Merge branch 'fixes_for-3.6' into fixes

1 files changed, 25 insertions, 11 deletions

diff --git a/drivers/dma/imx-dma.c b/drivers/dma/imx-dma.c
index fcfeb3cd8d31..5084975d793c 100644
--- a/drivers/dma/imx-dma.c
+++ b/drivers/dma/imx-dma.c
@@ -172,7 +172,8 @@ struct imxdma_engine {
         struct device_dma_parameters    dma_parms;
         struct dma_device               dma_device;
         void __iomem                    *base;
-        struct clk                      *dma_clk;
+        struct clk                      *dma_ahb;
+        struct clk                      *dma_ipg;
         spinlock_t                      lock;
         struct imx_dma_2d_config        slots_2d[IMX_DMA_2D_SLOTS];
         struct imxdma_channel           channel[IMX_DMA_CHANNELS];
@@ -976,10 +977,20 @@ static int __init imxdma_probe(struct platform_device *pdev)
                 return 0;
         }
 
-        imxdma->dma_clk = clk_get(NULL, "dma");
-        if (IS_ERR(imxdma->dma_clk))
-                return PTR_ERR(imxdma->dma_clk);
-        clk_enable(imxdma->dma_clk);
+        imxdma->dma_ipg = devm_clk_get(&pdev->dev, "ipg");
+        if (IS_ERR(imxdma->dma_ipg)) {
+                ret = PTR_ERR(imxdma->dma_ipg);
+                goto err_clk;
+        }
+
+        imxdma->dma_ahb = devm_clk_get(&pdev->dev, "ahb");
+        if (IS_ERR(imxdma->dma_ahb)) {
+                ret = PTR_ERR(imxdma->dma_ahb);
+                goto err_clk;
+        }
+
+        clk_prepare_enable(imxdma->dma_ipg);
+        clk_prepare_enable(imxdma->dma_ahb);
 
         /* reset DMA module */
         imx_dmav1_writel(imxdma, DCR_DRST, DMA_DCR);
@@ -988,16 +999,14 @@ static int __init imxdma_probe(struct platform_device *pdev)
                 ret = request_irq(MX1_DMA_INT, dma_irq_handler, 0, "DMA", imxdma);
                 if (ret) {
                         dev_warn(imxdma->dev, "Can't register IRQ for DMA\n");
-                        kfree(imxdma);
-                        return ret;
+                        goto err_enable;
                 }
 
                 ret = request_irq(MX1_DMA_ERR, imxdma_err_handler, 0, "DMA", imxdma);
                 if (ret) {
                         dev_warn(imxdma->dev, "Can't register ERRIRQ for DMA\n");
                         free_irq(MX1_DMA_INT, NULL);
-                        kfree(imxdma);
-                        return ret;
+                        goto err_enable;
                 }
         }
 
@@ -1094,7 +1103,10 @@ err_init:
                 free_irq(MX1_DMA_INT, NULL);
                 free_irq(MX1_DMA_ERR, NULL);
         }
-
+err_enable:
+        clk_disable_unprepare(imxdma->dma_ipg);
+        clk_disable_unprepare(imxdma->dma_ahb);
+err_clk:
         kfree(imxdma);
         return ret;
 }
@@ -1114,7 +1126,9 @@ static int __exit imxdma_remove(struct platform_device *pdev)
                 free_irq(MX1_DMA_ERR, NULL);
         }
 
-        kfree(imxdma);
+        clk_disable_unprepare(imxdma->dma_ipg);
+        clk_disable_unprepare(imxdma->dma_ahb);
+        kfree(imxdma);
 
         return 0;
 }