Unverified Commit 9326e4f1 authored by Tudor Ambarus's avatar Tudor Ambarus Committed by Mark Brown
Browse files

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: default avatarTudor Ambarus <tudor.ambarus@microchip.com>
Link: https://lore.kernel.org/r/20201209173514.93328-1-tudor.ambarus@microchip.com


Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent e748edd9

drivers/spi/spi.c

+2 −1
Original line number Diff line number Diff line
@@ -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);