spi/omap2_mcspi: disable and enable chan between each SPI transfer

Commit Message

Jason Wang July 13, 2010, 1:26 p.m. UTC

None

Patch

diff --git a/drivers/spi/omap2_mcspi.c b/drivers/spi/omap2_mcspi.c
index b3a94ca..43fab41 100644
--- a/drivers/spi/omap2_mcspi.c
+++ b/drivers/spi/omap2_mcspi.c
@@ -644,6 +644,12 @@  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: