllNu+f
Z6MfgrWvjWpqxWfwowcV/8ImoMmyMh4JRxG2YbMxQXqKPs3IgT+uHUy/D8FHMMViil6gbjf
tQPTiuVKuzVualYbGsrj61hk9tmirGv3Idxmj6a5LmZWyqtBs+N/8+IESPXYZMMNePlqxh4
Dqnr1Ar9jhW2oYDHZeh4A==
X-UI-Out-Filterresults: notjunk:1;V01:K0:lvp7zKY2iuQ=:cBGp0NsOhdh4ZLCUkdL5pd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X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3
X-CRM114-CacheID: sfid-20181111_152452_685437_9729AF90
X-CRM114-Status: GOOD ( 11.39 )
X-BeenThere: linux-arm-kernel@lists.infradead.org
X-Mailman-Version: 2.1.21
Precedence: list
List-Id: <linux-arm-kernel.lists.infradead.org>
List-Unsubscribe:
<http://lists.infradead.org/mailman/options/linux-arm-kernel>,
<mailto:linux-arm-kernel-request@lists.infradead.org?subject=unsubscribe>
List-Archive: <http://lists.infradead.org/pipermail/linux-arm-kernel/>
List-Post: <mailto:linux-arm-kernel@lists.infradead.org>
List-Help: <mailto:linux-arm-kernel-request@lists.infradead.org?subject=help>
List-Subscribe:
<http://lists.infradead.org/mailman/listinfo/linux-arm-kernel>,
<mailto:linux-arm-kernel-request@lists.infradead.org?subject=subscribe>
Cc: Stefan Wahren <stefan.wahren@i2se.com>,
Phil Elwell <phil@raspberrypi.org>,
linux-mmc@vger.kernel.org, linux-rpi-kernel@lists.infradead.org,
Michal Suchanek <msuchanek@suse.de>, linux-arm-kernel@lists.infradead.org
MIME-Version: 1.0
Content-Type: text/plain; charset="us-ascii"
Sender: "linux-arm-kernel" <linux-arm-kernel-bounces@lists.infradead.org>
Errors-To:
linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org
X-Virus-Scanned: ClamAV using ClamSMTP
It's better to make sure that the timeout work is really terminated
before calling mmc_request_done.
Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
---
drivers/mmc/host/bcm2835.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/mmc/host/bcm2835.c b/drivers/mmc/host/bcm2835.c
index 1c60798..2c7589f 100644
--- a/drivers/mmc/host/bcm2835.c
+++ b/drivers/mmc/host/bcm2835.c
@@ -608,7 +608,7 @@ static void bcm2835_finish_request(struct bcm2835_host *host)
struct dma_chan *terminate_chan = NULL;
struct mmc_request *mrq;
- cancel_delayed_work(&host->timeout_work);
+ cancel_delayed_work_sync(&host->timeout_work);
mrq = host->mrq;
From patchwork Sun Nov 11 20:23:58 2018
Content-Type: text/plain; charset="utf-8"
MIME-Version: 1.0
Content-Transfer-Encoding: 7bit
X-Patchwork-Submitter: Stefan Wahren <stefan.wahren@i2se.com>
X-Patchwork-Id: 10677853
Return-Path:
<linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org>
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 B8F61139B
for <patchwork-linux-arm@patchwork.kernel.org>;
Sun, 11 Nov 2018 20:25:31 +0000 (UTC)
Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1])
