diff options
| author |   Tudor Ambarus <tudor.ambarus@microchip.com> | 2020-12-09 19:35:14 +0200 |
|---|---|---|
| committer |   Mark Brown <broonie@kernel.org> | 2020-12-11 13:21:36 +0000 |
| commit | 9326e4f1e5dd1a4410c429638d3c412b6fc17040 (patch) | |
| tree | 8aecb1d047b1df2abbfa1ef323d2a724a6a61c77 /drivers/spi | |
| parent | spi: dw: Fix error return code in dw_spi_bt1_probe() (diff) | |
| download | linux-dev-9326e4f1e5dd1a4410c429638d3c412b6fc17040.tar.xz linux-dev-9326e4f1e5dd1a4410c429638d3c412b6fc17040.zip | |
spi: Limit the spi device max speed to controller's max speed
Make sure the max_speed_hz of spi_device does not override
the max_speed_hz of controller.
Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com>
Link: https://lore.kernel.org/r/20201209173514.93328-1-tudor.ambarus@microchip.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'drivers/spi')
| -rw-r--r-- | drivers/spi/spi.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/spi/spi.c b/drivers/spi/spi.c index fc9a59788d2e..45021d271da2 100644 --- a/drivers/spi/spi.c +++ b/drivers/spi/spi.c @@ -3369,7 +3369,8 @@ int spi_setup(struct spi_device *spi) if (status) return status; - if (!spi->max_speed_hz) + if (!spi->max_speed_hz || + spi->max_speed_hz > spi->controller->max_speed_hz) spi->max_speed_hz = spi->controller->max_speed_hz; mutex_lock(&spi->controller->io_mutex); |