The STOP command can terminate a data transfer between a memory card and mmc controller.
As show in Synopsys DesignWare Cores Mobile Stroage Host Databook: Data timeout and Data end-bit error will terminate further data transfer by mmc controller. So we should not send abort command to terminate a data transfer again if we got DRTO and EBE interrupt. After this patch, all mmc_test cases can pass on RK3288-Pink2 board. Signed-off-by: Addy Ke <[email protected]> --- drivers/mmc/host/dw_mmc.c | 10 ++++++++-- 1 file changed, 8 insertions(+), 2 deletions(-) diff --git a/drivers/mmc/host/dw_mmc.c b/drivers/mmc/host/dw_mmc.c index 4d2e3c2..4bd7df1 100644 --- a/drivers/mmc/host/dw_mmc.c +++ b/drivers/mmc/host/dw_mmc.c @@ -1520,7 +1520,10 @@ static void dw_mci_tasklet_func(unsigned long priv) if (test_and_clear_bit(EVENT_DATA_ERROR, &host->pending_events)) { dw_mci_stop_dma(host); - send_stop_abort(host, data); + if (data->stop || + !(host->data_status & SDMMC_INT_DRTO) || + !(host->data_status & SDMMC_INT_EBE)) + send_stop_abort(host, data); state = STATE_DATA_ERROR; break; } @@ -1547,7 +1550,10 @@ static void dw_mci_tasklet_func(unsigned long priv) if (test_and_clear_bit(EVENT_DATA_ERROR, &host->pending_events)) { dw_mci_stop_dma(host); - send_stop_abort(host, data); + if (data->stop || + !(host->data_status & SDMMC_INT_DRTO) || + !(host->data_status & SDMMC_INT_EBE)) + send_stop_abort(host, data); state = STATE_DATA_ERROR; break; } -- 1.8.3.2 -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
