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spi/bfin_spi: reject unsupported SPI modes
Who knows what people will try! Signed-off-by: Mike Frysinger <vapier@gentoo.org>
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1 changed files with 4 additions and 0 deletions
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@ -1022,6 +1022,10 @@ static int bfin_spi_setup(struct spi_device *spi)
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}
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/* translate common spi framework into our register */
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if (spi->mode & ~(SPI_CPOL | SPI_CPHA | SPI_LSB_FIRST)) {
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dev_err(&spi->dev, "unsupported spi modes detected\n");
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goto error;
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}
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if (spi->mode & SPI_CPOL)
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chip->ctl_reg |= BIT_CTL_CPOL;
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if (spi->mode & SPI_CPHA)
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