5 files changed, 28 insertions, 14 deletions

diff --git a/drivers/dma/dw_dmac.c b/drivers/dma/dw_dmac.c
index 9c25c7d099e4..b15c32ca0efa 100644
--- a/drivers/dma/dw_dmac.c
+++ b/drivers/dma/dw_dmac.c
@@ -304,6 +304,11 @@ static void dwc_scan_descriptors(struct dw_dma *dw, struct dw_dma_chan *dwc)
         dev_vdbg(chan2dev(&dwc->chan), "scan_descriptors: llp=0x%x\n", llp);
 
         list_for_each_entry_safe(desc, _desc, &dwc->active_list, desc_node) {
+                /* check first descriptors addr */
+                if (desc->txd.phys == llp)
+                        return;
+
+                /* check first descriptors llp */
                 if (desc->lli.llp == llp)
                         /* This one is currently in progress */
                         return;
diff --git a/drivers/dma/intel_mid_dma.c b/drivers/dma/intel_mid_dma.c
index 798f46a4590d..f153adfcaceb 100644
--- a/drivers/dma/intel_mid_dma.c
+++ b/drivers/dma/intel_mid_dma.c
@@ -1292,8 +1292,7 @@ static int __devinit intel_mid_dma_probe(struct pci_dev *pdev,
         if (err)
                 goto err_dma;
 
-        pm_runtime_set_active(&pdev->dev);
-        pm_runtime_enable(&pdev->dev);
+        pm_runtime_put_noidle(&pdev->dev);
         pm_runtime_allow(&pdev->dev);
         return 0;
 
@@ -1322,6 +1321,9 @@ err_enable_device:
 static void __devexit intel_mid_dma_remove(struct pci_dev *pdev)
 {
         struct middma_device *device = pci_get_drvdata(pdev);
+
+        pm_runtime_get_noresume(&pdev->dev);
+        pm_runtime_forbid(&pdev->dev);
         middma_shutdown(pdev);
         pci_dev_put(pdev);
         kfree(device);
@@ -1385,13 +1387,20 @@ int dma_resume(struct pci_dev *pci)
 static int dma_runtime_suspend(struct device *dev)
 {
         struct pci_dev *pci_dev = to_pci_dev(dev);
-        return dma_suspend(pci_dev, PMSG_SUSPEND);
+        struct middma_device *device = pci_get_drvdata(pci_dev);
+
+        device->state = SUSPENDED;
+        return 0;
 }
 
 static int dma_runtime_resume(struct device *dev)
 {
         struct pci_dev *pci_dev = to_pci_dev(dev);
-        return dma_resume(pci_dev);
+        struct middma_device *device = pci_get_drvdata(pci_dev);
+
+        device->state = RUNNING;
+        iowrite32(REG_BIT0, device->dma_base + DMA_CFG);
+        return 0;
 }
 
 static int dma_runtime_idle(struct device *dev)
diff --git a/drivers/dma/iop-adma.c b/drivers/dma/iop-adma.c
index c6b01f535b29..e03f811a83dd 100644
--- a/drivers/dma/iop-adma.c
+++ b/drivers/dma/iop-adma.c
@@ -619,7 +619,7 @@ iop_adma_prep_dma_memcpy(struct dma_chan *chan, dma_addr_t dma_dest,
 
         if (unlikely(!len))
                 return NULL;
-        BUG_ON(unlikely(len > IOP_ADMA_MAX_BYTE_COUNT));
+        BUG_ON(len > IOP_ADMA_MAX_BYTE_COUNT);
 
         dev_dbg(iop_chan->device->common.dev, "%s len: %u\n",
                 __func__, len);
@@ -652,7 +652,7 @@ iop_adma_prep_dma_memset(struct dma_chan *chan, dma_addr_t dma_dest,
 
         if (unlikely(!len))
                 return NULL;
-        BUG_ON(unlikely(len > IOP_ADMA_MAX_BYTE_COUNT));
+        BUG_ON(len > IOP_ADMA_MAX_BYTE_COUNT);
 
         dev_dbg(iop_chan->device->common.dev, "%s len: %u\n",
                 __func__, len);
@@ -686,7 +686,7 @@ iop_adma_prep_dma_xor(struct dma_chan *chan, dma_addr_t dma_dest,
 
         if (unlikely(!len))
                 return NULL;
-        BUG_ON(unlikely(len > IOP_ADMA_XOR_MAX_BYTE_COUNT));
+        BUG_ON(len > IOP_ADMA_XOR_MAX_BYTE_COUNT);
 
         dev_dbg(iop_chan->device->common.dev,
                 "%s src_cnt: %d len: %u flags: %lx\n",
diff --git a/drivers/dma/mv_xor.c b/drivers/dma/mv_xor.c
index a25f5f61e0e0..954e334e01bb 100644
--- a/drivers/dma/mv_xor.c
+++ b/drivers/dma/mv_xor.c
@@ -671,7 +671,7 @@ mv_xor_prep_dma_memcpy(struct dma_chan *chan, dma_addr_t dest, dma_addr_t src,
         if (unlikely(len < MV_XOR_MIN_BYTE_COUNT))
                 return NULL;
 
