We should wait for data busy here in non-volt-switch state. This may happend when sdio sends CMD53. Signed-off-by: Addy Ke <addy.ke@xxxxxxxxxxxxxx> --- drivers/mmc/host/dw_mmc.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/drivers/mmc/host/dw_mmc.c b/drivers/mmc/host/dw_mmc.c index b0b57e3..b40080d 100644 --- a/drivers/mmc/host/dw_mmc.c +++ b/drivers/mmc/host/dw_mmc.c @@ -1007,6 +1007,13 @@ static void __dw_mci_start_request(struct dw_mci *host, mci_writel(host, BLKSIZ, data->blksz); } + /* + * We should wait for data busy here in non-volt-switch state. + * This may happend when sdio sends CMD53. + */ + if (host->state != STATE_WAITING_CMD11_DONE) + dw_mci_wait_busy(slot); + cmdflags = dw_mci_prepare_command(slot->mmc, cmd); /* this is the first command, send the initialization clock */ -- 1.8.3.2 -- To unsubscribe from this list: send the line "unsubscribe linux-doc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
