drivers/net/cxgb3/cxgb3_main.c: prevent reading uninitialized stack memory

[net-next-2.6.git] / drivers / net / cxgb3 / cxgb3_main.c

diff --git a/drivers/net/cxgb3/cxgb3_main.c b/drivers/net/cxgb3/cxgb3_main.c
index 066fd5b09fda8fc61d36b8e08456ea96f5e135f6..f208712c0b90d6b675f1ef1179f5825ae9f9f911 100644 (file)
--- a/drivers/net/cxgb3/cxgb3_main.c
+++ b/drivers/net/cxgb3/cxgb3_main.c
@@ -2296,6 +2296,8 @@ static int cxgb_extension_ioctl(struct net_device *dev, void __user *useraddr)
        case CHELSIO_GET_QSET_NUM:{
                struct ch_reg edata;
 
+               memset(&edata, 0, sizeof(struct ch_reg));
+
                edata.cmd = CHELSIO_GET_QSET_NUM;
                edata.val = pi->nqsets;
                if (copy_to_user(useraddr, &edata, sizeof(edata)))
@@ -3198,17 +3200,17 @@ static int __devinit init_one(struct pci_dev *pdev,
                }
        }
 
-       err = pci_request_regions(pdev, DRV_NAME);
+       err = pci_enable_device(pdev);
        if (err) {
-               /* Just info, some other driver may have claimed the device. */
-               dev_info(&pdev->dev, "cannot obtain PCI resources\n");
-               return err;
+               dev_err(&pdev->dev, "cannot enable PCI device\n");
+               goto out;
        }
 
-       err = pci_enable_device(pdev);
+       err = pci_request_regions(pdev, DRV_NAME);
        if (err) {
-               dev_err(&pdev->dev, "cannot enable PCI device\n");
-               goto out_release_regions;
+               /* Just info, some other driver may have claimed the device. */
+               dev_info(&pdev->dev, "cannot obtain PCI resources\n");
+               goto out_disable_device;
        }
 
        if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(64))) {
@@ -3217,11 +3219,11 @@ static int __devinit init_one(struct pci_dev *pdev,
                if (err) {
                        dev_err(&pdev->dev, "unable to obtain 64-bit DMA for "
                               "coherent allocations\n");
-                       goto out_disable_device;
+                       goto out_release_regions;
                }
        } else if ((err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32))) != 0) {
                dev_err(&pdev->dev, "no usable DMA configuration\n");
-               goto out_disable_device;
+               goto out_release_regions;
        }
 
        pci_set_master(pdev);
@@ -3234,7 +3236,7 @@ static int __devinit init_one(struct pci_dev *pdev,
        adapter = kzalloc(sizeof(*adapter), GFP_KERNEL);
        if (!adapter) {
                err = -ENOMEM;
-               goto out_disable_device;
+               goto out_release_regions;
        }
 
        adapter->nofail_skb =
@@ -3370,11 +3372,12 @@ out_free_dev:
 out_free_adapter:
        kfree(adapter);
 
-out_disable_device:
-       pci_disable_device(pdev);
 out_release_regions:
        pci_release_regions(pdev);
+out_disable_device:
+       pci_disable_device(pdev);
        pci_set_drvdata(pdev, NULL);
+out:
        return err;
 }