[23/28] Blackfin SPI: reject unsupported SPI modes

Commit Message

Mike Frysinger Oct. 17, 2010, 10:59 p.m. UTC

None

Patch

diff --git a/drivers/spi/spi_bfin5xx.c b/drivers/spi/spi_bfin5xx.c
index 18b313a..a91e556 100644
--- a/drivers/spi/spi_bfin5xx.c
+++ b/drivers/spi/spi_bfin5xx.c
@@ -1022,6 +1022,10 @@  static int bfin_spi_setup(struct spi_device *spi)
 	}
 
 	/* translate common spi framework into our register */
+	if (spi->mode & ~(SPI_CPOL | SPI_CPHA | SPI_LSB_FIRST)) {
+		dev_err(&spi->dev, "unsupported spi modes detected\n");
+		goto error;
+	}
 	if (spi->mode & SPI_CPOL)
 		chip->ctl_reg |= BIT_CTL_CPOL;
 	if (spi->mode & SPI_CPHA)