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Signed-off-by: Han Xu Signed-off-by: Clark Wang --- drivers/spi/spi-fsl-lpspi.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/spi/spi-fsl-lpspi.c b/drivers/spi/spi-fsl-lpspi.c index 4b70038ceb6b..80f7367095ab 100644 --- a/drivers/spi/spi-fsl-lpspi.c +++ b/drivers/spi/spi-fsl-lpspi.c @@ -303,6 +303,12 @@ static int fsl_lpspi_set_bitrate(struct fsl_lpspi_data *fsl_lpspi) perclk_rate = clk_get_rate(fsl_lpspi->clk_per); + if (!config.speed_hz) { + dev_err(fsl_lpspi->dev, + "error: the transmission speed provided is 0!\n"); + return -EINVAL; + } + if (config.speed_hz > perclk_rate / 2) { dev_err(fsl_lpspi->dev, "per-clk should be at least two times of transfer speed");