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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>
This commit is contained in:
Axel Lin 2014-02-20 21:37:56 +08:00 committed by Mark Brown
parent 794f61a30e
commit 765ee709eb
1 changed files with 1 additions and 6 deletions
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7
drivers/spi/spi-dw.c
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@ -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);