With no word size given in the users platform data, a generic spi host controller driver will assume a default word size of eight bit. This causes transmission to be performed bytewise, which will fail on little endian machines for sure. Failure on big endian depends on usage of slave select to mark word boundaries. Anyway, ad7877 is specified to work with 16 bit per word, so unconditionally set the word size accordingly. Signed-off-by: Oskar Schirmer <os@xxxxxxxxx> Signed-off-by: Daniel Glöckner <dg@xxxxxxxxx> Signed-off-by: Oliver Schneidewind <osw@xxxxxxxxx> --- drivers/input/touchscreen/ad7877.c | 2 ++ 1 files changed, 2 insertions(+), 0 deletions(-) diff --git a/drivers/input/touchscreen/ad7877.c b/drivers/input/touchscreen/ad7877.c index e019d53..92acd85 100644 --- a/drivers/input/touchscreen/ad7877.c +++ b/drivers/input/touchscreen/ad7877.c @@ -669,6 +669,8 @@ static int __devinit ad7877_probe(struct spi_device *spi) dev_dbg(&spi->dev, "SPI CLK %d Hz?\n",spi->max_speed_hz); return -EINVAL; } + spi->bits_per_word = 16; + spi_setup(spi); ts = kzalloc(sizeof(struct ad7877), GFP_KERNEL); input_dev = input_allocate_device(); -- 1.5.3.7 -- To unsubscribe from this list: send the line "unsubscribe linux-input" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
