commit ba47644d5b79914fe53b69c639902afce8ccfe7f
author Axel Lin <axel.lin@ingics.com> Sun Mar 02 22:25:10 2014 +0800
committer Mark Brown <broonie@linaro.org> Tue Mar 04 11:08:05 2014 +0800
tree cca45521dca99665ed433e54b0927a7eb6c77791
parent b5f6517948cce50bde9aa441b4f00b63518f6421

spi: sun4i: Set bits_per_word_mask to only support 8 bits word length

This controller only supports 8 bits word length.
Set bits_per_word_mask so spi core will reject transfers that attempt to use
an unsupported bits_per_word value.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Mark Brown <broonie@linaro.org>

drivers/spi/spi-sun4i.c

diff --git a/drivers/spi/spi-sun4i.c b/drivers/spi/spi-sun4i.c
index 3f82705..d266a870 100644
--- a/drivers/spi/spi-sun4i.c
+++ b/drivers/spi/spi-sun4i.c
@@ -392,6 +392,7 @@
 	master->transfer_one = sun4i_spi_transfer_one;
 	master->num_chipselect = 4;
 	master->mode_bits = SPI_CPOL | SPI_CPHA | SPI_CS_HIGH | SPI_LSB_FIRST;
+	master->bits_per_word_mask = SPI_BPW_MASK(8);
 	master->dev.of_node = pdev->dev.of_node;
 	master->auto_runtime_pm = true;