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 bf98d63d92b3eabbd80ea49d125421069139c535..9e4a0aa7d341782c5df5e9b2538a0e6e2f56ff05 100644 (file)
--- a/drivers/spi/spi-dw.c
+++ b/drivers/spi/spi-dw.c
@@ -439,12 +439,6 @@ static void pump_transfers(unsigned long data)
 
                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 @@ int dw_spi_add_host(struct device *dev, struct dw_spi *dws)
        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);