spi: dw: Convert to let spi core validate transfer speed
Set master->max_speed_hz then spi core will handle checking transfer speed.
So we can remove the same checking in this driver.
Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
diff --git a/drivers/spi/spi-dw.c b/drivers/spi/spi-dw.c
index bf98d63..9e4a0aa 100644
--- a/drivers/spi/spi-dw.c
+++ b/drivers/spi/spi-dw.c
@@ -439,12 +439,6 @@
if (transfer->speed_hz != speed) {
speed = transfer->speed_hz;
- if (speed > dws->max_freq) {
- printk(KERN_ERR "MRST SPI0: unsupported"
- "freq: %dHz\n", speed);
- message->status = -EIO;
- goto early_exit;
- }
/* clk_div doesn't support odd number */
clk_div = dws->max_freq / speed;
@@ -809,6 +803,7 @@
master->cleanup = dw_spi_cleanup;
master->setup = dw_spi_setup;
master->transfer = dw_spi_transfer;
+ master->max_speed_hz = dws->max_freq;
/* Basic HW init */
spi_hw_init(dws);