linux-kernel - [PATCH 2/4] mmc: sdhci: do not set AUTO

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Date:	Mon, 9 Feb 2015 16:06:29 -0800
From:	Scott Branden <sbranden@...adcom.com>
To:	<bcm-kernel-feedback-list@...adcom.com>,
	Ulf Hansson <ulf.hansson@...aro.org>,
	Chris Ball <chris@...ntf.net>,
	Rob Herring <robh+dt@...nel.org>,
	Pawel Moll <pawel.moll@....com>,
	Mark Rutland <mark.rutland@....com>,
	Ian Campbell <ijc+devicetree@...lion.org.uk>,
	"Kumar Gala" <galak@...eaurora.org>,
	Grant Likely <grant.likely@...aro.org>
CC:	Ray Jui <rjui@...adcom.com>,
	Jonathan Richardson <jonathar@...adcom.com>,
	Corneliu Doban <cdoban@...adcom.com>,
	Dmitry Torokhov <dtor@...gle.com>,
	Anatol Pomazao <anatol@...gle.com>,
	<linux-mmc@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
	<devicetree@...r.kernel.org>,
	<linux-arm-kernel@...ts.infradead.org>,
	Scott Branden <sbranden@...adcom.com>
Subject: [PATCH 2/4] mmc: sdhci: do not set AUTO_CMD12 for multi-block CMD53

From: Corneliu Doban <cdoban@...adcom.com>

For CMD53 in block mode, the host does not need to stop the transfer,
as it stops when the block count (present in CMD53) is reached.

Signed-off-by: Corneliu Doban <cdoban@...adcom.com>
Signed-off-by: Scott Branden <sbranden@...adcom.com>
---
 drivers/mmc/host/sdhci.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c
index fcf78ab..f35d413 100644
--- a/drivers/mmc/host/sdhci.c
+++ b/drivers/mmc/host/sdhci.c
@@ -28,6 +28,7 @@
 #include <linux/mmc/mmc.h>
 #include <linux/mmc/host.h>
 #include <linux/mmc/card.h>
+#include <linux/mmc/sdio.h>
 #include <linux/mmc/slot-gpio.h>
 
 #include "sdhci.h"
@@ -934,7 +935,8 @@ static void sdhci_set_transfer_mode(struct sdhci_host *host,
 		 * If we are sending CMD23, CMD12 never gets sent
 		 * on successful completion (so no Auto-CMD12).
 		 */
-		if (!host->mrq->sbc && (host->flags & SDHCI_AUTO_CMD12))
+		if (!host->mrq->sbc && (host->flags & SDHCI_AUTO_CMD12) &&
+		    (cmd->opcode != SD_IO_RW_EXTENDED))
 			mode |= SDHCI_TRNS_AUTO_CMD12;
 		else if (host->mrq->sbc && (host->flags & SDHCI_AUTO_CMD23)) {
 			mode |= SDHCI_TRNS_AUTO_CMD23;
-- 
2.2.2

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