spi: omap-uwire: Remove needless bits_per_word and speed_hz tests

SPI core validates both bits_per_word and speed_hz transfer parameters and
defaults to spi->bits_per_word and spi->max_speed_hz in case these per
transfer parameters are not set. This allows to remove two needless tests
from uwire_txrx() and uwire_setup_transfer().
Signed-off-by: NJarkko Nikula <jarkko.nikula@linux.intel.com>
Signed-off-by: NMark Brown <broonie@kernel.org>

drivers/spi/spi-omap-uwire.c

@@ -205,7 +205,7 @@ static void uwire_chipselect(struct spi_device *spi, int value)
 static int uwire_txrx(struct spi_device *spi, struct spi_transfer *t)
 {
 	unsigned	len = t->len;
-	unsigned	bits = t->bits_per_word ? : spi->bits_per_word;
+	unsigned	bits = t->bits_per_word;
 	unsigned	bytes;
 	u16		val, w;
 	int		status = 0;
@@ -344,9 +344,10 @@ static int uwire_setup_transfer(struct spi_device *spi, struct spi_transfer *t)
 	/* assume it's already enabled */
 	rate = clk_get_rate(uwire->ck);
 
-	hz = spi->max_speed_hz;
-	if (t != NULL && t->speed_hz)
+	if (t != NULL)
 		hz = t->speed_hz;
+	else
+		hz = spi->max_speed_hz;
 
 	if (!hz) {
 		pr_debug("%s: zero speed?\n", dev_name(&spi->dev));