26 files changed, 353 insertions, 276 deletions
diff --git a/drivers/dma/dmatest.c b/drivers/dma/dmatest.c
index 24225f0fdcd8..64b048d7fba7 100644
--- a/drivers/dma/dmatest.c
+++ b/drivers/dma/dmatest.c
@@ -228,6 +228,20 @@ static void dmatest_callback(void *arg)
 	wake_up_all(done->wait);
 }
 
+static inline void unmap_src(struct device *dev, dma_addr_t *addr, size_t len,
+			     unsigned int count)
+{
+	while (count--)
+		dma_unmap_single(dev, addr[count], len, DMA_TO_DEVICE);
+}
+
+static inline void unmap_dst(struct device *dev, dma_addr_t *addr, size_t len,
+			     unsigned int count)
+{
+	while (count--)
+		dma_unmap_single(dev, addr[count], len, DMA_BIDIRECTIONAL);
+}
+
 /*
  * This function repeatedly tests DMA transfers of various lengths and
  * offsets for a given operation type until it is told to exit by
@@ -353,15 +367,35 @@ static int dmatest_func(void *data)
 
 			dma_srcs[i] = dma_map_single(dev->dev, buf, len,
 						     DMA_TO_DEVICE);
+			ret = dma_mapping_error(dev->dev, dma_srcs[i]);
+			if (ret) {
+				unmap_src(dev->dev, dma_srcs, len, i);
+				pr_warn("%s: #%u: mapping error %d with "
+					"src_off=0x%x len=0x%x\n",
+					thread_name, total_tests - 1, ret,
+					src_off, len);
+				failed_tests++;
+				continue;
+			}
 		}
 		/* map with DMA_BIDIRECTIONAL to force writeback/invalidate */
 		for (i = 0; i < dst_cnt; i++) {
 			dma_dsts[i] = dma_map_single(dev->dev, thread->dsts[i],
 						     test_buf_size,
 						     DMA_BIDIRECTIONAL);
+			ret = dma_mapping_error(dev->dev, dma_dsts[i]);
+			if (ret) {
+				unmap_src(dev->dev, dma_srcs, len, src_cnt);
+				unmap_dst(dev->dev, dma_dsts, test_buf_size, i);
+				pr_warn("%s: #%u: mapping error %d with "
+					"dst_off=0x%x len=0x%x\n",
+					thread_name, total_tests - 1, ret,
+					dst_off, test_buf_size);
+				failed_tests++;
+				continue;
+			}
 		}
 
-
 		if (thread->type == DMA_MEMCPY)
 			tx = dev->device_prep_dma_memcpy(chan,
 							 dma_dsts[0] + dst_off,
@@ -383,13 +417,8 @@ static int dmatest_func(void *data)
 		}
 
 		if (!tx) {
-			for (i = 0; i < src_cnt; i++)
-				dma_unmap_single(dev->dev, dma_srcs[i], len,
-						 DMA_TO_DEVICE);
-			for (i = 0; i < dst_cnt; i++)
-				dma_unmap_single(dev->dev, dma_dsts[i],
-						 test_buf_size,
-						 DMA_BIDIRECTIONAL);
+			unmap_src(dev->dev, dma_srcs, len, src_cnt);
+			unmap_dst(dev->dev, dma_dsts, test_buf_size, dst_cnt);
 			pr_warning("%s: #%u: prep error with src_off=0x%x "
 					"dst_off=0x%x len=0x%x\n",
 					thread_name, total_tests - 1,
@@ -443,9 +472,7 @@ static int dmatest_func(void *data)
 		}
 
 		/* Unmap by myself (see DMA_COMPL_SKIP_DEST_UNMAP above) */
-		for (i = 0; i < dst_cnt; i++)
-			dma_unmap_single(dev->dev, dma_dsts[i], test_buf_size,
-					 DMA_BIDIRECTIONAL);
+		unmap_dst(dev->dev, dma_dsts, test_buf_size, dst_cnt);
 
 		error_count = 0;
 
diff --git a/drivers/dma/dw_dmac.c b/drivers/dma/dw_dmac.c
index 8f0b111af4de..3e8ba02ba292 100644
--- a/drivers/dma/dw_dmac.c
+++ b/drivers/dma/dw_dmac.c
@@ -1634,7 +1634,7 @@ static int dw_probe(struct platform_device *pdev)
 	return 0;
 }
 
-static int __devexit dw_remove(struct platform_device *pdev)
+static int dw_remove(struct platform_device *pdev)
 {
 	struct dw_dma		*dw = platform_get_drvdata(pdev);
 	struct dw_dma_chan	*dwc, *_dwc;
diff --git a/drivers/dma/edma.c b/drivers/dma/edma.c
index 232b4583ae93..f424298f1ac5 100644
--- a/drivers/dma/edma.c
+++ b/drivers/dma/edma.c
@@ -585,7 +585,7 @@ err_reg1:
 	return ret;
 }
 
-static int __devexit edma_remove(struct platform_device *pdev)
+static int edma_remove(struct platform_device *pdev)
 {
 	struct device *dev = &pdev->dev;
 	struct edma_cc *ecc = dev_get_drvdata(dev);
diff --git a/drivers/dma/imx-dma.c b/drivers/dma/imx-dma.c
index dbf0e6f8de8a..a7dcf78b1ff8 100644
--- a/drivers/dma/imx-dma.c
+++ b/drivers/dma/imx-dma.c
@@ -684,9 +684,8 @@ static int imxdma_control(struct dma_chan *chan, enum dma_ctrl_cmd cmd,
 			break;
 		}
 
-		imxdmac->hw_chaining = 1;
-		if (!imxdma_hw_chain(imxdmac))
-			return -EINVAL;
+		imxdmac->hw_chaining = 0;
+
 		imxdmac->ccr_from_device = (mode | IMX_DMA_TYPE_FIFO) |
 			((IMX_DMA_MEMSIZE_32 | IMX_DMA_TYPE_LINEAR) << 2) |
 			CCR_REN;
diff --git a/drivers/dma/intel_mid_dma.c b/drivers/dma/intel_mid_dma.c
index bc764afacd9b..a0de82e21a7c 100644
--- a/drivers/dma/intel_mid_dma.c
+++ b/drivers/dma/intel_mid_dma.c
@@ -1308,7 +1308,7 @@ err_enable_device:
  * Free up all resources and data
  * Call shutdown_dma to complete contoller and chan cleanup
  */
-static void __devexit intel_mid_dma_remove(struct pci_dev *pdev)
+static void intel_mid_dma_remove(struct pci_dev *pdev)
 {
 	struct middma_device *device = pci_get_drvdata(pdev);
 
diff --git a/drivers/dma/ioat/dca.c b/drivers/dma/ioat/dca.c
index d6668071bd0d..9b041858d10d 100644
--- a/drivers/dma/ioat/dca.c
+++ b/drivers/dma/ioat/dca.c
@@ -242,8 +242,7 @@ static struct dca_ops ioat_dca_ops = {
 };
 
 
-struct dca_provider * __devinit
-ioat_dca_init(struct pci_dev *pdev, void __iomem *iobase)
+struct dca_provider *ioat_dca_init(struct pci_dev *pdev, void __iomem *iobase)
 {
 	struct dca_provider *dca;
 	struct ioat_dca_priv *ioatdca;
@@ -408,8 +407,7 @@ static int ioat2_dca_count_dca_slots(void __iomem *iobase, u16 dca_offset)
 	return slots;
 }
 
-struct dca_provider * __devinit
-ioat2_dca_init(struct pci_dev *pdev, void __iomem *iobase)
+struct dca_provider *ioat2_dca_init(struct pci_dev *pdev, void __iomem *iobase)
 {
 	struct dca_provider *dca;
 	struct ioat_dca_priv *ioatdca;
@@ -621,8 +619,7 @@ static inline int dca3_tag_map_invalid(u8 *tag_map)
 		(tag_map[4] == DCA_TAG_MAP_VALID));
 }
 
-struct dca_provider * __devinit
-ioat3_dca_init(struct pci_dev *pdev, void __iomem *iobase)
+struct dca_provider *ioat3_dca_init(struct pci_dev *pdev, void __iomem *iobase)
 {
 	struct dca_provider *dca;
 	struct ioat_dca_priv *ioatdca;
diff --git a/drivers/dma/ioat/dma.c b/drivers/dma/ioat/dma.c
index 73b2b65cb1de..1a68a8ba87e6 100644
--- a/drivers/dma/ioat/dma.c
+++ b/drivers/dma/ioat/dma.c
@@ -782,7 +782,7 @@ static void ioat1_dma_start_null_desc(struct ioat_dma_chan *ioat)
  */
 #define IOAT_TEST_SIZE 2000
 
-static void __devinit ioat_dma_test_callback(void *dma_async_param)
+static void ioat_dma_test_callback(void *dma_async_param)
 {
 	struct completion *cmp = dma_async_param;
 
