Merge branch 'unstable/dma-for-next' into for-next

Conflicts:
	drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c

5 files changed, 22 insertions, 9 deletions

diff --git a/drivers/dma/amba-pl08x.c b/drivers/dma/amba-pl08x.c
index fce46c5bf1c7..e51a9832ef0d 100644
--- a/drivers/dma/amba-pl08x.c
+++ b/drivers/dma/amba-pl08x.c
@@ -2055,6 +2055,11 @@ static int pl08x_probe(struct amba_device *adev, const struct amba_id *id)
 	if (ret)
 		return ret;
 
+	/* Ensure that we can do DMA */
+	ret = dma_set_mask_and_coherent(&adev->dev, DMA_BIT_MASK(32));
+	if (ret)
+		goto out_no_pl08x;
+
 	/* Create the driver state holder */
 	pl08x = kzalloc(sizeof(*pl08x), GFP_KERNEL);
 	if (!pl08x) {
diff --git a/drivers/dma/dw/platform.c b/drivers/dma/dw/platform.c
index e35d97590311..453822cc4f9d 100644
--- a/drivers/dma/dw/platform.c
+++ b/drivers/dma/dw/platform.c
@@ -191,11 +191,9 @@ static int dw_probe(struct platform_device *pdev)
 	if (IS_ERR(chip->regs))
 		return PTR_ERR(chip->regs);
 
-	/* Apply default dma_mask if needed */
-	if (!dev->dma_mask) {
-		dev->dma_mask = &dev->coherent_dma_mask;
-		dev->coherent_dma_mask = DMA_BIT_MASK(32);
-	}
+	err = dma_coerce_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
+	if (err)
+		return err;
 
 	pdata = dev_get_platdata(dev);
 	if (!pdata)
diff --git a/drivers/dma/edma.c b/drivers/dma/edma.c
index 10b577fcf48d..bef8a368c8dd 100644
--- a/drivers/dma/edma.c
+++ b/drivers/dma/edma.c
@@ -634,6 +634,10 @@ static int edma_probe(struct platform_device *pdev)
 	struct edma_cc *ecc;
 	int ret;
 
+	ret = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
+	if (ret)
+		return ret;
+
 	ecc = devm_kzalloc(&pdev->dev, sizeof(*ecc), GFP_KERNEL);
 	if (!ecc) {
 		dev_err(&pdev->dev, "Can't allocate controller\n");
@@ -705,11 +709,13 @@ static struct platform_device *pdev0, *pdev1;
 static const struct platform_device_info edma_dev_info0 = {
 	.name = "edma-dma-engine",
 	.id = 0,
+	.dma_mask = DMA_BIT_MASK(32),
 };
 
 static const struct platform_device_info edma_dev_info1 = {
 	.name = "edma-dma-engine",
 	.id = 1,
+	.dma_mask = DMA_BIT_MASK(32),
 };
 
 static int edma_init(void)
@@ -723,8 +729,6 @@ static int edma_init(void)
 			ret = PTR_ERR(pdev0);
 			goto out;
 		}
-		pdev0->dev.dma_mask = &pdev0->dev.coherent_dma_mask;
-		pdev0->dev.coherent_dma_mask = DMA_BIT_MASK(32);
 	}
 
 	if (EDMA_CTLRS == 2) {
@@ -734,8 +738,6 @@ static int edma_init(void)
 			platform_device_unregister(pdev0);
 			ret = PTR_ERR(pdev1);
 		}
-		pdev1->dev.dma_mask = &pdev1->dev.coherent_dma_mask;
-		pdev1->dev.coherent_dma_mask = DMA_BIT_MASK(32);
 	}
 
 out:
diff --git a/drivers/dma/imx-sdma.c b/drivers/dma/imx-sdma.c
index fc43603cf0bb..c1fd504cae28 100644
--- a/drivers/dma/imx-sdma.c
+++ b/drivers/dma/imx-sdma.c
@@ -1432,6 +1432,10 @@ static int __init sdma_probe(struct platform_device *pdev)
 		return -EINVAL;
 	}
 
+	ret = dma_coerce_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
+	if (ret)
+		return ret;
+
 	sdma = kzalloc(sizeof(*sdma), GFP_KERNEL);
 	if (!sdma)
 		return -ENOMEM;
diff --git a/drivers/dma/pl330.c b/drivers/dma/pl330.c
index a562d24d20bf..df8b10fd1726 100644
--- a/drivers/dma/pl330.c
+++ b/drivers/dma/pl330.c
@@ -2903,6 +2903,10 @@ pl330_probe(struct amba_device *adev, const struct amba_id *id)
 
 	pdat = dev_get_platdata(&adev->dev);
 
+	ret = dma_set_mask_and_coherent(&adev->dev, DMA_BIT_MASK(32));
+	if (ret)
+		return ret;
+
 	/* Allocate a new DMAC and its Channels */
 	pdmac = devm_kzalloc(&adev->dev, sizeof(*pdmac), GFP_KERNEL);
 	if (!pdmac) {