[PATCH 3/5] spi/mxs: Remove full duplex check, spi core already does it

[Trent Piepho <tpiepho-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>]

Because the driver sets the SPI_MASTER_HALF_DUPLEX flag, the spi core
will check transfers to insure they are not full duplex.  It's not
necessary to check that in the mxs driver as well.

Signed-off-by: Trent Piepho <tpiepho-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
Cc: Marek Vasut <marex-ynQEQJNshbs@public.gmane.org>
Cc: Fabio Estevam <fabio.estevam-KZfg59tc24xl57MIdRCFDg@public.gmane.org>
Cc: Shawn Guo <shawn.guo-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>
---
 drivers/spi/spi-mxs.c |    6 ------
 1 file changed, 6 deletions(-)

diff --git a/drivers/spi/spi-mxs.c b/drivers/spi/spi-mxs.c
index 5d63b21..7218006 100644
--- a/drivers/spi/spi-mxs.c
+++ b/drivers/spi/spi-mxs.c
@@ -408,12 +408,6 @@ static int mxs_spi_transfer_one(struct spi_master *master,
 		/* De-assert on last transfer, inverted by cs_change flag */
 		flag = (&t->transfer_list == m->transfers.prev) ^ t->cs_change ?
 		       TXRX_DEASSERT_CS : 0;
-		if ((t->rx_buf && t->tx_buf) || (t->rx_dma && t->tx_dma)) {
-			dev_err(ssp->dev,
-				"Cannot send and receive simultaneously\n");
-			status = -EINVAL;
-			break;
-		}
 
 		/*
 		 * Small blocks can be transfered via PIO.
-- 
1.7.10.4


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