@@ -793,7 +793,7 @@ static void __devinit ioat_dma_test_callback(void *dma_async_param)
  * ioat_dma_self_test - Perform a IOAT transaction to verify the HW works.
  * @device: device to be tested
  */
-int __devinit ioat_dma_self_test(struct ioatdma_device *device)
+int ioat_dma_self_test(struct ioatdma_device *device)
 {
 	int i;
 	u8 *src;
@@ -994,7 +994,7 @@ static void ioat_disable_interrupts(struct ioatdma_device *device)
 	writeb(0, device->reg_base + IOAT_INTRCTRL_OFFSET);
 }
 
-int __devinit ioat_probe(struct ioatdma_device *device)
+int ioat_probe(struct ioatdma_device *device)
 {
 	int err = -ENODEV;
 	struct dma_device *dma = &device->common;
@@ -1049,7 +1049,7 @@ err_dma_pool:
 	return err;
 }
 
-int __devinit ioat_register(struct ioatdma_device *device)
+int ioat_register(struct ioatdma_device *device)
 {
 	int err = dma_async_device_register(&device->common);
 
@@ -1183,7 +1183,7 @@ void ioat_kobject_del(struct ioatdma_device *device)
 	}
 }
 
-int __devinit ioat1_dma_probe(struct ioatdma_device *device, int dca)
+int ioat1_dma_probe(struct ioatdma_device *device, int dca)
 {
 	struct pci_dev *pdev = device->pdev;
 	struct dma_device *dma;
@@ -1216,7 +1216,7 @@ int __devinit ioat1_dma_probe(struct ioatdma_device *device, int dca)
 	return err;
 }
 
-void __devexit ioat_dma_remove(struct ioatdma_device *device)
+void ioat_dma_remove(struct ioatdma_device *device)
 {
 	struct dma_device *dma = &device->common;
 
diff --git a/drivers/dma/ioat/dma.h b/drivers/dma/ioat/dma.h
index 5e8fe01ba69d..087935f1565f 100644
--- a/drivers/dma/ioat/dma.h
+++ b/drivers/dma/ioat/dma.h
@@ -303,13 +303,12 @@ static inline void ioat_unmap(struct pci_dev *pdev, dma_addr_t addr, size_t len,
 		pci_unmap_page(pdev, addr, len, direction);
 }
 
-int __devinit ioat_probe(struct ioatdma_device *device);
-int __devinit ioat_register(struct ioatdma_device *device);
-int __devinit ioat1_dma_probe(struct ioatdma_device *dev, int dca);
-int __devinit ioat_dma_self_test(struct ioatdma_device *device);
-void __devexit ioat_dma_remove(struct ioatdma_device *device);
-struct dca_provider * __devinit ioat_dca_init(struct pci_dev *pdev,
-					      void __iomem *iobase);
+int ioat_probe(struct ioatdma_device *device);
+int ioat_register(struct ioatdma_device *device);
+int ioat1_dma_probe(struct ioatdma_device *dev, int dca);
+int ioat_dma_self_test(struct ioatdma_device *device);
+void ioat_dma_remove(struct ioatdma_device *device);
+struct dca_provider *ioat_dca_init(struct pci_dev *pdev, void __iomem *iobase);
 dma_addr_t ioat_get_current_completion(struct ioat_chan_common *chan);
 void ioat_init_channel(struct ioatdma_device *device,
 		       struct ioat_chan_common *chan, int idx);
diff --git a/drivers/dma/ioat/dma_v2.c b/drivers/dma/ioat/dma_v2.c
index b9d667851445..82d4e306c32e 100644
--- a/drivers/dma/ioat/dma_v2.c
+++ b/drivers/dma/ioat/dma_v2.c
@@ -862,7 +862,7 @@ struct kobj_type ioat2_ktype = {
 	.default_attrs = ioat2_attrs,
 };
 
-int __devinit ioat2_dma_probe(struct ioatdma_device *device, int dca)
+int ioat2_dma_probe(struct ioatdma_device *device, int dca)
 {
 	struct pci_dev *pdev = device->pdev;
 	struct dma_device *dma;
diff --git a/drivers/dma/ioat/dma_v2.h b/drivers/dma/ioat/dma_v2.h
index be2a55b95c23..e100f644e344 100644
--- a/drivers/dma/ioat/dma_v2.h
+++ b/drivers/dma/ioat/dma_v2.h
@@ -155,10 +155,10 @@ static inline void ioat2_set_chainaddr(struct ioat2_dma_chan *ioat, u64 addr)
 	       chan->reg_base + IOAT2_CHAINADDR_OFFSET_HIGH);
 }
 
-int __devinit ioat2_dma_probe(struct ioatdma_device *dev, int dca);
-int __devinit ioat3_dma_probe(struct ioatdma_device *dev, int dca);
-struct dca_provider * __devinit ioat2_dca_init(struct pci_dev *pdev, void __iomem *iobase);
-struct dca_provider * __devinit ioat3_dca_init(struct pci_dev *pdev, void __iomem *iobase);
+int ioat2_dma_probe(struct ioatdma_device *dev, int dca);
+int ioat3_dma_probe(struct ioatdma_device *dev, int dca);
+struct dca_provider *ioat2_dca_init(struct pci_dev *pdev, void __iomem *iobase);
+struct dca_provider *ioat3_dca_init(struct pci_dev *pdev, void __iomem *iobase);
 int ioat2_check_space_lock(struct ioat2_dma_chan *ioat, int num_descs);
 int ioat2_enumerate_channels(struct ioatdma_device *device);
 struct dma_async_tx_descriptor *
diff --git a/drivers/dma/ioat/dma_v3.c b/drivers/dma/ioat/dma_v3.c
index f7f1dc62c15c..3e9d66920eb3 100644
--- a/drivers/dma/ioat/dma_v3.c
+++ b/drivers/dma/ioat/dma_v3.c
@@ -836,7 +836,7 @@ ioat3_prep_interrupt_lock(struct dma_chan *c, unsigned long flags)
 	return &desc->txd;
 }
 
-static void __devinit ioat3_dma_test_callback(void *dma_async_param)
+static void ioat3_dma_test_callback(void *dma_async_param)
 {
 	struct completion *cmp = dma_async_param;
 
@@ -844,7 +844,7 @@ static void __devinit ioat3_dma_test_callback(void *dma_async_param)
 }
 
 #define IOAT_NUM_SRC_TEST 6 /* must be <= 8 */
-static int __devinit ioat_xor_val_self_test(struct ioatdma_device *device)
+static int ioat_xor_val_self_test(struct ioatdma_device *device)
 {
 	int i, src_idx;
 	struct page *dest;
@@ -951,7 +951,7 @@ static int __devinit ioat_xor_val_self_test(struct ioatdma_device *device)
 			goto free_resources;
 		}
 	}
-	dma_sync_single_for_device(dev, dest_dma, PAGE_SIZE, DMA_TO_DEVICE);
+	dma_sync_single_for_device(dev, dest_dma, PAGE_SIZE, DMA_FROM_DEVICE);
 
 	/* skip validate if the capability is not present */
 	if (!dma_has_cap(DMA_XOR_VAL, dma_chan->device->cap_mask))
@@ -1096,7 +1096,7 @@ out:
 	return err;
 }
 
-static int __devinit ioat3_dma_self_test(struct ioatdma_device *device)
+static int ioat3_dma_self_test(struct ioatdma_device *device)
 {
 	int rc = ioat_dma_self_test(device);
 
@@ -1187,7 +1187,7 @@ static bool is_snb_ioat(struct pci_dev *pdev)
 	}
 }
 
-int __devinit ioat3_dma_probe(struct ioatdma_device *device, int dca)
+int ioat3_dma_probe(struct ioatdma_device *device, int dca)
 {
 	struct pci_dev *pdev = device->pdev;
 	int dca_en = system_has_dca_enabled(pdev);
diff --git a/drivers/dma/ioat/pci.c b/drivers/dma/ioat/pci.c
index bfa9a3536e09..4f686c527ab6 100644
--- a/drivers/dma/ioat/pci.c
+++ b/drivers/dma/ioat/pci.c
@@ -109,9 +109,8 @@ static struct pci_device_id ioat_pci_tbl[] = {
 };
 MODULE_DEVICE_TABLE(pci, ioat_pci_tbl);
 
-static int __devinit ioat_pci_probe(struct pci_dev *pdev,
-				    const struct pci_device_id *id);
-static void __devexit ioat_remove(struct pci_dev *pdev);
+static int ioat_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id);
+static void ioat_remove(struct pci_dev *pdev);
 
 static int ioat_dca_enabled = 1;
 module_param(ioat_dca_enabled, int, 0644);
@@ -141,7 +140,7 @@ alloc_ioatdma(struct pci_dev *pdev, void __iomem *iobase)
 	return d;
 }
 
-static int __devinit ioat_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id)
+static int ioat_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id)
 {
 	void __iomem * const *iomap;
 	struct device *dev = &pdev->dev;
@@ -195,7 +194,7 @@ static int __devinit ioat_pci_probe(struct pci_dev *pdev, const struct pci_devic
 	return 0;
 }
 
