fsldma: fix incorrect exit path for initialization

Signed-off-by: Li Yang <leoli@freescale.com>
Acked-by: Zhang Wei <zw@zh-kernel.org>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>

1 files changed, 16 insertions, 15 deletions

diff --git a/drivers/dma/fsldma.c b/drivers/dma/fsldma.c
index 054eabffc185..724f6fdd0af6 100644
--- a/drivers/dma/fsldma.c
+++ b/drivers/dma/fsldma.c
@@ -809,8 +809,7 @@ static int fsl_dma_self_test(struct fsl_dma_chan *fsl_chan)
         if (!src) {
                 dev_err(fsl_chan->dev,
                                 "selftest: Cannot alloc memory for test!\n");
-                err = -ENOMEM;
-                goto out;
+                return -ENOMEM;
         }
 
         dest = src + test_size;
@@ -842,7 +841,7 @@ static int fsl_dma_self_test(struct fsl_dma_chan *fsl_chan)
         if (fsl_dma_is_complete(chan, cookie, NULL, NULL) != DMA_SUCCESS) {
                 dev_err(fsl_chan->dev, "selftest: Time out!\n");
                 err = -ENODEV;
-                goto out;
+                goto free_resources;
         }
 
         /* Test free and re-alloc channel resources */
@@ -927,8 +926,7 @@ static int __devinit of_fsl_dma_chan_probe(struct of_device *dev,
         if (!new_fsl_chan) {
                 dev_err(&dev->dev, "No free memory for allocating "
                                 "dma channels!\n");
-                err = -ENOMEM;
-                goto err;
+                return -ENOMEM;
         }
 
         /* get dma channel register base */
@@ -936,7 +934,7 @@ static int __devinit of_fsl_dma_chan_probe(struct of_device *dev,
         if (err) {
                 dev_err(&dev->dev, "Can't get %s property 'reg'\n",
                                 dev->node->full_name);
-                goto err;
+                goto err_no_reg;
         }
 
         new_fsl_chan->feature = *(u32 *)match->data;
@@ -958,7 +956,7 @@ static int __devinit of_fsl_dma_chan_probe(struct of_device *dev,
                 dev_err(&dev->dev, "There is no %d channel!\n",
                                 new_fsl_chan->id);
                 err = -EINVAL;
-                goto err;
+                goto err_no_chan;
         }
         fdev->chan[new_fsl_chan->id] = new_fsl_chan;
         tasklet_init(&new_fsl_chan->tasklet, dma_do_tasklet,
@@ -997,23 +995,26 @@ static int __devinit of_fsl_dma_chan_probe(struct of_device *dev,
                 if (err) {
                         dev_err(&dev->dev, "DMA channel %s request_irq error "
                                 "with return %d\n", dev->node->full_name, err);
-                        goto err;
+                        goto err_no_irq;
                 }
         }
 
         err = fsl_dma_self_test(new_fsl_chan);
         if (err)
-                goto err;
+                goto err_self_test;
 
         dev_info(&dev->dev, "#%d (%s), irq %d\n", new_fsl_chan->id,
                                 match->compatible, new_fsl_chan->irq);
 
         return 0;
-err:
-        dma_halt(new_fsl_chan);
-        iounmap(new_fsl_chan->reg_base);
+
+err_self_test:
         free_irq(new_fsl_chan->irq, new_fsl_chan);
+err_no_irq:
         list_del(&new_fsl_chan->common.device_node);
+err_no_chan:
+        iounmap(new_fsl_chan->reg_base);
+err_no_reg:
         kfree(new_fsl_chan);
         return err;
 }
@@ -1054,8 +1055,7 @@ static int __devinit of_fsl_dma_probe(struct of_device *dev,
         fdev = kzalloc(sizeof(struct fsl_dma_device), GFP_KERNEL);
         if (!fdev) {
                 dev_err(&dev->dev, "No enough memory for 'priv'\n");
-                err = -ENOMEM;
-                goto err;
+                return -ENOMEM;
         }
         fdev->dev = &dev->dev;
         INIT_LIST_HEAD(&fdev->common.channels);
@@ -1065,7 +1065,7 @@ static int __devinit of_fsl_dma_probe(struct of_device *dev,
         if (err) {
                 dev_err(&dev->dev, "Can't get %s property 'reg'\n",
                                 dev->node->full_name);
-                goto err;
+                goto err_no_reg;
         }
 
         dev_info(&dev->dev, "Probe the Freescale DMA driver for %s "
@@ -1103,6 +1103,7 @@ static int __devinit of_fsl_dma_probe(struct of_device *dev,
 
 err:
         iounmap(fdev->reg_base);
+err_no_reg:
         kfree(fdev);
         return err;
 }