From: Ulf Hansson <ulf.hansson@linaro.org>
Date: Tue, 14 Jan 2014 20:24:21 +0000 (+0100)
Subject: mmc: block: Use R1 responses for stop cmds for read requests
X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=bcc3e1726d827c2d6f62f0e0e7bbc99eed7ad925;p=openwrt%2Fstaging%2Fblogic.git

mmc: block: Use R1 responses for stop cmds for read requests

While using open ended transmission and thus ending the transfer by
sending a stop command, we shall use R1B only for writes and R1 shall
be used for reads. Previously R1B were used in both cases.

Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Chris Ball <chris@printf.net>
---

diff --git a/drivers/mmc/card/block.c b/drivers/mmc/card/block.c
index c2187d5e9070..156cabfa61c3 100644
--- a/drivers/mmc/card/block.c
+++ b/drivers/mmc/card/block.c
@@ -1334,7 +1334,6 @@ static void mmc_blk_rw_rq_prep(struct mmc_queue_req *mqrq,
 	brq->data.blksz = 512;
 	brq->stop.opcode = MMC_STOP_TRANSMISSION;
 	brq->stop.arg = 0;
-	brq->stop.flags = MMC_RSP_SPI_R1B | MMC_RSP_R1B | MMC_CMD_AC;
 	brq->data.blocks = blk_rq_sectors(req);
 
 	/*
@@ -1377,9 +1376,15 @@ static void mmc_blk_rw_rq_prep(struct mmc_queue_req *mqrq,
 	if (rq_data_dir(req) == READ) {
 		brq->cmd.opcode = readcmd;
 		brq->data.flags |= MMC_DATA_READ;
+		if (brq->mrq.stop)
+			brq->stop.flags = MMC_RSP_SPI_R1 | MMC_RSP_R1 |
+					MMC_CMD_AC;
 	} else {
 		brq->cmd.opcode = writecmd;
 		brq->data.flags |= MMC_DATA_WRITE;
+		if (brq->mrq.stop)
+			brq->stop.flags = MMC_RSP_SPI_R1B | MMC_RSP_R1B |
+					MMC_CMD_AC;
 	}
 
 	if (do_rel_wr)