diff options
Diffstat (limited to 'drivers/iio/adc/stm32-dfsdm-core.c')
| -rw-r--r-- | drivers/iio/adc/stm32-dfsdm-core.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/iio/adc/stm32-dfsdm-core.c b/drivers/iio/adc/stm32-dfsdm-core.c index e50efdcc41ff..1d0d8238d9b5 100644 --- a/drivers/iio/adc/stm32-dfsdm-core.c +++ b/drivers/iio/adc/stm32-dfsdm-core.c @@ -227,6 +227,11 @@ static int stm32_dfsdm_parse_of(struct platform_device *pdev, } priv->spi_clk_out_div = div_u64_rem(clk_freq, spi_freq, &rem) - 1; + if (!priv->spi_clk_out_div) { + /* spi_clk_out_div == 0 means ckout is OFF */ + dev_err(&pdev->dev, "spi-max-frequency not achievable\n"); + return -EINVAL; + } priv->dfsdm.spi_master_freq = spi_freq; if (rem) { |