linux-kernel - [PATCH] Subject: MMC: Enable DMA on Ricoh sdhci reader by default

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Date:	Fri, 26 Feb 2010 23:25:11 +0200
From:	Maxim Levitsky <maximlevitsky@...il.com>
To:	linux-mmc@...r.kernel.org
Cc:	Vasily Khoruzhick <anarsoul@...il.com>,
	linux-kernel@...r.kernel.org
Subject: [PATCH] Subject: MMC: Enable DMA on Ricoh sdhci reader by default

From: Vasily Khoruzhick <anarsoul@...il.com>

This card reader doesn't advertise, however DMA works well.
Probably windows SDHCI driver assumes that all readers support DMA
and thus we see that bug.

Signed-off-by: Vasily Khoruzhick <anarsoul@...il.com>
Tested-by: Maxim Levitsky <maximlevitsky@...il.com>
---
 drivers/mmc/host/sdhci-pci.c |    7 +++----
 1 files changed, 3 insertions(+), 4 deletions(-)

diff --git a/drivers/mmc/host/sdhci-pci.c b/drivers/mmc/host/sdhci-pci.c
index 5c3a176..12f5b09 100644
--- a/drivers/mmc/host/sdhci-pci.c
+++ b/drivers/mmc/host/sdhci-pci.c
@@ -80,9 +80,6 @@ struct sdhci_pci_chip {
 
 static int ricoh_probe(struct sdhci_pci_chip *chip)
 {
-	if (chip->pdev->subsystem_vendor == PCI_VENDOR_ID_IBM)
-		chip->quirks |= SDHCI_QUIRK_CLOCK_BEFORE_RESET;
-
 	if (chip->pdev->subsystem_vendor == PCI_VENDOR_ID_SAMSUNG ||
 	    chip->pdev->subsystem_vendor == PCI_VENDOR_ID_SONY)
 		chip->quirks |= SDHCI_QUIRK_NO_CARD_NO_RESET;
@@ -92,7 +89,9 @@ static int ricoh_probe(struct sdhci_pci_chip *chip)
 
 static const struct sdhci_pci_fixes sdhci_ricoh = {
 	.probe		= ricoh_probe,
-	.quirks		= SDHCI_QUIRK_32BIT_DMA_ADDR,
+	.quirks		= SDHCI_QUIRK_32BIT_DMA_ADDR |
+			  SDHCI_QUIRK_FORCE_DMA |
+			  SDHCI_QUIRK_CLOCK_BEFORE_RESET,
 };
 
 static const struct sdhci_pci_fixes sdhci_ene_712 = {
-- 
1.6.3.3

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