diff options
Diffstat (limited to 'drivers/spi/spi.c')
| -rw-r--r-- | drivers/spi/spi.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/spi/spi.c b/drivers/spi/spi.c index 004b10f184d..163fd802b7a 100644 --- a/drivers/spi/spi.c +++ b/drivers/spi/spi.c @@ -1376,6 +1376,14 @@ static int __spi_async(struct spi_device *spi, struct spi_message *message) xfer->bits_per_word = spi->bits_per_word; if (!xfer->speed_hz) xfer->speed_hz = spi->max_speed_hz; + if (master->bits_per_word_mask) { + /* Only 32 bits fit in the mask */ + if (xfer->bits_per_word > 32) + return -EINVAL; + if (!(master->bits_per_word_mask & + BIT(xfer->bits_per_word - 1))) + return -EINVAL; + } } message->spi = spi; |