-static void __devexit ioat_remove(struct pci_dev *pdev)
+static void ioat_remove(struct pci_dev *pdev)
 {
 	struct ioatdma_device *device = pci_get_drvdata(pdev);
 
diff --git a/drivers/dma/iop-adma.c b/drivers/dma/iop-adma.c
index 9072e173b860..eacb8be99812 100644
--- a/drivers/dma/iop-adma.c
+++ b/drivers/dma/iop-adma.c
@@ -1406,7 +1406,7 @@ out:
 }
 #endif
 
-static int __devexit iop_adma_remove(struct platform_device *dev)
+static int iop_adma_remove(struct platform_device *dev)
 {
 	struct iop_adma_device *device = platform_get_drvdata(dev);
 	struct dma_chan *chan, *_chan;
diff --git a/drivers/dma/mmp_pdma.c b/drivers/dma/mmp_pdma.c
index 13bdf4a7e1ec..c6d98c00f05c 100644
--- a/drivers/dma/mmp_pdma.c
+++ b/drivers/dma/mmp_pdma.c
@@ -712,7 +712,7 @@ static void dma_do_tasklet(unsigned long data)
 	}
 }
 
-static int __devexit mmp_pdma_remove(struct platform_device *op)
+static int mmp_pdma_remove(struct platform_device *op)
 {
 	struct mmp_pdma_device *pdev = platform_get_drvdata(op);
 
diff --git a/drivers/dma/mmp_tdma.c b/drivers/dma/mmp_tdma.c
index 323821c0c095..a9f1cd56689c 100644
--- a/drivers/dma/mmp_tdma.c
+++ b/drivers/dma/mmp_tdma.c
@@ -467,7 +467,7 @@ static void mmp_tdma_issue_pending(struct dma_chan *chan)
 	mmp_tdma_enable_chan(tdmac);
 }
 
-static int __devexit mmp_tdma_remove(struct platform_device *pdev)
+static int mmp_tdma_remove(struct platform_device *pdev)
 {
 	struct mmp_tdma_device *tdev = platform_get_drvdata(pdev);
 
diff --git a/drivers/dma/mpc512x_dma.c b/drivers/dma/mpc512x_dma.c
index 2cd024a91d40..2d956732aa3d 100644
--- a/drivers/dma/mpc512x_dma.c
+++ b/drivers/dma/mpc512x_dma.c
@@ -799,7 +799,7 @@ static int mpc_dma_probe(struct platform_device *op)
 	return retval;
 }
 
-static int __devexit mpc_dma_remove(struct platform_device *op)
+static int mpc_dma_remove(struct platform_device *op)
 {
 	struct device *dev = &op->dev;
 	struct mpc_dma *mdma = dev_get_drvdata(dev);
diff --git a/drivers/dma/mv_xor.c b/drivers/dma/mv_xor.c
index d12ad00da4cb..e17fad03cb80 100644
--- a/drivers/dma/mv_xor.c
+++ b/drivers/dma/mv_xor.c
@@ -26,6 +26,9 @@
 #include <linux/platform_device.h>
 #include <linux/memory.h>
 #include <linux/clk.h>
+#include <linux/of.h>
+#include <linux/of_irq.h>
+#include <linux/irqdomain.h>
 #include <linux/platform_data/dma-mv_xor.h>
 
 #include "dmaengine.h"
@@ -34,14 +37,14 @@
 static void mv_xor_issue_pending(struct dma_chan *chan);
 
 #define to_mv_xor_chan(chan)		\
-	container_of(chan, struct mv_xor_chan, common)
-
-#define to_mv_xor_device(dev)		\
-	container_of(dev, struct mv_xor_device, common)
+	container_of(chan, struct mv_xor_chan, dmachan)
 
 #define to_mv_xor_slot(tx)		\
 	container_of(tx, struct mv_xor_desc_slot, async_tx)
 
+#define mv_chan_to_devp(chan)           \
+	((chan)->dmadev.dev)
+
 static void mv_desc_init(struct mv_xor_desc_slot *desc, unsigned long flags)
 {
 	struct mv_xor_desc *hw_desc = desc->hw_desc;
@@ -166,7 +169,7 @@ static int mv_is_err_intr(u32 intr_cause)
 static void mv_xor_device_clear_eoc_cause(struct mv_xor_chan *chan)
 {
 	u32 val = ~(1 << (chan->idx * 16));
-	dev_dbg(chan->device->common.dev, "%s, val 0x%08x\n", __func__, val);
+	dev_dbg(mv_chan_to_devp(chan), "%s, val 0x%08x\n", __func__, val);
 	__raw_writel(val, XOR_INTR_CAUSE(chan));
 }
 
@@ -206,9 +209,9 @@ static void mv_set_mode(struct mv_xor_chan *chan,
 		op_mode = XOR_OPERATION_MODE_MEMSET;
 		break;
 	default:
-		dev_printk(KERN_ERR, chan->device->common.dev,
-			   "error: unsupported operation %d.\n",
-			   type);
+		dev_err(mv_chan_to_devp(chan),
+			"error: unsupported operation %d.\n",
+			type);
 		BUG();
 		return;
 	}
@@ -223,7 +226,7 @@ static void mv_chan_activate(struct mv_xor_chan *chan)
 {
 	u32 activation;
 
-	dev_dbg(chan->device->common.dev, " activate chan.\n");
+	dev_dbg(mv_chan_to_devp(chan), " activate chan.\n");
 	activation = __raw_readl(XOR_ACTIVATION(chan));
 	activation |= 0x1;
 	__raw_writel(activation, XOR_ACTIVATION(chan));
@@ -251,7 +254,7 @@ static int mv_chan_xor_slot_count(size_t len, int src_cnt)
 static void mv_xor_free_slots(struct mv_xor_chan *mv_chan,
 			      struct mv_xor_desc_slot *slot)
 {
-	dev_dbg(mv_chan->device->common.dev, "%s %d slot %p\n",
+	dev_dbg(mv_chan_to_devp(mv_chan), "%s %d slot %p\n",
 		__func__, __LINE__, slot);
 
 	slot->slots_per_op = 0;
@@ -266,7 +269,7 @@ static void mv_xor_free_slots(struct mv_xor_chan *mv_chan,
 static void mv_xor_start_new_chain(struct mv_xor_chan *mv_chan,
 				   struct mv_xor_desc_slot *sw_desc)
 {
-	dev_dbg(mv_chan->device->common.dev, "%s %d: sw_desc %p\n",
+	dev_dbg(mv_chan_to_devp(mv_chan), "%s %d: sw_desc %p\n",
 		__func__, __LINE__, sw_desc);
 	if (sw_desc->type != mv_chan->current_type)
 		mv_set_mode(mv_chan, sw_desc->type);
@@ -284,7 +287,7 @@ static void mv_xor_start_new_chain(struct mv_xor_chan *mv_chan,
 		mv_chan_set_next_descriptor(mv_chan, sw_desc->async_tx.phys);
 	}
 	mv_chan->pending += sw_desc->slot_cnt;
-	mv_xor_issue_pending(&mv_chan->common);
+	mv_xor_issue_pending(&mv_chan->dmachan);
 }
 
 static dma_cookie_t
@@ -308,8 +311,7 @@ mv_xor_run_tx_complete_actions(struct mv_xor_desc_slot *desc,
 		 */
 		if (desc->group_head && desc->unmap_len) {
 			struct mv_xor_desc_slot *unmap = desc->group_head;
-			struct device *dev =
-				&mv_chan->device->pdev->dev;
+			struct device *dev = mv_chan_to_devp(mv_chan);
 			u32 len = unmap->unmap_len;
 			enum dma_ctrl_flags flags = desc->async_tx.flags;
 			u32 src_cnt;
@@ -353,7 +355,7 @@ mv_xor_clean_completed_slots(struct mv_xor_chan *mv_chan)
 {
 	struct mv_xor_desc_slot *iter, *_iter;
 
-	dev_dbg(mv_chan->device->common.dev, "%s %d\n", __func__, __LINE__);
+	dev_dbg(mv_chan_to_devp(mv_chan), "%s %d\n", __func__, __LINE__);
 	list_for_each_entry_safe(iter, _iter, &mv_chan->completed_slots,
 				 completed_node) {
 
@@ -369,7 +371,7 @@ static int
 mv_xor_clean_slot(struct mv_xor_desc_slot *desc,
 	struct mv_xor_chan *mv_chan)
 {
-	dev_dbg(mv_chan->device->common.dev, "%s %d: desc %p flags %d\n",
+	dev_dbg(mv_chan_to_devp(mv_chan), "%s %d: desc %p flags %d\n",
 		__func__, __LINE__, desc, desc->async_tx.flags);
 	list_del(&desc->chain_node);
 	/* the client is allowed to attach dependent operations
@@ -393,8 +395,8 @@ static void __mv_xor_slot_cleanup(struct mv_xor_chan *mv_chan)
 	u32 current_desc = mv_chan_get_current_desc(mv_chan);
 	int seen_current = 0;
 
