From: Teppei Kamijou <teppei.kamijou.yb@renesas.com>
Date: Wed, 12 Dec 2012 14:38:05 +0000 (+0100)
Subject: mmc: sh_mmcif: force to fail CMD52 immediately
X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=cd0511503532320e68396c90617d5f91ed7cae1c;p=openwrt%2Fstaging%2Fblogic.git

mmc: sh_mmcif: force to fail CMD52 immediately

mmc_rescan() sends CMD52 (SD_IO_RW_DIRECT) to reset SDIO card during
card detection. CMD52 should be ignored by SD/eMMC cards, but we can
also abort it in the driver immediately, since MMCIF doesn't support
SDIO cards anyway.

Signed-off-by: Teppei Kamijou <teppei.kamijou.yb@renesas.com>
Signed-off-by: Shinya Kuribayashi <shinya.kuribayashi.px@renesas.com>
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Chris Ball <cjb@laptop.org>
---

diff --git a/drivers/mmc/host/sh_mmcif.c b/drivers/mmc/host/sh_mmcif.c
index 741aeb95c7a4..8b4e98e2b130 100644
--- a/drivers/mmc/host/sh_mmcif.c
+++ b/drivers/mmc/host/sh_mmcif.c
@@ -911,6 +911,7 @@ static void sh_mmcif_request(struct mmc_host *mmc, struct mmc_request *mrq)
 		if ((mrq->cmd->flags & MMC_CMD_MASK) != MMC_CMD_BCR)
 			break;
 	case MMC_APP_CMD:
+	case SD_IO_RW_DIRECT:
 		host->state = STATE_IDLE;
 		mrq->cmd->error = -ETIMEDOUT;
 		mmc_request_done(mmc, mrq);