Re: [patch v2] nouveau: unwind on load errors

On Fri, Jul 30, 2010 at 05:04:32PM +0200, Dan Carpenter wrote:

nuveau_load() just returned directly if there was an error instead of

^^^^^^ typo

releasing resources.

Signed-off-by: Dan Carpenter error27@gmail.com

V2: updated to the nouveau git tree.

Thanks. Reviewed-by: Marcin Slusarz marcin.slusarz@gmail.com

diff --git a/drivers/gpu/drm/nouveau/nouveau_state.c b/drivers/gpu/drm/nouveau/nouveau_state.c index ee3729e..cf16bfb 100644 --- a/drivers/gpu/drm/nouveau/nouveau_state.c +++ b/drivers/gpu/drm/nouveau/nouveau_state.c @@ -739,8 +739,10 @@ int nouveau_load(struct drm_device *dev, unsigned long flags) int ret;

dev_priv = kzalloc(sizeof(*dev_priv), GFP_KERNEL);

• if (!dev_priv)

• return -ENOMEM;
  

• if (!dev_priv) {

• ret = -ENOMEM;
  

• goto err_out;
  

• } dev->dev_private = dev_priv; dev_priv->dev = dev;

@@ -750,8 +752,10 @@ int nouveau_load(struct drm_device *dev, unsigned long flags) dev->pci_vendor, dev->pci_device, dev->pdev->class);

dev_priv->wq = create_workqueue("nouveau");

• if (!dev_priv->wq)

• return -EINVAL;
  

• if (!dev_priv->wq) {

• ret = -EINVAL;
  

• goto err_priv;
  

• }

  /* resource 0 is mmio regs */ /* resource 1 is linear FB */

@@ -764,7 +768,8 @@ int nouveau_load(struct drm_device *dev, unsigned long flags) if (!dev_priv->mmio) { NV_ERROR(dev, "Unable to initialize the mmio mapping. " "Please report your setup to " DRIVER_EMAIL "\n");

• return -EINVAL;
  

• ret = -EINVAL;
  

• goto err_wq;
  

  } NV_DEBUG(dev, "regs mapped ok at 0x%llx\n", (unsigned long long)mmio_start_offs);

@@ -812,7 +817,8 @@ int nouveau_load(struct drm_device *dev, unsigned long flags) break; default: NV_INFO(dev, "Unsupported chipset 0x%08x\n", reg0);

• return -EINVAL;
  

• ret = -EINVAL;
  

• goto err_mmio;
  

  }

  NV_INFO(dev, "Detected an NV%2x generation card (0x%08x)\n",

@@ -820,7 +826,7 @@ int nouveau_load(struct drm_device *dev, unsigned long flags)

ret = nouveau_remove_conflicting_drivers(dev); if (ret)

• return ret;
  

• goto err_mmio;
  
  

  /* Map PRAMIN BAR, or on older cards, the aperture withing BAR0 */ if (dev_priv->card_type >= NV_40) {

@@ -834,7 +840,8 @@ int nouveau_load(struct drm_device *dev, unsigned long flags) dev_priv->ramin_size); if (!dev_priv->ramin) { NV_ERROR(dev, "Failed to PRAMIN BAR");

• 	return -ENOMEM;
  

• 	ret = -ENOMEM;
  

• 	goto err_mmio;
  

  } } else { dev_priv->ramin_size = 1 * 1024 * 1024;

@@ -842,7 +849,8 @@ int nouveau_load(struct drm_device *dev, unsigned long flags) dev_priv->ramin_size); if (!dev_priv->ramin) { NV_ERROR(dev, "Failed to map BAR0 PRAMIN.\n");

• 	return -ENOMEM;
  

• 	ret = -ENOMEM;
  

• 	goto err_mmio;
  

  } }

@@ -857,9 +865,21 @@ int nouveau_load(struct drm_device *dev, unsigned long flags) /* For kernel modesetting, init card now and bring up fbcon */ ret = nouveau_card_init(dev); if (ret)

• return ret;
  

• goto err_ramin;
  
  

  return 0;

+err_ramin:

• iounmap(dev_priv->ramin);

+err_mmio:

• iounmap(dev_priv->mmio);

+err_wq:

• destroy_workqueue(dev_priv->wq);

+err_priv:

• kfree(dev_priv);
• dev->dev_private = NULL;

+err_out:

• return ret;

}

void nouveau_lastclose(struct drm_device *dev)