[PATCH V2 1/2] mmc: mmci: send stop command if sbc error issue

From: Ludovic Barre
Date: Wed Nov 07 2018 - 04:31:10 EST


From: Ludovic Barre <ludovic.barre@xxxxxx>

Refer to "4.15 set block count command" of sd specification:
Host needs to issue CMD12 if any error is detected in
the CMD18 and CMD25 operations.

In sbc case, the data->stop is fill by framework.

Signed-off-by: Ludovic Barre <ludovic.barre@xxxxxx>
---
drivers/mmc/host/mmci.c | 5 ++---
1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/drivers/mmc/host/mmci.c b/drivers/mmc/host/mmci.c
index 82bab35..13fa640 100644
--- a/drivers/mmc/host/mmci.c
+++ b/drivers/mmc/host/mmci.c
@@ -1190,11 +1190,10 @@ mmci_data_irq(struct mmci_host *host, struct mmc_data *data,
/* The error clause is handled above, success! */
data->bytes_xfered = data->blksz * data->blocks;

- if (!data->stop || host->mrq->sbc) {
+ if (!data->stop || (host->mrq->sbc && !data->error))
mmci_request_end(host, data->mrq);
- } else {
+ else
mmci_start_command(host, data->stop, 0);
- }
}
}

--
2.7.4