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spi: octeon: Convert to let spi core validate transfer speed

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Set master->max_speed_hz then spi core will handle checking transfer speed.
The behavior is different from current code when the speed_hz is greater than
the maximum transfer speed supported by the controller.
Unless there is other good reason, I think we had better make the behavior
consistent with what spi core does.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
This commit is contained in:
Axel Lin 2014-02-19 17:34:47 +08:00 committed by Mark Brown
parent 85fe414d32
commit 7984b5ca5c
1 changed files with 1 additions and 2 deletions
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3
drivers/spi/spi-octeon.c
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@ -67,8 +67,6 @@ static int octeon_spi_do_transfer(struct octeon_spi *p,
cpol = mode & SPI_CPOL;
speed_hz = xfer->speed_hz ? : spi->max_speed_hz;
if (speed_hz > OCTEON_SPI_MAX_CLOCK_HZ)
speed_hz = OCTEON_SPI_MAX_CLOCK_HZ;
clkdiv = octeon_get_io_clock_rate() / (2 * speed_hz);
@ -214,6 +212,7 @@ static int octeon_spi_probe(struct platform_device *pdev)
master->transfer_one_message = octeon_spi_transfer_one_message;
master->bits_per_word_mask = SPI_BPW_MASK(8);
master->max_speed_hz = OCTEON_SPI_MAX_CLOCK_HZ;
master->dev.of_node = pdev->dev.of_node;
err = devm_spi_register_master(&pdev->dev, master);