by mail.wl.linuxfoundation.org (Postfix) with ESMTP id ABACE2969C
for <patchwork-linux-arm@patchwork.kernel.org>;
Sun, 11 Nov 2018 20:25:31 +0000 (UTC)
Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486)
id 9FBC6296F9; Sun, 11 Nov 2018 20:25:31 +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=-3.6 required=2.0 tests=BAYES_00,DKIM_SIGNED,
DKIM_VALID,MAILING_LIST_MULTI,RCVD_IN_DNSWL_LOW autolearn=ham version=3.3.1
Received: from bombadil.infradead.org (bombadil.infradead.org
[198.137.202.133])
(using TLSv1.2 with cipher AES256-GCM-SHA384 (256/256 bits))
(No client certificate requested)
by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 4A58B2969C
for <patchwork-linux-arm@patchwork.kernel.org>;
Sun, 11 Nov 2018 20:25:31 +0000 (UTC)
DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed;
d=lists.infradead.org; s=bombadil.20170209; h=Sender:
Content-Transfer-Encoding:Content-Type:MIME-Version:Cc:List-Subscribe:
List-Help:List-Post:List-Archive:List-Unsubscribe:List-Id:References:
In-Reply-To:Message-Id:Date:Subject:To:From:Reply-To:Content-ID:
Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc
:Resent-Message-ID:List-Owner;
bh=hLouXFNypHlFaQAINMwgzkBeirVP1RY0gAHWHAnuLpo=; b=rmTlZsugtWGOssKkbRRBUkkaMC
1KnpesZRiXcQ3pdco/0rDLTQmYxTCEUjV4xsBFaLiaoMeezFdRRBXGZeSPhk38338Y976XJ4cVMz2
XEbMflV3FhK8eHtirh7evoVdHR93K8s2TnFG5umUjZP9CNK6jB1uaKvNeOQt7ysjNFYI/o6mSAWQ8
96SikljKpBqFYT7sfjGMWWxEneZVIcw0uQMa+gaOxVIiXtG4BrxHOs3Fw9RjRuZ5eKEU1p3gCQVbu
XbZW1eUFOHav2KoX7nPYCjHgWhH6YwMTgEBBAnxobbfRHrCEpD9qTd5jujkCLDGdlUfcIs0x0gwMY
NVzKWO6w==;
Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org)
by bombadil.infradead.org with esmtp (Exim 4.90_1 #2 (Red Hat Linux))
id 1gLwIR-0004Ov-6u; Sun, 11 Nov 2018 20:25:27 +0000
Received: from merlin.infradead.org ([2001:8b0:10b:1231::1])
by bombadil.infradead.org with esmtps (Exim 4.90_1 #2 (Red Hat Linux))
id 1gLwHv-0002cX-I3; Sun, 11 Nov 2018 20:24:55 +0000
DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed;
d=infradead.org; s=merlin.20170209; h=References:In-Reply-To:Message-Id:Date:
Subject:Cc:To:From:Sender:Reply-To:MIME-Version:Content-Type:
Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date:
Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Id:
List-Help:List-Unsubscribe:List-Subscribe:List-Post:List-Owner:List-Archive;
bh=EGvrhwUaJ7ExcJvbLK8/AQ0rd/CXDt+a3em7ick8oO0=; b=hfLWj/nwTsxPLUALv1QKEYerW
kjTYzuw+nLWWi3Jmk4P9vRYMn7+DaGgrbi72/tY2ByngSSImu0PrCS8lm9Ptuq6yXd6tYsNVfzM2v
rmYwqdSBQg1JTzAY2Z9nFvV3PB1XFF36Lt1oFlkORRtQJSII2YZBaRJeyhjLpTqzBUwi4KgcWj56K
R6ymka+uGJPQ+KHwaOaS67glzE2ADOBMchS7gZu6WtPJEtwU5d7FMyWWPFV7PM4wKFS5Mkk59+9ee
hj7e7Zi/7YhnCEfVfZf7C6h6ejiW9YdnMadgdZttuh9DdLGUYVyGszdcNAwmEbpJUSvqM0MxYOBG7
