linux-kernel - [PATCH 01/14] mmc: mmci: fix qcom dma issue during mmci init with new dma

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Message-ID: <1533116221-380-2-git-send-email-ludovic.Barre@st.com>
Date:   Wed, 1 Aug 2018 11:36:48 +0200
From:   Ludovic Barre <ludovic.Barre@...com>
To:     Ulf Hansson <ulf.hansson@...aro.org>,
        Rob Herring <robh+dt@...nel.org>
CC:     Maxime Coquelin <mcoquelin.stm32@...il.com>,
        Alexandre Torgue <alexandre.torgue@...com>,
        Gerald Baeza <gerald.baeza@...com>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>, <devicetree@...r.kernel.org>,
        <linux-mmc@...r.kernel.org>, Ludovic Barre <ludovic.barre@...com>
Subject: [PATCH 01/14] mmc: mmci: fix qcom dma issue during mmci init with new dma_setup callback

From: Ludovic Barre <ludovic.barre@...com>

This patch fixes qcom dma issue during mmci init.
Like init callback of qcom variant is not set, the qcom dma
is not correctly initialized and fail while dma transfer
("buggy DMA detected. Taking evasive action").

Signed-off-by: Ludovic Barre <ludovic.barre@...com>
---
 drivers/mmc/host/mmci.c | 1 +
 drivers/mmc/host/mmci.h | 1 +
 2 files changed, 2 insertions(+)

diff --git a/drivers/mmc/host/mmci.c b/drivers/mmc/host/mmci.c
index 71e9336..1841d250 100644
--- a/drivers/mmc/host/mmci.c
+++ b/drivers/mmc/host/mmci.c
@@ -208,6 +208,7 @@ static struct variant_data variant_qcom = {
 	.mmcimask1		= true,
 	.start_err		= MCI_STARTBITERR,
 	.opendrain		= MCI_ROD,
+	.init			= qcom_variant_init,
 };
 
 /* Busy detection for the ST Micro variant */
diff --git a/drivers/mmc/host/mmci.h b/drivers/mmc/host/mmci.h
index 517591d..696a066 100644
--- a/drivers/mmc/host/mmci.h
+++ b/drivers/mmc/host/mmci.h
@@ -338,3 +338,4 @@ struct mmci_host {
 #endif
 };
 
+void qcom_variant_init(struct mmci_host *host);
-- 
2.7.4