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>

1 files changed, 1 insertions, 6 deletions

diff --git a/drivers/spi/spi-dw.c b/drivers/spi/spi-dw.c
index bf98d63d92b3..9e4a0aa7d341 100644
--- 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);