fix console change race exposed by CFS

[pandora-kernel.git] / drivers / spi / pxa2xx_spi.c

diff --git a/drivers/spi/pxa2xx_spi.c b/drivers/spi/pxa2xx_spi.c
index dccdc50..e51311b 100644 (file)
--- a/drivers/spi/pxa2xx_spi.c
+++ b/drivers/spi/pxa2xx_spi.c
@@ -1067,6 +1067,9 @@ static int transfer(struct spi_device *spi, struct spi_message *msg)
        return 0;
 }
 
+/* the spi->mode bits understood by this driver: */
+#define MODEBITS (SPI_CPOL | SPI_CPHA)
+
 static int setup(struct spi_device *spi)
 {
        struct pxa2xx_spi_chip *chip_info = NULL;
@@ -1093,6 +1096,12 @@ static int setup(struct spi_device *spi)
                return -EINVAL;
        }
 
+       if (spi->mode & ~MODEBITS) {
+               dev_dbg(&spi->dev, "setup: unsupported mode bits %x\n",
+                       spi->mode & ~MODEBITS);
+               return -EINVAL;
+       }
+
        /* Only alloc on first setup */
        chip = spi_get_ctldata(spi);
        if (!chip) {
@@ -1214,9 +1223,9 @@ static int setup(struct spi_device *spi)
        return 0;
 }
 
-static void cleanup(const struct spi_device *spi)
+static void cleanup(struct spi_device *spi)
 {
-       struct chip_data *chip = spi_get_ctldata((struct spi_device *)spi);
+       struct chip_data *chip = spi_get_ctldata(spi);
 
        kfree(chip);
 }
@@ -1234,7 +1243,7 @@ static int init_queue(struct driver_data *drv_data)
 
        INIT_WORK(&drv_data->pump_messages, pump_messages);
        drv_data->workqueue = create_singlethread_workqueue(
-                                       drv_data->master->dev.parent->bus_id);
+                                       drv_data->master->cdev.dev->bus_id);
        if (drv_data->workqueue == NULL)
                return -EBUSY;