Avoid config.speed_hz is 0 when it is a divisor.
Signed-off-by: Han Xu <[email protected]>
Signed-off-by: Clark Wang <[email protected]>
---
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");
--
2.34.1
On Fri, 05 May 2023 14:41:59 +0800, Clark Wang wrote:
> Avoid config.speed_hz is 0 when it is a divisor.
>
>
Applied to
https://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi.git for-next
Thanks!
[1/1] spi: lpspi: run transfer speed_hz sanity check
commit: f571d9132e0657b4aae40a8ffe758224d1f41047
All being well this means that it will be integrated into the linux-next
tree (usually sometime in the next 24 hours) and sent to Linus during
the next merge window (or sooner if it is a bug fix), however if
problems are discovered then the patch may be dropped or reverted.
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Thanks,
Mark