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Commit 7dc9fbc3 authored by Mark Brown's avatar Mark Brown
Browse files

spi: Fall back to master maximum speed if no slave speed specified 



If a slave appears with no maximum transfer speed specified fall back to
using the maximum for the master instead.  It's questionable if we
should let slaves do this but let's be defensive.

Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent bc0195aa

drivers/spi/spi.c

+2 −0
Original line number Diff line number Diff line
@@ -1860,6 +1860,8 @@ static int __spi_validate(struct spi_device *spi, struct spi_message *message) 


		if (!xfer->speed_hz)

			xfer->speed_hz = spi->max_speed_hz;

		if (!xfer->speed_hz)

			xfer->speed_hz = master->max_speed_hz;



		if (master->max_speed_hz &&

		    xfer->speed_hz > master->max_speed_hz)