-	dev_dbg(mv_chan->device->common.dev, "%s %d\n", __func__, __LINE__);
-	dev_dbg(mv_chan->device->common.dev, "current_desc %x\n", current_desc);
+	dev_dbg(mv_chan_to_devp(mv_chan), "%s %d\n", __func__, __LINE__);
+	dev_dbg(mv_chan_to_devp(mv_chan), "current_desc %x\n", current_desc);
 	mv_xor_clean_completed_slots(mv_chan);
 
 	/* free completed slots from the chain starting with
@@ -438,7 +440,7 @@ static void __mv_xor_slot_cleanup(struct mv_xor_chan *mv_chan)
 	}
 
 	if (cookie > 0)
-		mv_chan->common.completed_cookie = cookie;
+		mv_chan->dmachan.completed_cookie = cookie;
 }
 
 static void
@@ -547,7 +549,7 @@ mv_xor_tx_submit(struct dma_async_tx_descriptor *tx)
 	dma_cookie_t cookie;
 	int new_hw_chain = 1;
 
-	dev_dbg(mv_chan->device->common.dev,
+	dev_dbg(mv_chan_to_devp(mv_chan),
 		"%s sw_desc %p: async_tx %p\n",
 		__func__, sw_desc, &sw_desc->async_tx);
 
@@ -570,7 +572,7 @@ mv_xor_tx_submit(struct dma_async_tx_descriptor *tx)
 		if (!mv_can_chain(grp_start))
 			goto submit_done;
 
-		dev_dbg(mv_chan->device->common.dev, "Append to last desc %x\n",
+		dev_dbg(mv_chan_to_devp(mv_chan), "Append to last desc %x\n",
 			old_chain_tail->async_tx.phys);
 
 		/* fix up the hardware chain */
@@ -604,9 +606,7 @@ static int mv_xor_alloc_chan_resources(struct dma_chan *chan)
 	int idx;
 	struct mv_xor_chan *mv_chan = to_mv_xor_chan(chan);
 	struct mv_xor_desc_slot *slot = NULL;
-	struct mv_xor_platform_data *plat_data =
-		mv_chan->device->pdev->dev.platform_data;
-	int num_descs_in_pool = plat_data->pool_size/MV_XOR_SLOT_SIZE;
+	int num_descs_in_pool = MV_XOR_POOL_SIZE/MV_XOR_SLOT_SIZE;
 
 	/* Allocate descriptor slots */
 	idx = mv_chan->slots_allocated;
@@ -617,7 +617,7 @@ static int mv_xor_alloc_chan_resources(struct dma_chan *chan)
 				" %d descriptor slots", idx);
 			break;
 		}
-		hw_desc = (char *) mv_chan->device->dma_desc_pool_virt;
+		hw_desc = (char *) mv_chan->dma_desc_pool_virt;
 		slot->hw_desc = (void *) &hw_desc[idx * MV_XOR_SLOT_SIZE];
 
 		dma_async_tx_descriptor_init(&slot->async_tx, chan);
@@ -625,7 +625,7 @@ static int mv_xor_alloc_chan_resources(struct dma_chan *chan)
 		INIT_LIST_HEAD(&slot->chain_node);
 		INIT_LIST_HEAD(&slot->slot_node);
 		INIT_LIST_HEAD(&slot->tx_list);
-		hw_desc = (char *) mv_chan->device->dma_desc_pool;
+		hw_desc = (char *) mv_chan->dma_desc_pool;
 		slot->async_tx.phys =
 			(dma_addr_t) &hw_desc[idx * MV_XOR_SLOT_SIZE];
 		slot->idx = idx++;
@@ -641,7 +641,7 @@ static int mv_xor_alloc_chan_resources(struct dma_chan *chan)
 					struct mv_xor_desc_slot,
 					slot_node);
 
-	dev_dbg(mv_chan->device->common.dev,
+	dev_dbg(mv_chan_to_devp(mv_chan),
 		"allocated %d descriptor slots last_used: %p\n",
 		mv_chan->slots_allocated, mv_chan->last_used);
 
@@ -656,7 +656,7 @@ mv_xor_prep_dma_memcpy(struct dma_chan *chan, dma_addr_t dest, dma_addr_t src,
 	struct mv_xor_desc_slot *sw_desc, *grp_start;
 	int slot_cnt;
 
-	dev_dbg(mv_chan->device->common.dev,
+	dev_dbg(mv_chan_to_devp(mv_chan),
 		"%s dest: %x src %x len: %u flags: %ld\n",
 		__func__, dest, src, len, flags);
 	if (unlikely(len < MV_XOR_MIN_BYTE_COUNT))
@@ -680,7 +680,7 @@ mv_xor_prep_dma_memcpy(struct dma_chan *chan, dma_addr_t dest, dma_addr_t src,
 	}
 	spin_unlock_bh(&mv_chan->lock);
 
-	dev_dbg(mv_chan->device->common.dev,
+	dev_dbg(mv_chan_to_devp(mv_chan),
 		"%s sw_desc %p async_tx %p\n",
 		__func__, sw_desc, sw_desc ? &sw_desc->async_tx : 0);
 
@@ -695,7 +695,7 @@ mv_xor_prep_dma_memset(struct dma_chan *chan, dma_addr_t dest, int value,
 	struct mv_xor_desc_slot *sw_desc, *grp_start;
 	int slot_cnt;
 
-	dev_dbg(mv_chan->device->common.dev,
+	dev_dbg(mv_chan_to_devp(mv_chan),
 		"%s dest: %x len: %u flags: %ld\n",
 		__func__, dest, len, flags);
 	if (unlikely(len < MV_XOR_MIN_BYTE_COUNT))
@@ -718,7 +718,7 @@ mv_xor_prep_dma_memset(struct dma_chan *chan, dma_addr_t dest, int value,
 		sw_desc->unmap_len = len;
 	}
 	spin_unlock_bh(&mv_chan->lock);
-	dev_dbg(mv_chan->device->common.dev,
+	dev_dbg(mv_chan_to_devp(mv_chan),
 		"%s sw_desc %p async_tx %p \n",
 		__func__, sw_desc, &sw_desc->async_tx);
 	return sw_desc ? &sw_desc->async_tx : NULL;
@@ -737,7 +737,7 @@ mv_xor_prep_dma_xor(struct dma_chan *chan, dma_addr_t dest, dma_addr_t *src,
 
 	BUG_ON(len > MV_XOR_MAX_BYTE_COUNT);
 
-	dev_dbg(mv_chan->device->common.dev,
+	dev_dbg(mv_chan_to_devp(mv_chan),
 		"%s src_cnt: %d len: dest %x %u flags: %ld\n",
 		__func__, src_cnt, len, dest, flags);
 
@@ -758,7 +758,7 @@ mv_xor_prep_dma_xor(struct dma_chan *chan, dma_addr_t dest, dma_addr_t *src,
 			mv_desc_set_src_addr(grp_start, src_cnt, src[src_cnt]);
 	}
 	spin_unlock_bh(&mv_chan->lock);
-	dev_dbg(mv_chan->device->common.dev,
+	dev_dbg(mv_chan_to_devp(mv_chan),
 		"%s sw_desc %p async_tx %p \n",
 		__func__, sw_desc, &sw_desc->async_tx);
 	return sw_desc ? &sw_desc->async_tx : NULL;
@@ -791,12 +791,12 @@ static void mv_xor_free_chan_resources(struct dma_chan *chan)
 	}
 	mv_chan->last_used = NULL;
 
-	dev_dbg(mv_chan->device->common.dev, "%s slots_allocated %d\n",
+	dev_dbg(mv_chan_to_devp(mv_chan), "%s slots_allocated %d\n",
 		__func__, mv_chan->slots_allocated);
 	spin_unlock_bh(&mv_chan->lock);
 
 	if (in_use_descs)
-		dev_err(mv_chan->device->common.dev,
+		dev_err(mv_chan_to_devp(mv_chan),
 			"freeing %d in use descriptors!\n", in_use_descs);
 }
 
