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-rw-r--r--drivers/mmc/mmci.c7
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/mmc/mmci.c b/drivers/mmc/mmci.c
index 37ee7f8dc82f..9fef29d978b5 100644
--- a/drivers/mmc/mmci.c
+++ b/drivers/mmc/mmci.c
@@ -97,6 +97,13 @@ static void mmci_start_data(struct mmci_host *host, struct mmc_data *data)
if (data->flags & MMC_DATA_READ) {
datactrl |= MCI_DPSM_DIRECTION;
irqmask = MCI_RXFIFOHALFFULLMASK;
+
+ /*
+ * If we have less than a FIFOSIZE of bytes to transfer,
+ * trigger a PIO interrupt as soon as any data is available.
+ */
+ if (host->size < MCI_FIFOSIZE)
+ irqmask |= MCI_RXDATAAVLBLMASK;
} else {
/*
* We don't actually need to include "FIFO empty" here