From: Micky Ching <micky_ching@realsil.com.cn>
Date: Thu, 27 Mar 2014 05:35:04 +0000 (+0800)
Subject: mmc: rtsx: add R1-no-CRC mmc command type handle
X-Git-Tag: firefly_0821_release~3679^2~1859
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=8ccd5dffd862ca405abde6e9653fa8f002448536;p=firefly-linux-kernel-4.4.55.git

mmc: rtsx: add R1-no-CRC mmc command type handle

commit 5027251eced6e34315a52bd841279df957f627bb upstream.

a27fbf2f067b0cd ("mmc: add ignorance case for CMD13 CRC error") produced
a cmd.flags unhandled in realtek pci host driver.  This will make MMC
card fail to 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@realsil.com.cn>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Chris Ball <chris@printf.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/drivers/mmc/host/rtsx_pci_sdmmc.c b/drivers/mmc/host/rtsx_pci_sdmmc.c
index ad13f4240c49..7ffb5cba30a9 100644
--- a/drivers/mmc/host/rtsx_pci_sdmmc.c
+++ b/drivers/mmc/host/rtsx_pci_sdmmc.c
@@ -247,6 +247,9 @@ static void sd_send_cmd_get_rsp(struct realtek_pci_sdmmc *host,
 	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;