@@ -828,42 +828,42 @@ static void mv_dump_xor_regs(struct mv_xor_chan *chan)
 	u32 val;
 
 	val = __raw_readl(XOR_CONFIG(chan));
-	dev_printk(KERN_ERR, chan->device->common.dev,
-		   "config       0x%08x.\n", val);
+	dev_err(mv_chan_to_devp(chan),
+		"config       0x%08x.\n", val);
 
 	val = __raw_readl(XOR_ACTIVATION(chan));
-	dev_printk(KERN_ERR, chan->device->common.dev,
-		   "activation   0x%08x.\n", val);
+	dev_err(mv_chan_to_devp(chan),
+		"activation   0x%08x.\n", val);
 
 	val = __raw_readl(XOR_INTR_CAUSE(chan));
-	dev_printk(KERN_ERR, chan->device->common.dev,
-		   "intr cause   0x%08x.\n", val);
+	dev_err(mv_chan_to_devp(chan),
+		"intr cause   0x%08x.\n", val);
 
 	val = __raw_readl(XOR_INTR_MASK(chan));
-	dev_printk(KERN_ERR, chan->device->common.dev,
-		   "intr mask    0x%08x.\n", val);
+	dev_err(mv_chan_to_devp(chan),
+		"intr mask    0x%08x.\n", val);
 
 	val = __raw_readl(XOR_ERROR_CAUSE(chan));
-	dev_printk(KERN_ERR, chan->device->common.dev,
-		   "error cause  0x%08x.\n", val);
+	dev_err(mv_chan_to_devp(chan),
+		"error cause  0x%08x.\n", val);
 
 	val = __raw_readl(XOR_ERROR_ADDR(chan));
-	dev_printk(KERN_ERR, chan->device->common.dev,
-		   "error addr   0x%08x.\n", val);
+	dev_err(mv_chan_to_devp(chan),
+		"error addr   0x%08x.\n", val);
 }
 
 static void mv_xor_err_interrupt_handler(struct mv_xor_chan *chan,
 					 u32 intr_cause)
 {
 	if (intr_cause & (1 << 4)) {
-	     dev_dbg(chan->device->common.dev,
+	     dev_dbg(mv_chan_to_devp(chan),
 		     "ignore this error\n");
 	     return;
 	}
 
-	dev_printk(KERN_ERR, chan->device->common.dev,
-		   "error on chan %d. intr cause 0x%08x.\n",
-		   chan->idx, intr_cause);
+	dev_err(mv_chan_to_devp(chan),
+		"error on chan %d. intr cause 0x%08x.\n",
+		chan->idx, intr_cause);
 
 	mv_dump_xor_regs(chan);
 	BUG();
@@ -874,7 +874,7 @@ static irqreturn_t mv_xor_interrupt_handler(int irq, void *data)
 	struct mv_xor_chan *chan = data;
 	u32 intr_cause = mv_chan_get_intr_cause(chan);
 
-	dev_dbg(chan->device->common.dev, "intr cause %x\n", intr_cause);
+	dev_dbg(mv_chan_to_devp(chan), "intr cause %x\n", intr_cause);
 
 	if (mv_is_err_intr(intr_cause))
 		mv_xor_err_interrupt_handler(chan, intr_cause);
@@ -901,7 +901,7 @@ static void mv_xor_issue_pending(struct dma_chan *chan)
  */
 #define MV_XOR_TEST_SIZE 2000
 
-static int mv_xor_memcpy_self_test(struct mv_xor_device *device)
+static int mv_xor_memcpy_self_test(struct mv_xor_chan *mv_chan)
 {
 	int i;
 	void *src, *dest;
@@ -910,7 +910,6 @@ static int mv_xor_memcpy_self_test(struct mv_xor_device *device)
 	dma_cookie_t cookie;
 	struct dma_async_tx_descriptor *tx;
 	int err = 0;
-	struct mv_xor_chan *mv_chan;
 
 	src = kmalloc(sizeof(u8) * MV_XOR_TEST_SIZE, GFP_KERNEL);
 	if (!src)
@@ -926,10 +925,7 @@ static int mv_xor_memcpy_self_test(struct mv_xor_device *device)
 	for (i = 0; i < MV_XOR_TEST_SIZE; i++)
 		((u8 *) src)[i] = (u8)i;
 
-	/* Start copy, using first DMA channel */
-	dma_chan = container_of(device->common.channels.next,
-				struct dma_chan,
-				device_node);
+	dma_chan = &mv_chan->dmachan;
 	if (mv_xor_alloc_chan_resources(dma_chan) < 1) {
 		err = -ENODEV;
 		goto out;
@@ -950,18 +946,17 @@ static int mv_xor_memcpy_self_test(struct mv_xor_device *device)
 
 	if (mv_xor_status(dma_chan, cookie, NULL) !=
 	    DMA_SUCCESS) {
-		dev_printk(KERN_ERR, dma_chan->device->dev,
-			   "Self-test copy timed out, disabling\n");
+		dev_err(dma_chan->device->dev,
+			"Self-test copy timed out, disabling\n");
 		err = -ENODEV;
 		goto free_resources;
 	}
 
-	mv_chan = to_mv_xor_chan(dma_chan);
-	dma_sync_single_for_cpu(&mv_chan->device->pdev->dev, dest_dma,
+	dma_sync_single_for_cpu(dma_chan->device->dev, dest_dma,
 				MV_XOR_TEST_SIZE, DMA_FROM_DEVICE);
 	if (memcmp(src, dest, MV_XOR_TEST_SIZE)) {
-		dev_printk(KERN_ERR, dma_chan->device->dev,
-			   "Self-test copy failed compare, disabling\n");
+		dev_err(dma_chan->device->dev,
+			"Self-test copy failed compare, disabling\n");
 		err = -ENODEV;
 		goto free_resources;
 	}
@@ -976,7 +971,7 @@ out:
 
 #define MV_XOR_NUM_SRC_TEST 4 /* must be <= 15 */
 static int
-mv_xor_xor_self_test(struct mv_xor_device *device)
+mv_xor_xor_self_test(struct mv_xor_chan *mv_chan)
 {
 	int i, src_idx;
 	struct page *dest;
@@ -989,7 +984,6 @@ mv_xor_xor_self_test(struct mv_xor_device *device)
 	u8 cmp_byte = 0;
 	u32 cmp_word;
 	int err = 0;
-	struct mv_xor_chan *mv_chan;
 
 	for (src_idx = 0; src_idx < MV_XOR_NUM_SRC_TEST; src_idx++) {
 		xor_srcs[src_idx] = alloc_page(GFP_KERNEL);
@@ -1022,9 +1016,7 @@ mv_xor_xor_self_test(struct mv_xor_device *device)
 
 	memset(page_address(dest), 0, PAGE_SIZE);
 
-	dma_chan = container_of(device->common.channels.next,
-				struct dma_chan,
-				device_node);
+	dma_chan = &mv_chan->dmachan;
 	if (mv_xor_alloc_chan_resources(dma_chan) < 1) {
 		err = -ENODEV;
 		goto out;
@@ -1048,22 +1040,21 @@ mv_xor_xor_self_test(struct mv_xor_device *device)
 
 	if (mv_xor_status(dma_chan, cookie, NULL) !=
 	    DMA_SUCCESS) {
-		dev_printk(KERN_ERR, dma_chan->device->dev,
-			   "Self-test xor timed out, disabling\n");
+		dev_err(dma_chan->device->dev,
+			"Self-test xor timed out, disabling\n");
 		err = -ENODEV;
 		goto free_resources;
 	}
 
-	mv_chan = to_mv_xor_chan(dma_chan);
-	dma_sync_single_for_cpu(&mv_chan->device->pdev->dev, dest_dma,
+	dma_sync_single_for_cpu(dma_chan->device->dev, dest_dma,
 				PAGE_SIZE, DMA_FROM_DEVICE);
 	for (i = 0; i < (PAGE_SIZE / sizeof(u32)); i++) {
 		u32 *ptr = page_address(dest);
 		if (ptr[i] != cmp_word) {
-			dev_printk(KERN_ERR, dma_chan->device->dev,
-				   "Self-test xor failed compare, disabling."
-				   " index %d, data %x, expected %x\n", i,
-				   ptr[i], cmp_word);
+			dev_err(dma_chan->device->dev,
+				"Self-test xor failed compare, disabling."
+				" index %d, data %x, expected %x\n", i,
+				ptr[i], cmp_word);
 			err = -ENODEV;
 			goto free_resources;
 		}
@@ -1079,62 +1070,66 @@ out:
 	return err;
 }
 
-static int __devexit mv_xor_remove(struct platform_device *dev)
+/* This driver does not implement any of the optional DMA operations. */
+static int
+mv_xor_control(struct dma_chan *chan, enum dma_ctrl_cmd cmd,
+	       unsigned long arg)
+{
+	return -ENOSYS;
+}
+
+static int mv_xor_channel_remove(struct mv_xor_chan *mv_chan)
 {
-	struct mv_xor_device *device = platform_get_drvdata(dev);
 	struct dma_chan *chan, *_chan;
-	struct mv_xor_chan *mv_chan;
-	struct mv_xor_platform_data *plat_data = dev->dev.platform_data;
+	struct device *dev = mv_chan->dmadev.dev;
 
-	dma_async_device_unregister(&device->common);
+	dma_async_device_unregister(&mv_chan->dmadev);
 
-	dma_free_coherent(&dev->dev, plat_data->pool_size,
-			device->dma_desc_pool_virt, device->dma_desc_pool);
+	dma_free_coherent(dev, MV_XOR_POOL_SIZE,
+			  mv_chan->dma_desc_pool_virt, mv_chan->dma_desc_pool);
 