/ZftqWKLA==;
Received: from mout.kundenserver.de ([212.227.126.130])
by merlin.infradead.org with esmtps (Exim 4.90_1 #2 (Red Hat Linux))
id 1gLwHs-0001em-CO; Sun, 11 Nov 2018 20:24:53 +0000
Received: from localhost.localdomain ([37.4.249.153]) by
mrelayeu.kundenserver.de (mreue012 [212.227.15.167]) with ESMTPSA (Nemesis)
id 1MvsyF-1fX0UQ3835-00ssSz; Sun, 11 Nov 2018 21:24:33 +0100
From: Stefan Wahren <stefan.wahren@i2se.com>
To: Eric Anholt <eric@anholt.net>, Florian Fainelli <f.fainelli@gmail.com>,
Ulf Hansson <ulf.hansson@linaro.org>
Subject: [PATCH V2 6/7] mmc: bcm2835: Refactor dma_map_sg handling
Date: Sun, 11 Nov 2018 21:23:58 +0100
Message-Id: <1541967839-2847-7-git-send-email-stefan.wahren@i2se.com>
X-Mailer: git-send-email 2.7.4
In-Reply-To: <1541967839-2847-1-git-send-email-stefan.wahren@i2se.com>
References: <1541967839-2847-1-git-send-email-stefan.wahren@i2se.com>
X-Provags-ID: V03:K1:Sla5WKzJYGbilks4eIirHiMlx29aYsbN7KwNBzyZekQFCAy53V8
1SG4Lh3Be8yGw2tWhcGIWU4+p6Ui+o/TdYr+msz83Y0Sz252M6RAloy6wfmI9j/ONOhpARN
+Df5870IhZ0IcFsZwP4UNPyitLHHEtB7F0h3fH1ljMmy4qfxVgId5TqXkESoEci3lMhK7jI
tJt2agPN6ETkDIC1k0S1Q==
X-UI-Out-Filterresults: notjunk:1;V01:K0:SUFly36V7h8=:Vbqq6FwnjjUoAgvV8E+dwd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X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3
X-CRM114-CacheID: sfid-20181111_152452_682340_CD00EDF2
X-CRM114-Status: GOOD ( 12.64 )
X-BeenThere: linux-arm-kernel@lists.infradead.org
X-Mailman-Version: 2.1.21
Precedence: list
List-Id: <linux-arm-kernel.lists.infradead.org>
List-Unsubscribe:
<http://lists.infradead.org/mailman/options/linux-arm-kernel>,
<mailto:linux-arm-kernel-request@lists.infradead.org?subject=unsubscribe>
List-Archive: <http://lists.infradead.org/pipermail/linux-arm-kernel/>
List-Post: <mailto:linux-arm-kernel@lists.infradead.org>
List-Help: <mailto:linux-arm-kernel-request@lists.infradead.org?subject=help>
List-Subscribe:
<http://lists.infradead.org/mailman/listinfo/linux-arm-kernel>,
<mailto:linux-arm-kernel-request@lists.infradead.org?subject=subscribe>
Cc: Stefan Wahren <stefan.wahren@i2se.com>,
Phil Elwell <phil@raspberrypi.org>,
linux-mmc@vger.kernel.org, linux-rpi-kernel@lists.infradead.org,
Michal Suchanek <msuchanek@suse.de>, linux-arm-kernel@lists.infradead.org
MIME-Version: 1.0
Content-Type: text/plain; charset="us-ascii"
Sender: "linux-arm-kernel" <linux-arm-kernel-bounces@lists.infradead.org>
Errors-To:
linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org
X-Virus-Scanned: ClamAV using ClamSMTP
There are two variables len within bcm2835_prepare_dma. So rename the result
of dma_map_sg to sg_len. While we are at this add a bail out to simplify the
following change.
Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
---
drivers/mmc/host/bcm2835.c | 16 +++++++---------
1 file changed, 7 insertions(+), 9 deletions(-)
diff --git a/drivers/mmc/host/bcm2835.c b/drivers/mmc/host/bcm2835.c
index 2c7589f..c42bdaa 100644
--- a/drivers/mmc/host/bcm2835.c
+++ b/drivers/mmc/host/bcm2835.c
@@ -464,7 +464,7 @@ static void bcm2835_transfer_pio(struct bcm2835_host *host)
static
void bcm2835_prepare_dma(struct bcm2835_host *host, struct mmc_data *data)
{
- int len, dir_data, dir_slave;
+ int sg_len, dir_data, dir_slave;
struct dma_async_tx_descriptor *desc = NULL;
struct dma_chan *dma_chan;
@@ -510,15 +510,13 @@ void bcm2835_prepare_dma(struct bcm2835_host *host, struct mmc_data *data)
&host->dma_cfg_rx :
&host->dma_cfg_tx);
- len = dma_map_sg(dma_chan->device->dev, data->sg, data->sg_len,
- dir_data);
+ sg_len = dma_map_sg(dma_chan->device->dev, data->sg, data->sg_len,
+ dir_data);
+ if (!sg_len)
+ return;
- if (len > 0) {
- desc = dmaengine_prep_slave_sg(dma_chan, data->sg,
- len, dir_slave,
- DMA_PREP_INTERRUPT |
- DMA_CTRL_ACK);
- }
+ desc = dmaengine_prep_slave_sg(dma_chan, data->sg, sg_len, dir_slave,
+ DMA_PREP_INTERRUPT | DMA_CTRL_ACK);
if (desc) {
desc->callback = bcm2835_dma_complete;
From patchwork Sun Nov 11 20:23:59 2018
Content-Type: text/plain; charset="utf-8"
MIME-Version: 1.0
Content-Transfer-Encoding: 7bit
X-Patchwork-Submitter: Stefan Wahren <stefan.wahren@i2se.com>
X-Patchwork-Id: 10677863
Return-Path:
<linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org>
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 3D4A8139B
for <patchwork-linux-arm@patchwork.kernel.org>;
Sun, 11 Nov 2018 20:27:08 +0000 (UTC)
Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1])
by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 2EABA296EB
for <patchwork-linux-arm@patchwork.kernel.org>;
Sun, 11 Nov 2018 20:27:08 +0000 (UTC)
Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486)
id 1FAB5296FF; Sun, 11 Nov 2018 20:27:08 +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=-3.6 required=2.0 tests=BAYES_00,DKIM_SIGNED,
DKIM_VALID,MAILING_LIST_MULTI,RCVD_IN_DNSWL_LOW autolearn=ham version=3.3.1
Received: from bombadil.infradead.org (bombadil.infradead.org
[198.137.202.133])
(using TLSv1.2 with cipher AES256-GCM-SHA384 (256/256 bits))
(No client certificate requested)
by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id C63FC296EB
for <patchwork-linux-arm@patchwork.kernel.org>;
Sun, 11 Nov 2018 20:27:07 +0000 (UTC)
DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed;
d=lists.infradead.org; s=bombadil.20170209; h=Sender:
Content-Transfer-Encoding:Content-Type:MIME-Version:Cc:List-Subscribe:
List-Help:List-Post:List-Archive:List-Unsubscribe:List-Id:References:
In-Reply-To:Message-Id:Date:Subject:To:From:Reply-To:Content-ID:
Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc
:Resent-Message-ID:List-Owner;
bh=w0gGu0RhdppnbHj+KC4eiYbqQi5jIFFj1vOCHvG7izk=; b=tSzVsJXA7bK2/gIIVp574/SFNR
