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, 1 insertions, 8 deletions

diff --git a/drivers/spi/spi-atmel.c b/drivers/spi/spi-atmel.c
index 380387a47b1d..31cfc8711547 100644
--- a/drivers/spi/spi-atmel.c
+++ b/drivers/spi/spi-atmel.c
@@ -1268,13 +1268,6 @@ static int atmel_spi_setup(struct spi_device *spi)
                 return -EINVAL;
         }
 
-        if (bits < 8 || bits > 16) {
-                dev_dbg(&spi->dev,
-                                "setup: invalid bits_per_word %u (8 to 16)\n",
-                                bits);
-                return -EINVAL;
-        }
-
         /* see notes above re chipselect */
         if (!atmel_spi_is_v2(as)
                         && spi->chip_select == 0
@@ -1515,7 +1508,7 @@ static int atmel_spi_probe(struct platform_device *pdev)
 
         /* the spi->mode bits understood by this driver: */
         master->mode_bits = SPI_CPOL | SPI_CPHA | SPI_CS_HIGH;
-
+        master->bits_per_word_mask = SPI_BPW_RANGE_MASK(8, 16);
         master->dev.of_node = pdev->dev.of_node;
         master->bus_num = pdev->id;
         master->num_chipselect = master->dev.of_node ? 0 : 4;