Input: ad7879 - fix spi word size to 16 bit

Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>

1 files changed, 8 insertions, 0 deletions

diff --git a/drivers/input/touchscreen/ad7879-spi.c b/drivers/input/touchscreen/ad7879-spi.c
index 9fa8e5de5ff9..59c6e68c4325 100644
--- a/drivers/input/touchscreen/ad7879-spi.c
+++ b/drivers/input/touchscreen/ad7879-spi.c
@@ -134,6 +134,7 @@ static const struct ad7879_bus_ops ad7879_spi_bus_ops = {
 static int __devinit ad7879_spi_probe(struct spi_device *spi)
 {
         struct ad7879 *ts;
+        int err;
 
         /* don't exceed max specified SPI CLK frequency */
         if (spi->max_speed_hz > MAX_SPI_FREQ_HZ) {
@@ -141,6 +142,13 @@ static int __devinit ad7879_spi_probe(struct spi_device *spi)
                 return -EINVAL;
         }
 
+        spi->bits_per_word = 16;
+        err = spi_setup(spi);
+        if (err) {
+                dev_dbg(&spi->dev, "spi master doesn't support 16 bits/word\n");
+                return err;
+        }
+
         ts = ad7879_probe(&spi->dev, AD7879_DEVID, spi->irq, &ad7879_spi_bus_ops);
         if (IS_ERR(ts))
                 return PTR_ERR(ts);