spi: sc18is602: Remove sc18is602_setup() because it is done by spi core

The checking for spi->mode is done in the implementation of spi_setup().
Calling sc18is602_check_transfer(spi, NULL, 0) is pointless because
the code is equivent to checking if spi->max_speed_hz is 0.
Note, sc18is602_check_transfer actually allows spi->max_speed_hz is 0
if t->speed_hz is set. So return error in sc18is602_setup() when
spi->max_speed_hz is 0 does not make sense.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Acked-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Mark Brown <broonie@linaro.org>

1 files changed, 0 insertions, 9 deletions

diff --git a/drivers/spi/spi-sc18is602.c b/drivers/spi/spi-sc18is602.c
index 121c2e1dea36..b3ac776def9b 100644
--- a/drivers/spi/spi-sc18is602.c
+++ b/drivers/spi/spi-sc18is602.c
@@ -245,14 +245,6 @@ error:
         return status;
 }
 
-static int sc18is602_setup(struct spi_device *spi)
-{
-        if (spi->mode & ~(SPI_CPHA | SPI_CPOL | SPI_LSB_FIRST))
-                return -EINVAL;
-
-        return sc18is602_check_transfer(spi, NULL, 0);
-}
-
 static int sc18is602_probe(struct i2c_client *client,
                            const struct i2c_device_id *id)
 {
@@ -306,7 +298,6 @@ static int sc18is602_probe(struct i2c_client *client,
         master->bus_num = client->adapter->nr;
         master->mode_bits = SPI_CPHA | SPI_CPOL | SPI_LSB_FIRST;
         master->bits_per_word_mask = SPI_BPW_MASK(8);
-        master->setup = sc18is602_setup;
         master->transfer_one_message = sc18is602_transfer_one;
         master->dev.of_node = np;