Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland...

[linux-2.6] / drivers / spi / omap_uwire.c

diff --git a/drivers/spi/omap_uwire.c b/drivers/spi/omap_uwire.c
index 95183e1df525c6a1a14ac6244d0f94f5fc3d05ea..d275c615a73ecb7a516689595c9c9c8dca322062 100644 (file)
--- a/drivers/spi/omap_uwire.c
+++ b/drivers/spi/omap_uwire.c
@@ -445,10 +445,19 @@ done:
        return status;
 }
 
+/* the spi->mode bits understood by this driver: */
+#define MODEBITS (SPI_CPOL | SPI_CPHA | SPI_CS_HIGH)
+
 static int uwire_setup(struct spi_device *spi)
 {
        struct uwire_state *ust = spi->controller_state;
 
+       if (spi->mode & ~MODEBITS) {
+               dev_dbg(&spi->dev, "setup: unsupported mode bits %x\n",
+                       spi->mode & ~MODEBITS);
+               return -EINVAL;
+       }
+
        if (ust == NULL) {
                ust = kzalloc(sizeof(*ust), GFP_KERNEL);
                if (ust == NULL)