mfd: mc13xxx: Add missing spi_setup()

The probe routine should call spi_setup() to configure the SPI bus
so it can properly communicate with the device.

Signed-off-by: Alexander Shiyan <shc_work@mail.ru>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

1 files changed, 3 insertions, 0 deletions

diff --git a/drivers/mfd/mc13xxx-spi.c b/drivers/mfd/mc13xxx-spi.c
index ee81a67207de..702925e242c9 100644
--- a/drivers/mfd/mc13xxx-spi.c
+++ b/drivers/mfd/mc13xxx-spi.c
@@ -141,6 +141,9 @@ static int mc13xxx_spi_probe(struct spi_device *spi)
         mc13xxx->irq = spi->irq;
 
         spi->max_speed_hz = spi->max_speed_hz ? : 26000000;
+        ret = spi_setup(spi);
+        if (ret)
+                return ret;
 
         mc13xxx->regmap = devm_regmap_init(&spi->dev, &regmap_mc13xxx_bus,
                                            &spi->dev,