spi: pic32: Set proper bits_per_word_mask

This driver only supports 8/16/32 bits_per_word, so set
master->bits_per_word_mask accordingly. With this change, we can remove
the spi->bits_per_word checking in pic32_spi_setup as it's done by spi
core.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

diff --git a/drivers/spi/spi-pic32.c b/drivers/spi/spi-pic32.c
index f8313ea..4eeb8a8 100644 (file)
--- a/drivers/spi/spi-pic32.c
+++ b/drivers/spi/spi-pic32.c
@@ -592,16 +592,6 @@ static int pic32_spi_setup(struct spi_device *spi)
                return -EINVAL;
        }
 
-       switch (spi->bits_per_word) {
-       case 8:
-       case 16:
-       case 32:
-               break;
-       default:
-               dev_err(&spi->dev, "Invalid bits_per_word defined\n");
-               return -EINVAL;
-       }
-
        /* PIC32 spi controller can drive /CS during transfer depending
         * on tx fifo fill-level. /CS will stay asserted as long as TX
         * fifo is non-empty, else will be deasserted indicating
@@ -791,7 +781,8 @@ static int pic32_spi_probe(struct platform_device *pdev)
        master->setup           = pic32_spi_setup;
        master->cleanup         = pic32_spi_cleanup;
        master->flags           = SPI_MASTER_MUST_TX | SPI_MASTER_MUST_RX;
-       master->bits_per_word_mask      = SPI_BPW_RANGE_MASK(8, 32);
+       master->bits_per_word_mask      = SPI_BPW_MASK(8) | SPI_BPW_MASK(16) |
+                                         SPI_BPW_MASK(32);
        master->transfer_one            = pic32_spi_one_transfer;
        master->prepare_message         = pic32_spi_prepare_message;
        master->unprepare_message       = pic32_spi_unprepare_message;