spi: xcomm: Remove duplicate code to set default bits_per_word and max speed
In the implementation of __spi_validate(), spi core will set transfer
bits_per_word and max speed as spi device default if it is not set for
this transfer. So we can remove the same logic in spi_xcomm_setup_transfer().
Also remove a redundant code to initialize is_first variable.
Signed-off-by: Axel Lin <axel.lin@ingics.com>
Acked-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Mark Brown <broonie@linaro.org>
diff --git a/drivers/spi/spi-xcomm.c b/drivers/spi/spi-xcomm.c
index 24c40b1..2505b7e 100644
--- a/drivers/spi/spi-xcomm.c
+++ b/drivers/spi/spi-xcomm.c
@@ -74,15 +74,13 @@
static int spi_xcomm_setup_transfer(struct spi_xcomm *spi_xcomm,
struct spi_device *spi, struct spi_transfer *t, unsigned int *settings)
{
- unsigned int speed;
-
if (t->len > 62)
return -EINVAL;
- speed = t->speed_hz ? t->speed_hz : spi->max_speed_hz;
+ if (t->speed_hz != spi_xcomm->current_speed) {
+ unsigned int divider;
- if (speed != spi_xcomm->current_speed) {
- unsigned int divider = DIV_ROUND_UP(SPI_XCOMM_CLOCK, speed);
+ divider = DIV_ROUND_UP(SPI_XCOMM_CLOCK, t->speed_hz);
if (divider >= 64)
*settings |= SPI_XCOMM_SETTINGS_CLOCK_DIV_64;
else if (divider >= 16)
@@ -90,7 +88,7 @@
else
*settings |= SPI_XCOMM_SETTINGS_CLOCK_DIV_4;
- spi_xcomm->current_speed = speed;
+ spi_xcomm->current_speed = t->speed_hz;
}
if (spi->mode & SPI_CPOL)
@@ -148,8 +146,6 @@
int status = 0;
bool is_last;
- is_first = true;
-
spi_xcomm_chipselect(spi_xcomm, spi, true);
list_for_each_entry(t, &msg->transfers, transfer_list) {