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| author | Axel Lin <axel.lin@ingics.com> | 2014-02-13 12:05:38 +0100 |
|---|---|---|
| committer | Mark Brown <broonie@linaro.org> | 2014-02-23 05:14:39 +0100 |
| commit | f734394d861fe71eafa28d6c28199d9847c5a319 (patch) | |
| tree | a9eb43efa726f4d5ceb4e36ada69b9fe0d2a78e2 /drivers/spi/spi-fsl-spi.c | |
| parent | spi: fsl: Fix problem with multi message transfers (diff) | |
| download | linux-f734394d861fe71eafa28d6c28199d9847c5a319.tar.xz linux-f734394d861fe71eafa28d6c28199d9847c5a319.zip | |
spi: fsl-spi: Convert to let spi core validate xfer->bits_per_word
Set bits_per_word_mask so spi core will reject transfers that attempt to use
an unsupported bits_per_word value.
fsl_spi_grlib_probe() may update mpc8xxx_spi->max_bits_per_word setting.
So set master->bits_per_word_mask after fsl_spi_grlib_probe().
Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
Diffstat (limited to 'drivers/spi/spi-fsl-spi.c')
| -rw-r--r-- | drivers/spi/spi-fsl-spi.c | 10 |
1 files changed, 4 insertions, 6 deletions
diff --git a/drivers/spi/spi-fsl-spi.c b/drivers/spi/spi-fsl-spi.c index 4dcb2929c01f..f35488ed62a9 100644 --- a/drivers/spi/spi-fsl-spi.c +++ b/drivers/spi/spi-fsl-spi.c @@ -239,12 +239,6 @@ static int fsl_spi_setup_transfer(struct spi_device *spi, if (!bits_per_word) bits_per_word = spi->bits_per_word; - /* Make sure its a bit width we support [4..16, 32] */ - if ((bits_per_word < 4) - || ((bits_per_word > 16) && (bits_per_word != 32)) - || (bits_per_word > mpc8xxx_spi->max_bits_per_word)) - return -EINVAL; - if (!hz) hz = spi->max_speed_hz; @@ -651,6 +645,10 @@ static struct spi_master * fsl_spi_probe(struct device *dev, if (mpc8xxx_spi->type == TYPE_GRLIB) fsl_spi_grlib_probe(dev); + master->bits_per_word_mask = + (SPI_BPW_RANGE_MASK(4, 16) | SPI_BPW_MASK(32)) & + SPI_BPW_RANGE_MASK(1, mpc8xxx_spi->max_bits_per_word); + if (mpc8xxx_spi->flags & SPI_QE_CPU_MODE) mpc8xxx_spi->set_shifts = fsl_spi_qe_cpu_set_shifts; |