BgvzhxZLA/OEkfPjbtzn6g7PhFHNYCY2tQT1NfP01NxDvDzgZB5TEcCqtrdjkJY0i0hpHS4Ex0SKr
oIYr7vZFZc3vcWcO/KC3Kmo+a6lT7nBNDddf/cXDJPS/+jOqm/QCf5ho2YvSATxAnxwgnSi60ZaUO
pr/6gai+PjYKpQFZOL6myQ0sWfTTlc1l2KdBGjXV/FLp6EVuwbVOO3xUNJ1ZRnY8Ku/4Hq7tVTYWO
oO45AJ1T+qe7lz9G/rfVbqXsnK8JZyhgubhZJXPRWAvoOGj1HIYGAwyOM4bKBfJn6LnKp6+bosthz
AN9aGK6g==;
Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org)
by bombadil.infradead.org with esmtp (Exim 4.90_1 #2 (Red Hat Linux))
id 1gLwK1-00061u-1u; Sun, 11 Nov 2018 20:27:05 +0000
Received: from merlin.infradead.org ([2001:8b0:10b:1231::1])
by bombadil.infradead.org with esmtps (Exim 4.90_1 #2 (Red Hat Linux))
id 1gLwHw-0002d9-OE; Sun, 11 Nov 2018 20:24:56 +0000
DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed;
d=infradead.org; s=merlin.20170209; h=References:In-Reply-To:Message-Id:Date:
Subject:Cc:To:From:Sender:Reply-To:MIME-Version:Content-Type:
Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date:
Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Id:
List-Help:List-Unsubscribe:List-Subscribe:List-Post:List-Owner:List-Archive;
bh=6Y3NNECHfTEnbE17TZ4lEpf9LD6uJsc6TH5WZfUfuzk=; b=HvhoptR8U2ubhwrWMzaTVnGQy
II2zx46KApZRWsxtYONLMA5cwNuCa0IlO7pyZ2xzkmkvg3l9zY9tw0FIFvHHLhMUBT2QfLdXX47QA
4IwFzcW0ZPkm1/jCaDHb+fjCb+4AHHBAae4C6MrN7+a6ykIfhqgPkEfTtZGdhAnxrTbMDTMhgqs3I
bSMEifAlxhV0ZMu8SNVAZNB1lgRsdsdgdcBY/t248mQgHc6o2D2ibCGnSYHMy8xjLjNIN2UHatXZf
O+ebwk3ljy5b6FcEOHgg0bOh3eTwjGlbh9jR06jAx95wa7gOJG7bJO2mLb1Q0TEg4O/jdMmSzmKZf
bnQ+8cx4A==;
Received: from mout.kundenserver.de ([212.227.126.135])
by merlin.infradead.org with esmtps (Exim 4.90_1 #2 (Red Hat Linux))
id 1gLwHt-0001eo-Ny; Sun, 11 Nov 2018 20:24:54 +0000
Received: from localhost.localdomain ([37.4.249.153]) by
mrelayeu.kundenserver.de (mreue012 [212.227.15.167]) with ESMTPSA (Nemesis)
id 1Mw9oq-1fWB8w1OlA-00s3Fm; Sun, 11 Nov 2018 21:24:34 +0100
From: Stefan Wahren <stefan.wahren@i2se.com>
To: Eric Anholt <eric@anholt.net>, Florian Fainelli <f.fainelli@gmail.com>,
Ulf Hansson <ulf.hansson@linaro.org>
Subject: [PATCH V2 7/7] mmc: bcm2835: Properly handle dmaengine_prep_slave_sg
Date: Sun, 11 Nov 2018 21:23:59 +0100
Message-Id: <1541967839-2847-8-git-send-email-stefan.wahren@i2se.com>
X-Mailer: git-send-email 2.7.4
In-Reply-To: <1541967839-2847-1-git-send-email-stefan.wahren@i2se.com>
References: <1541967839-2847-1-git-send-email-stefan.wahren@i2se.com>
X-Provags-ID: V03:K1:YHuOF9ODbnoju/fZ6GEvx8dgsERlCPgAFKTWXLdnneRYXz5Rrwv
HmNp+EMMG4LCQ6yrw9geiQ8UMaSlKRlOogmYpjlT6+acj6AvpUhfV/V/QTZoIqWymmOLu00
ilWzNp6sUh0G36dYFqNQx/xxoevvSshDkQfngYwW4IylOJ5Ijw4q7mUNQJel0aDdT6VxcCF
vNXPaH6x5aju6BnVQQTZw==
X-UI-Out-Filterresults: notjunk:1;V01:K0:F8RnfZXOXFg=:/o9BXYY1XlPda36fnQR3pw
exiC7Lebj6iLmcKcGV1N+gYxVKa++UCwnlYE52iQ3aEq2FFOYc9MIGfKSXztp6aQJLMEcJ+Nl
Y6IvfEO9Wre/kOJHLSbnLgi5rdaSTR4mjKUA8jP7+hgmHvgkSbKeQPPA9NbLPN9j2p/jPQt6j
wWducLkOGSbZ5YW28XqMqKiEgyxjt72W7Ulgwt1l9fzu67fxmhDdc3UWHpofqHuJQ3dTz7iyH
