spi_imx: set spi_master.dma_alignment = 4

[linux-2.6-omap-h63xx.git] / drivers / spi / spi_imx.c

diff --git a/drivers/spi/spi_imx.c b/drivers/spi/spi_imx.c
index 269a55ec52ef0e617caff931c448056cc991c32a..0671aeef579221bf17c21b522a7905be253ca8a6 100644 (file)
--- a/drivers/spi/spi_imx.c
+++ b/drivers/spi/spi_imx.c
@@ -186,6 +186,7 @@
 #define QUEUE_STOPPED                  (1)
 
 #define IS_DMA_ALIGNED(x)              (((u32)(x) & 0x03) == 0)
+#define DMA_ALIGNMENT                  4
 /*-------------------------------------------------------------------------*/
 
 
@@ -779,7 +780,8 @@ static irqreturn_t interrupt_transfer(struct driver_data *drv_data)
 
                        /* Read trailing bytes */
                        limit = loops_per_jiffy << 1;
-                       while ((read(drv_data) == 0) && limit--);
+                       while ((read(drv_data) == 0) && --limit)
+                               cpu_relax();
 
                        if (limit == 0)
                                dev_err(&drv_data->pdev->dev,
@@ -1381,7 +1383,7 @@ static int __init init_queue(struct driver_data *drv_data)
 
        INIT_WORK(&drv_data->work, pump_messages);
        drv_data->workqueue = create_singlethread_workqueue(
-                                       drv_data->master->dev.parent->bus_id);
+                               dev_name(drv_data->master->dev.parent));
        if (drv_data->workqueue == NULL)
                return -EBUSY;
 
@@ -1481,6 +1483,7 @@ static int __init spi_imx_probe(struct platform_device *pdev)
 
        master->bus_num = pdev->id;
        master->num_chipselect = platform_info->num_chipselect;
+       master->dma_alignment = DMA_ALIGNMENT;
        master->cleanup = cleanup;
        master->setup = setup;
        master->transfer = transfer;
@@ -1525,7 +1528,8 @@ static int __init spi_imx_probe(struct platform_device *pdev)
                status = -ENODEV;
                goto err_no_irqres;
        }
-       status = request_irq(irq, spi_int, IRQF_DISABLED, dev->bus_id, drv_data);
+       status = request_irq(irq, spi_int, IRQF_DISABLED,
+                            dev_name(dev), drv_data);
        if (status < 0) {
                dev_err(&pdev->dev, "probe - cannot get IRQ (%d)\n", status);
                goto err_no_irqres;