diff options
| author |   Mark Brown <broonie@kernel.org> | 2015-08-20 11:52:18 -0700 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2015-08-21 10:24:04 -0700 |
| commit | 7dc9fbc342deb2e2658ebdecb5ffd7ff57945a66 (patch) | |
| tree | c80301fb53fda55f58c89eebbce0f37f0096159d /drivers/spi | |
| parent | Linux 4.2-rc2 (diff) | |
| download | linux-dev-7dc9fbc342deb2e2658ebdecb5ffd7ff57945a66.tar.xz linux-dev-7dc9fbc342deb2e2658ebdecb5ffd7ff57945a66.zip | |
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: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'drivers/spi')
| -rw-r--r-- | drivers/spi/spi.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/spi/spi.c b/drivers/spi/spi.c index cf8b91b23a76..637d892b316d 100644 --- a/drivers/spi/spi.c +++ b/drivers/spi/spi.c @@ -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) |