Minki/linux
1
0
Fork 1
mirror of https://github.com/torvalds/linux.git synced 2025-01-01 15:51:46 +00:00
Code Issues Packages Projects Releases Wiki Activity

spi: axi-spi-engine: check for valid clock rate

Browse Source 
This adds a check for a valid SCLK rate in the axi-spi-engine driver
during probe. A valid rate is required to get accurate timing for delays
and by not allowing 0 we can avoid divide by zero errors later without
additional checks.

Signed-off-by: David Lechner <dlechner@baylibre.com>
Link: https://lore.kernel.org/r/20231117-axi-spi-engine-series-1-v1-8-cc59db999b87@baylibre.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
David Lechner 2023-11-17 14:12:59 -06:00 committed by Mark Brown
parent e16e71e3f3
commit e6d5eb85e8
No known key found for this signature in database
GPG Key ID: 24D68B725D5487D0
1 changed files with 3 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
drivers/spi/spi-axi-spi-engine.c
View File

@ -532,6 +532,9 @@ static int spi_engine_probe(struct platform_device *pdev)
host->transfer_one_message = spi_engine_transfer_one_message;
host->num_chipselect = 8;
if (host->max_speed_hz == 0)
return dev_err_probe(&pdev->dev, -EINVAL, "spi_clk rate is 0");
ret = devm_spi_register_controller(&pdev->dev, host);
if (ret)
return ret;