[PATCH 2/5] spi: add controller driver for Atheros AR7XXX/AR9XXX SoCs

[Sascha Hauer]

On Sat, Apr 05, 2014 at 10:35:31PM +0400, Antony Pavlov wrote:
> +static int ath79_spi_setup(struct spi_device *spi)
> +{
> +	struct spi_master *master = spi->master;
> +	struct device_d spi_dev = spi->dev;
> +
> +	if (spi->bits_per_word != 8) {
> +		dev_err(master->dev, "master doesn't support %d bits per word requested by %s\n",
> +			spi->bits_per_word, spi_dev.name);
> +		return -1;
> +	}
> +
> +	if ((spi->mode & (SPI_CPHA | SPI_CPOL)) != SPI_MODE_0) {
> +		dev_err(master->dev, "master doesn't support SPI_MODE%d requested by %s\n",
> +			spi->mode & (SPI_CPHA | SPI_CPOL), spi_dev.name);
> +		return -1;
> +	}

Better -EINVAL?

Otherwise this series looks good.

Sascha

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