-	list_for_each_entry_safe(chan, _chan, &device->common.channels,
-				device_node) {
-		mv_chan = to_mv_xor_chan(chan);
+	list_for_each_entry_safe(chan, _chan, &mv_chan->dmadev.channels,
+				 device_node) {
 		list_del(&chan->device_node);
 	}
 
+	free_irq(mv_chan->irq, mv_chan);
+
 	return 0;
 }
 
-static int mv_xor_probe(struct platform_device *pdev)
+static struct mv_xor_chan *
+mv_xor_channel_add(struct mv_xor_device *xordev,
+		   struct platform_device *pdev,
+		   int idx, dma_cap_mask_t cap_mask, int irq)
 {
 	int ret = 0;
-	int irq;
-	struct mv_xor_device *adev;
 	struct mv_xor_chan *mv_chan;
 	struct dma_device *dma_dev;
-	struct mv_xor_platform_data *plat_data = pdev->dev.platform_data;
 
+	mv_chan = devm_kzalloc(&pdev->dev, sizeof(*mv_chan), GFP_KERNEL);
+	if (!mv_chan) {
+		ret = -ENOMEM;
+		goto err_free_dma;
+	}
 
-	adev = devm_kzalloc(&pdev->dev, sizeof(*adev), GFP_KERNEL);
-	if (!adev)
-		return -ENOMEM;
+	mv_chan->idx = idx;
+	mv_chan->irq = irq;
 
-	dma_dev = &adev->common;
+	dma_dev = &mv_chan->dmadev;
 
 	/* allocate coherent memory for hardware descriptors
 	 * note: writecombine gives slightly better performance, but
 	 * requires that we explicitly flush the writes
 	 */
-	adev->dma_desc_pool_virt = dma_alloc_writecombine(&pdev->dev,
-							  plat_data->pool_size,
-							  &adev->dma_desc_pool,
-							  GFP_KERNEL);
-	if (!adev->dma_desc_pool_virt)
-		return -ENOMEM;
-
-	adev->id = plat_data->hw_id;
+	mv_chan->dma_desc_pool_virt =
+	  dma_alloc_writecombine(&pdev->dev, MV_XOR_POOL_SIZE,
+				 &mv_chan->dma_desc_pool, GFP_KERNEL);
+	if (!mv_chan->dma_desc_pool_virt)
+		return ERR_PTR(-ENOMEM);
 
 	/* discover transaction capabilites from the platform data */
-	dma_dev->cap_mask = plat_data->cap_mask;
-	adev->pdev = pdev;
-	platform_set_drvdata(pdev, adev);
-
-	adev->shared = platform_get_drvdata(plat_data->shared);
+	dma_dev->cap_mask = cap_mask;
 
 	INIT_LIST_HEAD(&dma_dev->channels);
 
@@ -1143,6 +1138,7 @@ static int mv_xor_probe(struct platform_device *pdev)
 	dma_dev->device_free_chan_resources = mv_xor_free_chan_resources;
 	dma_dev->device_tx_status = mv_xor_status;
 	dma_dev->device_issue_pending = mv_xor_issue_pending;
+	dma_dev->device_control = mv_xor_control;
 	dma_dev->dev = &pdev->dev;
 
 	/* set prep routines based on capability */
@@ -1155,15 +1151,7 @@ static int mv_xor_probe(struct platform_device *pdev)
 		dma_dev->device_prep_dma_xor = mv_xor_prep_dma_xor;
 	}
 
-	mv_chan = devm_kzalloc(&pdev->dev, sizeof(*mv_chan), GFP_KERNEL);
-	if (!mv_chan) {
-		ret = -ENOMEM;
-		goto err_free_dma;
-	}
-	mv_chan->device = adev;
-	mv_chan->idx = plat_data->hw_id;
-	mv_chan->mmr_base = adev->shared->xor_base;
-
+	mv_chan->mmr_base = xordev->xor_base;
 	if (!mv_chan->mmr_base) {
 		ret = -ENOMEM;
 		goto err_free_dma;
@@ -1174,14 +1162,8 @@ static int mv_xor_probe(struct platform_device *pdev)
 	/* clear errors before enabling interrupts */
 	mv_xor_device_clear_err_status(mv_chan);
 
-	irq = platform_get_irq(pdev, 0);
-	if (irq < 0) {
-		ret = irq;
-		goto err_free_dma;
-	}
-	ret = devm_request_irq(&pdev->dev, irq,
-			       mv_xor_interrupt_handler,
-			       0, dev_name(&pdev->dev), mv_chan);
+	ret = request_irq(mv_chan->irq, mv_xor_interrupt_handler,
+			  0, dev_name(&pdev->dev), mv_chan);
 	if (ret)
 		goto err_free_dma;
 
@@ -1193,26 +1175,26 @@ static int mv_xor_probe(struct platform_device *pdev)
 	INIT_LIST_HEAD(&mv_chan->chain);
 	INIT_LIST_HEAD(&mv_chan->completed_slots);
 	INIT_LIST_HEAD(&mv_chan->all_slots);
-	mv_chan->common.device = dma_dev;
-	dma_cookie_init(&mv_chan->common);
+	mv_chan->dmachan.device = dma_dev;
+	dma_cookie_init(&mv_chan->dmachan);
 
-	list_add_tail(&mv_chan->common.device_node, &dma_dev->channels);
+	list_add_tail(&mv_chan->dmachan.device_node, &dma_dev->channels);
 
 	if (dma_has_cap(DMA_MEMCPY, dma_dev->cap_mask)) {
-		ret = mv_xor_memcpy_self_test(adev);
+		ret = mv_xor_memcpy_self_test(mv_chan);
 		dev_dbg(&pdev->dev, "memcpy self test returned %d\n", ret);
 		if (ret)
-			goto err_free_dma;
+			goto err_free_irq;
 	}
 
 	if (dma_has_cap(DMA_XOR, dma_dev->cap_mask)) {
-		ret = mv_xor_xor_self_test(adev);
+		ret = mv_xor_xor_self_test(mv_chan);
 		dev_dbg(&pdev->dev, "xor self test returned %d\n", ret);
 		if (ret)
-			goto err_free_dma;
+			goto err_free_irq;
 	}
 
-	dev_printk(KERN_INFO, &pdev->dev, "Marvell XOR: "
+	dev_info(&pdev->dev, "Marvell XOR: "
 	  "( %s%s%s%s)\n",
 	  dma_has_cap(DMA_XOR, dma_dev->cap_mask) ? "xor " : "",
 	  dma_has_cap(DMA_MEMSET, dma_dev->cap_mask)  ? "fill " : "",
@@ -1220,20 +1202,21 @@ static int mv_xor_probe(struct platform_device *pdev)
 	  dma_has_cap(DMA_INTERRUPT, dma_dev->cap_mask) ? "intr " : "");
 
 	dma_async_device_register(dma_dev);
-	goto out;
+	return mv_chan;
 
+err_free_irq:
+	free_irq(mv_chan->irq, mv_chan);
  err_free_dma:
-	dma_free_coherent(&adev->pdev->dev, plat_data->pool_size,
-			adev->dma_desc_pool_virt, adev->dma_desc_pool);
- out:
-	return ret;
+	dma_free_coherent(&pdev->dev, MV_XOR_POOL_SIZE,
+			  mv_chan->dma_desc_pool_virt, mv_chan->dma_desc_pool);
+	return ERR_PTR(ret);
 }
 
 static void
-mv_xor_conf_mbus_windows(struct mv_xor_shared_private *msp,
+mv_xor_conf_mbus_windows(struct mv_xor_device *xordev,
 			 const struct mbus_dram_target_info *dram)
 {
-	void __iomem *base = msp->xor_base;
+	void __iomem *base = xordev->xor_base;
 	u32 win_enable = 0;
 	int i;
 
@@ -1258,99 +1241,179 @@ mv_xor_conf_mbus_windows(struct mv_xor_shared_private *msp,
 
 	writel(win_enable, base + WINDOW_BAR_ENABLE(0));
 	writel(win_enable, base + WINDOW_BAR_ENABLE(1));
+	writel(0, base + WINDOW_OVERRIDE_CTRL(0));
+	writel(0, base + WINDOW_OVERRIDE_CTRL(1));
 }
 
-static struct platform_driver mv_xor_driver = {
-	.probe		= mv_xor_probe,
-	.remove		= mv_xor_remove,
-	.driver		= {
-		.owner	= THIS_MODULE,
-		.name	= MV_XOR_NAME,
-	},
-};
-
-static int mv_xor_shared_probe(struct platform_device *pdev)
+static int mv_xor_probe(struct platform_device *pdev)
 {
 	const struct mbus_dram_target_info *dram;
-	struct mv_xor_shared_private *msp;
+	struct mv_xor_device *xordev;
+	struct mv_xor_platform_data *pdata = pdev->dev.platform_data;
 	struct resource *res;
+	int i, ret;
 
-	dev_printk(KERN_NOTICE, &pdev->dev, "Marvell shared XOR driver\n");
+	dev_notice(&pdev->dev, "Marvell XOR driver\n");
 
