[U-Boot] [PATCH] spi: ignore set speed and mode if not available

[Thomas Chou]

Some cores, such as Altera SPI and QuadSPI, can not change
speed and mode at runtime. Ignore the operation which is
not available.

Signed-off-by: Thomas Chou <thomas at wytron.com.tw>
---
 drivers/spi/spi-uclass.c | 6 +-----
 1 file changed, 1 insertion(+), 5 deletions(-)

diff --git a/drivers/spi/spi-uclass.c b/drivers/spi/spi-uclass.c
index d666272..5298073 100644
--- a/drivers/spi/spi-uclass.c
+++ b/drivers/spi/spi-uclass.c
@@ -21,13 +21,11 @@ DECLARE_GLOBAL_DATA_PTR;
 static int spi_set_speed_mode(struct udevice *bus, int speed, int mode)
 {
 	struct dm_spi_ops *ops;
-	int ret;
+	int ret = 0;
 
 	ops = spi_get_ops(bus);
 	if (ops->set_speed)
 		ret = ops->set_speed(bus, speed);
-	else
-		ret = -EINVAL;
 	if (ret) {
 		printf("Cannot set speed (err=%d)\n", ret);
 		return ret;
@@ -35,8 +33,6 @@ static int spi_set_speed_mode(struct udevice *bus, int speed, int mode)
 
 	if (ops->set_mode)
 		ret = ops->set_mode(bus, mode);
-	else
-		ret = -EINVAL;
 	if (ret) {
 		printf("Cannot set mode (err=%d)\n", ret);
 		return ret;
-- 
2.1.4