spi: s3c24xx: Convert to let spi core validate bits_per_word

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>
Signed-off-by: Mark Brown <broonie@linaro.org>

1 files changed, 1 insertions, 10 deletions

diff --git a/drivers/spi/spi-s3c24xx.c b/drivers/spi/spi-s3c24xx.c
index 746424aa5353..f1ffbfa6acef 100644
--- a/drivers/spi/spi-s3c24xx.c
+++ b/drivers/spi/spi-s3c24xx.c
@@ -123,25 +123,15 @@ static int s3c24xx_spi_update_state(struct spi_device *spi,
 {
         struct s3c24xx_spi *hw = to_hw(spi);
         struct s3c24xx_spi_devstate *cs = spi->controller_state;
-        unsigned int bpw;
         unsigned int hz;
         unsigned int div;
         unsigned long clk;
 
-        bpw = t ? t->bits_per_word : spi->bits_per_word;
         hz  = t ? t->speed_hz : spi->max_speed_hz;
 
-        if (!bpw)
-                bpw = 8;
-
         if (!hz)
                 hz = spi->max_speed_hz;
 
-        if (bpw != 8) {
-                dev_err(&spi->dev, "invalid bits-per-word (%d)\n", bpw);
-                return -EINVAL;
-        }
-
         if (spi->mode != cs->mode) {
                 u8 spcon = SPCON_DEFAULT | S3C2410_SPCON_ENSCK;
 
@@ -544,6 +534,7 @@ static int s3c24xx_spi_probe(struct platform_device *pdev)
 
         master->num_chipselect = hw->pdata->num_cs;
         master->bus_num = pdata->bus_num;
+        master->bits_per_word_mask = SPI_BPW_MASK(8);
 
         /* setup the state for the bitbang driver */