-	msp = devm_kzalloc(&pdev->dev, sizeof(*msp), GFP_KERNEL);
-	if (!msp)
+	xordev = devm_kzalloc(&pdev->dev, sizeof(*xordev), GFP_KERNEL);
+	if (!xordev)
 		return -ENOMEM;
 
 	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 	if (!res)
 		return -ENODEV;
 
-	msp->xor_base = devm_ioremap(&pdev->dev, res->start,
-				     resource_size(res));
-	if (!msp->xor_base)
+	xordev->xor_base = devm_ioremap(&pdev->dev, res->start,
+					resource_size(res));
+	if (!xordev->xor_base)
 		return -EBUSY;
 
 	res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
 	if (!res)
 		return -ENODEV;
 
-	msp->xor_high_base = devm_ioremap(&pdev->dev, res->start,
-					  resource_size(res));
-	if (!msp->xor_high_base)
+	xordev->xor_high_base = devm_ioremap(&pdev->dev, res->start,
+					     resource_size(res));
+	if (!xordev->xor_high_base)
 		return -EBUSY;
 
-	platform_set_drvdata(pdev, msp);
+	platform_set_drvdata(pdev, xordev);
 
 	/*
 	 * (Re-)program MBUS remapping windows if we are asked to.
 	 */
 	dram = mv_mbus_dram_info();
 	if (dram)
-		mv_xor_conf_mbus_windows(msp, dram);
+		mv_xor_conf_mbus_windows(xordev, dram);
 
 	/* Not all platforms can gate the clock, so it is not
 	 * an error if the clock does not exists.
 	 */
-	msp->clk = clk_get(&pdev->dev, NULL);
-	if (!IS_ERR(msp->clk))
-		clk_prepare_enable(msp->clk);
+	xordev->clk = clk_get(&pdev->dev, NULL);
+	if (!IS_ERR(xordev->clk))
+		clk_prepare_enable(xordev->clk);
+
+	if (pdev->dev.of_node) {
+		struct device_node *np;
+		int i = 0;
+
+		for_each_child_of_node(pdev->dev.of_node, np) {
+			dma_cap_mask_t cap_mask;
+			int irq;
+
+			dma_cap_zero(cap_mask);
+			if (of_property_read_bool(np, "dmacap,memcpy"))
+				dma_cap_set(DMA_MEMCPY, cap_mask);
+			if (of_property_read_bool(np, "dmacap,xor"))
+				dma_cap_set(DMA_XOR, cap_mask);
+			if (of_property_read_bool(np, "dmacap,memset"))
+				dma_cap_set(DMA_MEMSET, cap_mask);
+			if (of_property_read_bool(np, "dmacap,interrupt"))
+				dma_cap_set(DMA_INTERRUPT, cap_mask);
+
+			irq = irq_of_parse_and_map(np, 0);
+			if (!irq) {
+				ret = -ENODEV;
+				goto err_channel_add;
+			}
+
+			xordev->channels[i] =
+				mv_xor_channel_add(xordev, pdev, i,
+						   cap_mask, irq);
+			if (IS_ERR(xordev->channels[i])) {
+				ret = PTR_ERR(xordev->channels[i]);
+				xordev->channels[i] = NULL;
+				irq_dispose_mapping(irq);
+				goto err_channel_add;
+			}
+
+			i++;
+		}
+	} else if (pdata && pdata->channels) {
+		for (i = 0; i < MV_XOR_MAX_CHANNELS; i++) {
+			struct mv_xor_channel_data *cd;
+			int irq;
+
+			cd = &pdata->channels[i];
+			if (!cd) {
+				ret = -ENODEV;
+				goto err_channel_add;
+			}
+
+			irq = platform_get_irq(pdev, i);
+			if (irq < 0) {
+				ret = irq;
+				goto err_channel_add;
+			}
+
+			xordev->channels[i] =
+				mv_xor_channel_add(xordev, pdev, i,
+						   cd->cap_mask, irq);
+			if (IS_ERR(xordev->channels[i])) {
+				ret = PTR_ERR(xordev->channels[i]);
+				goto err_channel_add;
+			}
+		}
+	}
 
 	return 0;
+
+err_channel_add:
+	for (i = 0; i < MV_XOR_MAX_CHANNELS; i++)
+		if (xordev->channels[i]) {
+			mv_xor_channel_remove(xordev->channels[i]);
+			if (pdev->dev.of_node)
+				irq_dispose_mapping(xordev->channels[i]->irq);
+		}
+
+	if (!IS_ERR(xordev->clk)) {
+		clk_disable_unprepare(xordev->clk);
+		clk_put(xordev->clk);
+	}
+
+	return ret;
 }
 
-static int mv_xor_shared_remove(struct platform_device *pdev)
+static int mv_xor_remove(struct platform_device *pdev)
 {
-	struct mv_xor_shared_private *msp = platform_get_drvdata(pdev);
+	struct mv_xor_device *xordev = platform_get_drvdata(pdev);
+	int i;
+
+	for (i = 0; i < MV_XOR_MAX_CHANNELS; i++) {
+		if (xordev->channels[i])
+			mv_xor_channel_remove(xordev->channels[i]);
+	}
 
-	if (!IS_ERR(msp->clk)) {
-		clk_disable_unprepare(msp->clk);
-		clk_put(msp->clk);
+	if (!IS_ERR(xordev->clk)) {
+		clk_disable_unprepare(xordev->clk);
+		clk_put(xordev->clk);
 	}
 
 	return 0;
 }
 
-static struct platform_driver mv_xor_shared_driver = {
-	.probe		= mv_xor_shared_probe,
-	.remove		= mv_xor_shared_remove,
+#ifdef CONFIG_OF
+static struct of_device_id mv_xor_dt_ids[] = {
+       { .compatible = "marvell,orion-xor", },
+       {},
+};
+MODULE_DEVICE_TABLE(of, mv_xor_dt_ids);
+#endif
+
+static struct platform_driver mv_xor_driver = {
+	.probe		= mv_xor_probe,
+	.remove		= mv_xor_remove,
 	.driver		= {
-		.owner	= THIS_MODULE,
-		.name	= MV_XOR_SHARED_NAME,
+		.owner	        = THIS_MODULE,
+		.name	        = MV_XOR_NAME,
+		.of_match_table = of_match_ptr(mv_xor_dt_ids),
 	},
 };
 
 
 static int __init mv_xor_init(void)
 {
-	int rc;
-
-	rc = platform_driver_register(&mv_xor_shared_driver);
-	if (!rc) {
-		rc = platform_driver_register(&mv_xor_driver);
-		if (rc)
-			platform_driver_unregister(&mv_xor_shared_driver);
-	}
-	return rc;
+	return platform_driver_register(&mv_xor_driver);
 }
 module_init(mv_xor_init);
 
@@ -1359,7 +1422,6 @@ module_init(mv_xor_init);
 static void __exit mv_xor_exit(void)
 {
 	platform_driver_unregister(&mv_xor_driver);
-	platform_driver_unregister(&mv_xor_shared_driver);
 	return;
 }
 
diff --git a/drivers/dma/mv_xor.h b/drivers/dma/mv_xor.h
index a5b422f5a8ab..c632a4761fcf 100644
--- a/drivers/dma/mv_xor.h
+++ b/drivers/dma/mv_xor.h
@@ -24,8 +24,10 @@
 #include <linux/interrupt.h>
 
 #define USE_TIMER
+#define MV_XOR_POOL_SIZE		PAGE_SIZE
 #define MV_XOR_SLOT_SIZE		64
 #define MV_XOR_THRESHOLD		1
+#define MV_XOR_MAX_CHANNELS             2
 
 #define XOR_OPERATION_MODE_XOR		0
 #define XOR_OPERATION_MODE_MEMCPY	2
@@ -51,29 +53,13 @@
 #define WINDOW_SIZE(w)		(0x270 + ((w) << 2))
 #define WINDOW_REMAP_HIGH(w)	(0x290 + ((w) << 2))
 #define WINDOW_BAR_ENABLE(chan)	(0x240 + ((chan) << 2))
+#define WINDOW_OVERRIDE_CTRL(chan)	(0x2A0 + ((chan) << 2))
 
-struct mv_xor_shared_private {
-	void __iomem	*xor_base;
-	void __iomem	*xor_high_base;
-	struct clk	*clk;
-};
-
-
-/**
- * struct mv_xor_device - internal representation of a XOR device
- * @pdev: Platform device
- * @id: HW XOR Device selector
- * @dma_desc_pool: base of DMA descriptor region (DMA address)
- * @dma_desc_pool_virt: base of DMA descriptor region (CPU address)
- * @common: embedded struct dma_device
- */
 struct mv_xor_device {
-	struct platform_device		*pdev;
-	int				id;
-	dma_addr_t			dma_desc_pool;
-	void				*dma_desc_pool_virt;
-	struct dma_device		common;
-	struct mv_xor_shared_private	*shared;
+	void __iomem	     *xor_base;
+	void __iomem	     *xor_high_base;
+	struct clk	     *clk;
+	struct mv_xor_chan   *channels[MV_XOR_MAX_CHANNELS];
 };
 
