spi: sh-hspi: 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>

diff --git a/drivers/spi/spi-sh-hspi.c b/drivers/spi/spi-sh-hspi.c
index 82d2f92..dbd2c44 100644 (file)
--- a/drivers/spi/spi-sh-hspi.c
+++ b/drivers/spi/spi-sh-hspi.c
@@ -230,21 +230,6 @@ static int hspi_transfer_one_message(struct spi_master *master,
        return ret;
 }
 
-static int hspi_setup(struct spi_device *spi)
-{
-       struct hspi_priv *hspi = spi_master_get_devdata(spi->master);
-       struct device *dev = hspi->dev;
-
-       if (8 != spi->bits_per_word) {
-               dev_err(dev, "bits_per_word should be 8\n");
-               return -EIO;
-       }
-
-       dev_dbg(dev, "%s setup\n", spi->modalias);
-
-       return 0;
-}
-
 static void hspi_cleanup(struct spi_device *spi)
 {
        struct hspi_priv *hspi = spi_master_get_devdata(spi->master);
@@ -300,12 +285,13 @@ static int hspi_probe(struct platform_device *pdev)
 
        master->num_chipselect  = 1;
        master->bus_num         = pdev->id;
-       master->setup           = hspi_setup;
        master->cleanup         = hspi_cleanup;
        master->mode_bits       = SPI_CPOL | SPI_CPHA;
        master->dev.of_node     = pdev->dev.of_node;
        master->auto_runtime_pm = true;
        master->transfer_one_message            = hspi_transfer_one_message;
+       master->bits_per_word_mask = SPI_BPW_MASK(8);
+
        ret = devm_spi_register_master(&pdev->dev, master);
        if (ret < 0) {
                dev_err(&pdev->dev, "spi_register_master error.\n");