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spi/bcm63xx: check spi bits_per_word in spi_setup

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Instead of fixing up the bits_per_word (which the spi subsystem already
does for us), check it for supported values.

Signed-off-by: Jonas Gorski <jogo@openwrt.org>
Acked-by: Florian Fainelli <florian@openwrt.org>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
This commit is contained in:
Jonas Gorski 2013-03-12 00:13:42 +01:00 committed by Mark Brown
parent 52f83bbd65
commit e2bdae0632
1 changed files with 5 additions and 2 deletions
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7
drivers/spi/spi-bcm63xx.c
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@ -151,8 +151,11 @@ static void bcm63xx_spi_setup_transfer(struct spi_device *spi,
static int bcm63xx_spi_setup(struct spi_device *spi)
{
if (!spi->bits_per_word)
spi->bits_per_word = 8;
if (spi->bits_per_word != 8) {
dev_err(&spi->dev, "%s, unsupported bits_per_word=%d\n",
__func__, spi->bits_per_word);
return -EINVAL;
}
return 0;
}