Originally, when the host is in dma mode, the return status of dwmci_data_transfer() gets overlapped by the latter DWMCI_IDINTEN query. When the data transfer fails and the query succeeds, the failure gets escaped. Add quick return when data transfer fails.
Signed-off-by: linjunbao meljbao@gmail.com ---
drivers/mmc/dw_mmc.c | 4 ++++ 1 file changed, 4 insertions(+)
diff --git a/drivers/mmc/dw_mmc.c b/drivers/mmc/dw_mmc.c index e103664145..e04872c432 100644 --- a/drivers/mmc/dw_mmc.c +++ b/drivers/mmc/dw_mmc.c @@ -372,6 +372,10 @@ static int dwmci_send_cmd(struct mmc *mmc, struct mmc_cmd *cmd,
if (data) { ret = dwmci_data_transfer(host, data); + if (ret) { + debug("DWMCI data transfer fail.\n"); + return ret; + }
/* only dma mode need it */ if (!host->fifo_mode) {