kgg+rS8NAKZBCtm6dFRPHs5TFa1D75bGQE9WbGv828i+/KNpsIoAbBRLLRmeGAoFn+KRil/PA
2NEyeFtr8QO/DsyVQUofQeZgtDmWXquT6il4a9R21nFM8UVN72Lt47MR7dQIKfjtCewO1XhKp
aCAhoeqoKuI++NlYUmTAzwHyR1AzSqbz3qFLL669z219gmvjFFlmzCiNNQuixrhw3CvbXxywa
F8FFVxEdPJRjt5v5xsfEQ9kWNm/UneKmSuw+sOIM6NjTYMbCxUA8s/SReuQtco4vZ5fMk2a0E
H6WbLHlCpPoxm6106p29jhQ1MkQBcRRc/Gnr283sXcshS2idax1s/BXgEYWoqn1IXoSipmSRS
uO7fLBnuonw9uYoUm30LeVzea9BSFsXSJQUAXYoj0FC51hOHYQG6yaC1EoGnL13niwbOV1w3V
t7MsLAFqvse4jRXAQ2daRMVsoFeXyREOFlyM2u0kJ7SlglZ7O0HJNvOHJsOTEJBUDsCQQskjd
UPyZ9p8NHWMKpnE18BgSypX/UwcNIarGvkM8pe6BN+IN6YbM+3leikxVVZ7pD64qCCITVHvjt
SkzE3mpbb2hZZ/3vD8VryvQAJ4A0Q==
X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3
X-CRM114-CacheID: sfid-20181111_152453_987059_DF242521
X-CRM114-Status: GOOD ( 10.37 )
X-BeenThere: linux-arm-kernel@lists.infradead.org
X-Mailman-Version: 2.1.21
Precedence: list
List-Id: <linux-arm-kernel.lists.infradead.org>
List-Unsubscribe:
<http://lists.infradead.org/mailman/options/linux-arm-kernel>,
<mailto:linux-arm-kernel-request@lists.infradead.org?subject=unsubscribe>
List-Archive: <http://lists.infradead.org/pipermail/linux-arm-kernel/>
List-Post: <mailto:linux-arm-kernel@lists.infradead.org>
List-Help: <mailto:linux-arm-kernel-request@lists.infradead.org?subject=help>
List-Subscribe:
<http://lists.infradead.org/mailman/listinfo/linux-arm-kernel>,
<mailto:linux-arm-kernel-request@lists.infradead.org?subject=subscribe>
Cc: Stefan Wahren <stefan.wahren@i2se.com>,
Phil Elwell <phil@raspberrypi.org>,
linux-mmc@vger.kernel.org, linux-rpi-kernel@lists.infradead.org,
Michal Suchanek <msuchanek@suse.de>, linux-arm-kernel@lists.infradead.org
MIME-Version: 1.0
Content-Type: text/plain; charset="us-ascii"
Sender: "linux-arm-kernel" <linux-arm-kernel-bounces@lists.infradead.org>
Errors-To:
linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org
X-Virus-Scanned: ClamAV using ClamSMTP
In case dmaengine_prep_slave_sg fails we need to call dma_unmap_sg.
Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
Acked-by: Eric Anholt <eric@anholt.net>
---
drivers/mmc/host/bcm2835.c | 15 +++++++++------
1 file changed, 9 insertions(+), 6 deletions(-)
diff --git a/drivers/mmc/host/bcm2835.c b/drivers/mmc/host/bcm2835.c
index c42bdaa..82e4b08 100644
--- a/drivers/mmc/host/bcm2835.c
+++ b/drivers/mmc/host/bcm2835.c
@@ -518,13 +518,16 @@ void bcm2835_prepare_dma(struct bcm2835_host *host, struct mmc_data *data)
desc = dmaengine_prep_slave_sg(dma_chan, data->sg, sg_len, dir_slave,
DMA_PREP_INTERRUPT | DMA_CTRL_ACK);
- if (desc) {
- desc->callback = bcm2835_dma_complete;
- desc->callback_param = host;
- host->dma_desc = desc;
- host->dma_chan = dma_chan;
- host->dma_dir = dir_data;
+ if (!desc) {
+ dma_unmap_sg(dma_chan->device->dev, data->sg, sg_len, dir_data);
+ return;
}
+
+ desc->callback = bcm2835_dma_complete;
+ desc->callback_param = host;
+ host->dma_desc = desc;
+ host->dma_chan = dma_chan;
+ host->dma_dir = dir_data;
}
static void bcm2835_start_dma(struct bcm2835_host *host)