linux-kernel - [PATCH v2 1/2] mmc: rtsx: add R1-no-CRC mmc command type handle

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Date:	Thu, 27 Mar 2014 13:35:04 +0800
From:	<micky_ching@...lsil.com.cn>
To:	<chris@...ntf.net>, <sameo@...ux.intel.com>
CC:	<gregkh@...uxfoundation.org>, <dan.carpenter@...cle.com>,
	<ulf.hansson@...aro.org>, <devel@...uxdriverproject.org>,
	<linux-kernel@...r.kernel.org>, <linux-mmc@...r.kernel.org>,
	<rogerable@...ltek.com>, <wei_wang@...lsil.com.cn>,
	Micky Ching <micky_ching@...lsil.com.cn>
Subject: [PATCH v2 1/2] mmc: rtsx: add R1-no-CRC mmc command type handle

From: Micky Ching <micky_ching@...lsil.com.cn>

commit a27fbf2f067b0cd6f172c8b696b9a44c58bfaa7a
<mmc: add ignorance case for CMD13 CRC error>
produced a cmd.flags unhandled in realtek pci host driver.
This will make MMC card failed initialize, this patch is
used to handle the new cmd.flags condition and MMC card can be used.

Signed-off-by: Micky Ching <micky_ching@...lsil.com.cn>
---
 drivers/mmc/host/rtsx_pci_sdmmc.c |    3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/mmc/host/rtsx_pci_sdmmc.c b/drivers/mmc/host/rtsx_pci_sdmmc.c
index 5fb994f..0d8904a 100644
--- a/drivers/mmc/host/rtsx_pci_sdmmc.c
+++ b/drivers/mmc/host/rtsx_pci_sdmmc.c
@@ -346,6 +346,9 @@ static void sd_send_cmd(struct realtek_pci_sdmmc *host, struct mmc_command *cmd)
 	case MMC_RSP_R1:
 		rsp_type = SD_RSP_TYPE_R1;
 		break;
+	case MMC_RSP_R1 & ~MMC_RSP_CRC:
+		rsp_type = SD_RSP_TYPE_R1 | SD_NO_CHECK_CRC7;
+		break;
 	case MMC_RSP_R1B:
 		rsp_type = SD_RSP_TYPE_R1b;
 		break;
-- 
1.7.9.5

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