spi/omap2_mcspi: disable channel after TX_ONLY transfer in PIO mode

[pandora-kernel.git] / drivers / spi / omap2_mcspi.c

diff --git a/drivers/spi/omap2_mcspi.c b/drivers/spi/omap2_mcspi.c
index d703927..27a3fa1 100644 (file)
--- a/drivers/spi/omap2_mcspi.c
+++ b/drivers/spi/omap2_mcspi.c
@@ -626,6 +626,12 @@ omap2_mcspi_txrx_pio(struct spi_device *spi, struct spi_transfer *xfer)
                } else if (mcspi_wait_for_reg_bit(chstat_reg,
                                OMAP2_MCSPI_CHSTAT_EOT) < 0)
                        dev_err(&spi->dev, "EOT timed out\n");
+
+               /* disable chan to purge rx datas received in TX_ONLY transfer,
+                * otherwise these rx datas will affect the direct following
+                * RX_ONLY transfer.
+                */
+               omap2_mcspi_set_enable(spi, 0);
        }
 out:
        omap2_mcspi_set_enable(spi, 1);