spi: convert drivers to use bits_per_word_mask

Fill in the recently added spi_master.bits_per_word_mask field in as
many drivers as possible. Make related cleanups, such as removing any
redundant error-checking, or empty setup callbacks.

Signed-off-by: Stephen Warren <swarren@wwwdotorg.org>
Acked-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

1 files changed, 2 insertions, 8 deletions

diff --git a/drivers/spi/spi-bfin-sport.c b/drivers/spi/spi-bfin-sport.c
index 39b0d1711b4e..e4a858ad6ef6 100644
--- a/drivers/spi/spi-bfin-sport.c
+++ b/drivers/spi/spi-bfin-sport.c
@@ -417,7 +417,7 @@ bfin_sport_spi_pump_transfers(unsigned long data)
 
         /* Bits per word setup */
         bits_per_word = transfer->bits_per_word;
-        if (bits_per_word % 16 == 0)
+        if (bits_per_word == 16)
                 drv_data->ops = &bfin_sport_transfer_ops_u16;
         else
                 drv_data->ops = &bfin_sport_transfer_ops_u8;
@@ -600,13 +600,6 @@ bfin_sport_spi_setup(struct spi_device *spi)
                 }
         }
 
-        if (spi->bits_per_word % 8) {
-                dev_err(&spi->dev, "%d bits_per_word is not supported\n",
-                                spi->bits_per_word);
-                ret = -EINVAL;
-                goto error;
-        }
-
         /* translate common spi framework into our register
          * following configure contents are same for tx and rx.
          */
@@ -778,6 +771,7 @@ static int bfin_sport_spi_probe(struct platform_device *pdev)
         drv_data->pin_req = platform_info->pin_req;
 
         master->mode_bits = SPI_CPOL | SPI_CPHA | SPI_LSB_FIRST;
+        master->bits_per_word_mask = SPI_BPW_MASK(8) | SPI_BPW_MASK(16);
         master->bus_num = pdev->id;
         master->num_chipselect = platform_info->num_chipselect;
         master->cleanup = bfin_sport_spi_cleanup;