-        BUG_ON(unlikely(len > MV_XOR_MAX_BYTE_COUNT));
+        BUG_ON(len > MV_XOR_MAX_BYTE_COUNT);
 
         spin_lock_bh(&mv_chan->lock);
         slot_cnt = mv_chan_memcpy_slot_count(len);
@@ -710,7 +710,7 @@ mv_xor_prep_dma_memset(struct dma_chan *chan, dma_addr_t dest, int value,
         if (unlikely(len < MV_XOR_MIN_BYTE_COUNT))
                 return NULL;
 
-        BUG_ON(unlikely(len > MV_XOR_MAX_BYTE_COUNT));
+        BUG_ON(len > MV_XOR_MAX_BYTE_COUNT);
 
         spin_lock_bh(&mv_chan->lock);
         slot_cnt = mv_chan_memset_slot_count(len);
@@ -744,7 +744,7 @@ mv_xor_prep_dma_xor(struct dma_chan *chan, dma_addr_t dest, dma_addr_t *src,
         if (unlikely(len < MV_XOR_MIN_BYTE_COUNT))
                 return NULL;
 
-        BUG_ON(unlikely(len > MV_XOR_MAX_BYTE_COUNT));
+        BUG_ON(len > MV_XOR_MAX_BYTE_COUNT);
 
         dev_dbg(mv_chan->device->common.dev,
                 "%s src_cnt: %d len: dest %x %u flags: %ld\n",
diff --git a/drivers/dma/ppc4xx/adma.c b/drivers/dma/ppc4xx/adma.c
index 3b0247e74cc4..fc457a7e8832 100644
--- a/drivers/dma/ppc4xx/adma.c
+++ b/drivers/dma/ppc4xx/adma.c
@@ -2313,7 +2313,7 @@ static struct dma_async_tx_descriptor *ppc440spe_adma_prep_dma_memcpy(
         if (unlikely(!len))
                 return NULL;
 
-        BUG_ON(unlikely(len > PPC440SPE_ADMA_DMA_MAX_BYTE_COUNT));
+        BUG_ON(len > PPC440SPE_ADMA_DMA_MAX_BYTE_COUNT);
 
         spin_lock_bh(&ppc440spe_chan->lock);
 
@@ -2354,7 +2354,7 @@ static struct dma_async_tx_descriptor *ppc440spe_adma_prep_dma_memset(
         if (unlikely(!len))
                 return NULL;
 
-        BUG_ON(unlikely(len > PPC440SPE_ADMA_DMA_MAX_BYTE_COUNT));
+        BUG_ON(len > PPC440SPE_ADMA_DMA_MAX_BYTE_COUNT);
 
         spin_lock_bh(&ppc440spe_chan->lock);
 
@@ -2397,7 +2397,7 @@ static struct dma_async_tx_descriptor *ppc440spe_adma_prep_dma_xor(
                                      dma_dest, dma_src, src_cnt));
         if (unlikely(!len))
                 return NULL;
-        BUG_ON(unlikely(len > PPC440SPE_ADMA_XOR_MAX_BYTE_COUNT));
+        BUG_ON(len > PPC440SPE_ADMA_XOR_MAX_BYTE_COUNT);
 
         dev_dbg(ppc440spe_chan->device->common.dev,
                 "ppc440spe adma%d: %s src_cnt: %d len: %u int_en: %d\n",
@@ -2887,7 +2887,7 @@ static struct dma_async_tx_descriptor *ppc440spe_adma_prep_dma_pq(
         ADMA_LL_DBG(prep_dma_pq_dbg(ppc440spe_chan->device->id,
                                     dst, src, src_cnt));
         BUG_ON(!len);
-        BUG_ON(unlikely(len > PPC440SPE_ADMA_XOR_MAX_BYTE_COUNT));
+        BUG_ON(len > PPC440SPE_ADMA_XOR_MAX_BYTE_COUNT);
         BUG_ON(!src_cnt);
 
         if (src_cnt == 1 && dst[1] == src[0]) {