[PATCH] mmc: block: Dont report successful writes with errors

[Christian Loehle <CLoehle@hyperstone.com>]

Be as conservative about successful write reporting to the
block layer for SPI as with normal SD and MMC.
That means on any errors bytes_xfered is ignored and the
whole write must be repeated.

Signed-off-by: Christian Loehle <cloehle@hyperstone.com>
---
 drivers/mmc/core/block.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/drivers/mmc/core/block.c b/drivers/mmc/core/block.c
index f4a1281658db..63d1c05582a9 100644
--- a/drivers/mmc/core/block.c
+++ b/drivers/mmc/core/block.c
@@ -1765,8 +1765,12 @@ static bool mmc_blk_status_error(struct request *req, u32 status)
 	struct mmc_queue *mq = req->q->queuedata;
 	u32 stop_err_bits;
 
+	/*
+	 * Either write timed out during busy and data->error is set
+	 * or we actually received a valid R2 and check for error bits.
+	 */
 	if (mmc_host_is_spi(mq->card->host))
-		return false;
+		return brq->data.error || !!status;
 
 	stop_err_bits = mmc_blk_stop_err_bits(brq);
 
-- 
2.36.1

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