 /**
@@ -96,11 +82,15 @@ struct mv_xor_chan {
 	spinlock_t		lock; /* protects the descriptor slot pool */
 	void __iomem		*mmr_base;
 	unsigned int		idx;
+	int                     irq;
 	enum dma_transaction_type	current_type;
 	struct list_head	chain;
 	struct list_head	completed_slots;
-	struct mv_xor_device	*device;
-	struct dma_chan		common;
+	dma_addr_t		dma_desc_pool;
+	void			*dma_desc_pool_virt;
+	size_t                  pool_size;
+	struct dma_device	dmadev;
+	struct dma_chan		dmachan;
 	struct mv_xor_desc_slot	*last_used;
 	struct list_head	all_slots;
 	int			slots_allocated;
diff --git a/drivers/dma/pch_dma.c b/drivers/dma/pch_dma.c
index eca1c4ddf039..3f2617255ef2 100644
--- a/drivers/dma/pch_dma.c
+++ b/drivers/dma/pch_dma.c
@@ -961,7 +961,7 @@ err_free_mem:
 	return err;
 }
 
-static void __devexit pch_dma_remove(struct pci_dev *pdev)
+static void pch_dma_remove(struct pci_dev *pdev)
 {
 	struct pch_dma *pd = pci_get_drvdata(pdev);
 	struct pch_dma_chan *pd_chan;
diff --git a/drivers/dma/pl330.c b/drivers/dma/pl330.c
index 95555f37ea6d..80680eee0171 100644
--- a/drivers/dma/pl330.c
+++ b/drivers/dma/pl330.c
@@ -2988,7 +2988,7 @@ probe_err1:
 	return ret;
 }
 
-static int __devexit pl330_remove(struct amba_device *adev)
+static int pl330_remove(struct amba_device *adev)
 {
 	struct dma_pl330_dmac *pdmac = amba_get_drvdata(adev);
 	struct dma_pl330_chan *pch, *_p;
diff --git a/drivers/dma/ppc4xx/adma.c b/drivers/dma/ppc4xx/adma.c
index b94afc339e7f..5d3d95569a1e 100644
--- a/drivers/dma/ppc4xx/adma.c
+++ b/drivers/dma/ppc4xx/adma.c
@@ -4592,7 +4592,7 @@ out:
 /**
  * ppc440spe_adma_remove - remove the asynch device
  */
-static int __devexit ppc440spe_adma_remove(struct platform_device *ofdev)
+static int ppc440spe_adma_remove(struct platform_device *ofdev)
 {
 	struct ppc440spe_adma_device *adev = dev_get_drvdata(&ofdev->dev);
 	struct device_node *np = ofdev->dev.of_node;
@@ -4905,7 +4905,7 @@ out_free:
 	return ret;
 }
 
-static const struct of_device_id ppc440spe_adma_of_match[] __devinitconst = {
+static const struct of_device_id ppc440spe_adma_of_match[] = {
 	{ .compatible	= "ibm,dma-440spe", },
 	{ .compatible	= "amcc,xor-accelerator", },
 	{},
diff --git a/drivers/dma/sa11x0-dma.c b/drivers/dma/sa11x0-dma.c
index 2ad628df8223..461a91ab70bb 100644
--- a/drivers/dma/sa11x0-dma.c
+++ b/drivers/dma/sa11x0-dma.c
@@ -967,7 +967,7 @@ static int sa11x0_dma_probe(struct platform_device *pdev)
 	return ret;
 }
 
-static int __devexit sa11x0_dma_remove(struct platform_device *pdev)
+static int sa11x0_dma_remove(struct platform_device *pdev)
 {
 	struct sa11x0_dma_dev *d = platform_get_drvdata(pdev);
 	unsigned pch;
diff --git a/drivers/dma/sh/shdma.c b/drivers/dma/sh/shdma.c
index 8201bb4e0cd7..3315e4be9b85 100644
--- a/drivers/dma/sh/shdma.c
+++ b/drivers/dma/sh/shdma.c
@@ -880,7 +880,7 @@ ermrdmars:
 	return err;
 }
 
-static int __devexit sh_dmae_remove(struct platform_device *pdev)
+static int sh_dmae_remove(struct platform_device *pdev)
 {
 	struct sh_dmae_device *shdev = platform_get_drvdata(pdev);
 	struct dma_device *dma_dev = &shdev->shdma_dev.dma_dev;
diff --git a/drivers/dma/sirf-dma.c b/drivers/dma/sirf-dma.c
index c3de6edb9651..94674a96c646 100644
--- a/drivers/dma/sirf-dma.c
+++ b/drivers/dma/sirf-dma.c
@@ -655,7 +655,7 @@ irq_dispose:
 	return ret;
 }
 
-static int __devexit sirfsoc_dma_remove(struct platform_device *op)
+static int sirfsoc_dma_remove(struct platform_device *op)
 {
 	struct device *dev = &op->dev;
 	struct sirfsoc_dma *sdma = dev_get_drvdata(dev);
diff --git a/drivers/dma/tegra20-apb-dma.c b/drivers/dma/tegra20-apb-dma.c
index efdfffa13349..3cad856fe67f 100644
--- a/drivers/dma/tegra20-apb-dma.c
+++ b/drivers/dma/tegra20-apb-dma.c
@@ -266,6 +266,7 @@ static struct tegra_dma_desc *tegra_dma_desc_get(
 		if (async_tx_test_ack(&dma_desc->txd)) {
 			list_del(&dma_desc->node);
 			spin_unlock_irqrestore(&tdc->lock, flags);
+			dma_desc->txd.flags = 0;
 			return dma_desc;
 		}
 	}
@@ -1050,7 +1051,9 @@ struct dma_async_tx_descriptor *tegra_dma_prep_dma_cyclic(
 					TEGRA_APBDMA_AHBSEQ_WRAP_SHIFT;
 	ahb_seq |= TEGRA_APBDMA_AHBSEQ_BUS_WIDTH_32;
 
-	csr |= TEGRA_APBDMA_CSR_FLOW | TEGRA_APBDMA_CSR_IE_EOC;
+	csr |= TEGRA_APBDMA_CSR_FLOW;
+	if (flags & DMA_PREP_INTERRUPT)
+		csr |= TEGRA_APBDMA_CSR_IE_EOC;
 	csr |= tdc->dma_sconfig.slave_id << TEGRA_APBDMA_CSR_REQ_SEL_SHIFT;
 
 	apb_seq |= TEGRA_APBDMA_APBSEQ_WRAP_WORD_1;
@@ -1095,7 +1098,8 @@ struct dma_async_tx_descriptor *tegra_dma_prep_dma_cyclic(
 		mem += len;
 	}
 	sg_req->last_sg = true;
-	dma_desc->txd.flags = 0;
+	if (flags & DMA_CTRL_ACK)
+		dma_desc->txd.flags = DMA_CTRL_ACK;
 
 	/*
 	 * Make sure that mode should not be conflicting with currently
@@ -1184,7 +1188,7 @@ static const struct tegra_dma_chip_data tegra30_dma_chip_data = {
 	.max_dma_count		= 1024UL * 64,
 };
 
-static const struct of_device_id tegra_dma_of_match[] __devinitconst = {
+static const struct of_device_id tegra_dma_of_match[] = {
 	{
 		.compatible = "nvidia,tegra30-apbdma",
 		.data = &tegra30_dma_chip_data,
@@ -1360,7 +1364,7 @@ err_pm_disable:
 	return ret;
 }
 
-static int __devexit tegra_dma_remove(struct platform_device *pdev)
+static int tegra_dma_remove(struct platform_device *pdev)
 {
 	struct tegra_dma *tdma = platform_get_drvdata(pdev);
 	int i;
@@ -1403,7 +1407,7 @@ static int tegra_dma_runtime_resume(struct device *dev)
 	return 0;
 }
 
-static const struct dev_pm_ops tegra_dma_dev_pm_ops __devinitconst = {
+static const struct dev_pm_ops tegra_dma_dev_pm_ops = {
 #ifdef CONFIG_PM_RUNTIME
 	.runtime_suspend = tegra_dma_runtime_suspend,
 	.runtime_resume = tegra_dma_runtime_resume,
diff --git a/drivers/dma/timb_dma.c b/drivers/dma/timb_dma.c
index 98cf51e1544c..952f823901a6 100644
--- a/drivers/dma/timb_dma.c
+++ b/drivers/dma/timb_dma.c
@@ -798,7 +798,7 @@ err_release_region:
 
 }
 
-static int __devexit td_remove(struct platform_device *pdev)
+static int td_remove(struct platform_device *pdev)
 {
 	struct timb_dma *td = platform_get_drvdata(pdev);
 	struct resource *iomem = platform_get_resource(pdev, IORESOURCE_MEM, 0);