sgiwd93: convert to dma_alloc_noncoherent

Use the new non-coherent DMA API including proper ownership transfers.
This also means we can allocate the memory as DMA_TO_DEVICE instead
of bidirectional.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Tested-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>

diff --git a/drivers/scsi/sgiwd93.c b/drivers/scsi/sgiwd93.c
index 3bdf0de..cf1030c 100644 (file)
--- a/drivers/scsi/sgiwd93.c
+++ b/drivers/scsi/sgiwd93.c
@@ -95,7 +95,7 @@ void fill_hpc_entries(struct ip22_hostdata *hd, struct scsi_cmnd *cmd, int din)
         */
        hcp->desc.pbuf = 0;
        hcp->desc.cntinfo = HPCDMA_EOX;
-       dma_cache_sync(hd->dev, hd->cpu,
+       dma_sync_single_for_device(hd->dev, hd->dma,
                       (unsigned long)(hcp + 1) - (unsigned long)hd->cpu,
                       DMA_TO_DEVICE);
 }
@@ -234,8 +234,8 @@ static int sgiwd93_probe(struct platform_device *pdev)
 
        hdata = host_to_hostdata(host);
        hdata->dev = &pdev->dev;
-       hdata->cpu = dma_alloc_attrs(&pdev->dev, HPC_DMA_SIZE, &hdata->dma,
-                                    GFP_KERNEL, DMA_ATTR_NON_CONSISTENT);
+       hdata->cpu = dma_alloc_noncoherent(&pdev->dev, HPC_DMA_SIZE,
+                               &hdata->dma, DMA_TO_DEVICE, GFP_KERNEL);
        if (!hdata->cpu) {
                printk(KERN_WARNING "sgiwd93: Could not allocate memory for "
                       "host %d buffer.\n", unit);
@@ -274,8 +274,8 @@ static int sgiwd93_probe(struct platform_device *pdev)
 out_irq:
        free_irq(irq, host);
 out_free:
-       dma_free_attrs(&pdev->dev, HPC_DMA_SIZE, hdata->cpu, hdata->dma,
-                      DMA_ATTR_NON_CONSISTENT);
+       dma_free_noncoherent(&pdev->dev, HPC_DMA_SIZE, hdata->cpu, hdata->dma,
+                       DMA_TO_DEVICE);
 out_put:
        scsi_host_put(host);
 out:
@@ -291,8 +291,8 @@ static int sgiwd93_remove(struct platform_device *pdev)
 
        scsi_remove_host(host);
        free_irq(pd->irq, host);
-       dma_free_attrs(&pdev->dev, HPC_DMA_SIZE, hdata->cpu, hdata->dma,
-                      DMA_ATTR_NON_CONSISTENT);
+       dma_free_noncoherent(&pdev->dev, HPC_DMA_SIZE, hdata->cpu, hdata->dma,
+                       DMA_TO_DEVICE);
        scsi_host_put(host);
        return 0;
 }