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, 3 deletions

diff --git a/drivers/spi/spi-ath79.c b/drivers/spi/spi-ath79.c
index e504b7636058..5e2d52ce387f 100644
--- a/drivers/spi/spi-ath79.c
+++ b/drivers/spi/spi-ath79.c
@@ -155,9 +155,6 @@ static int ath79_spi_setup(struct spi_device *spi)
 {
         int status = 0;
 
-        if (spi->bits_per_word > 32)
-                return -EINVAL;
-
         if (!spi->controller_state) {
                 status = ath79_spi_setup_cs(spi);
                 if (status)
@@ -226,6 +223,7 @@ static int ath79_spi_probe(struct platform_device *pdev)
 
         pdata = pdev->dev.platform_data;
 
+        master->bits_per_word_mask = SPI_BPW_RANGE_MASK(1, 32);
         master->setup = ath79_spi_setup;
         master->cleanup = ath79_spi_cleanup;
         if (pdata) {