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authorKulikov Vasiliy <segooon@gmail.com>2010-08-03 05:43:15 +0000
committerDavid S. Miller <davem@davemloft.net>2010-08-04 16:18:02 -0700
commit7a0c2029d655e03499b1e2a3daeeab6a56d72b87 (patch)
tree2de949a524222b5391483ddeba9e9e3b154584ff /drivers/net
parent7aaaaa1e44b2a4047dfe05f304a5090eb995cf44 (diff)
downloadblackbird-op-linux-7a0c2029d655e03499b1e2a3daeeab6a56d72b87.tar.gz
blackbird-op-linux-7a0c2029d655e03499b1e2a3daeeab6a56d72b87.zip
cxgb4vf: do not use PCI resources before pci_enable_device()
IRQ and resource[] may not have correct values until after PCI hotplug setup occurs at pci_enable_device() time. The semantic match that finds this problem is as follows: // <smpl> @@ identifier x; identifier request ~= "pci_request.*|pci_resource.*"; @@ ( * x->irq | * x->resource | * request(x, ...) ) ... *pci_enable_device(x) // </smpl> Signed-off-by: Kulikov Vasiliy <segooon@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net')
-rw-r--r--drivers/net/cxgb4vf/cxgb4vf_main.c31
1 files changed, 16 insertions, 15 deletions
diff --git a/drivers/net/cxgb4vf/cxgb4vf_main.c b/drivers/net/cxgb4vf/cxgb4vf_main.c
index a16563219ac9..7b6d07f50c71 100644
--- a/drivers/net/cxgb4vf/cxgb4vf_main.c
+++ b/drivers/net/cxgb4vf/cxgb4vf_main.c
@@ -2462,23 +2462,24 @@ static int __devinit cxgb4vf_pci_probe(struct pci_dev *pdev,
version_printed = 1;
}
+
/*
- * Reserve PCI resources for the device. If we can't get them some
- * other driver may have already claimed the device ...
+ * Initialize generic PCI device state.
*/
- err = pci_request_regions(pdev, KBUILD_MODNAME);
+ err = pci_enable_device(pdev);
if (err) {
- dev_err(&pdev->dev, "cannot obtain PCI resources\n");
+ dev_err(&pdev->dev, "cannot enable PCI device\n");
return err;
}
/*
- * Initialize generic PCI device state.
+ * Reserve PCI resources for the device. If we can't get them some
+ * other driver may have already claimed the device ...
*/
- err = pci_enable_device(pdev);
+ err = pci_request_regions(pdev, KBUILD_MODNAME);
if (err) {
- dev_err(&pdev->dev, "cannot enable PCI device\n");
- goto err_release_regions;
+ dev_err(&pdev->dev, "cannot obtain PCI resources\n");
+ goto err_disable_device;
}
/*
@@ -2491,14 +2492,14 @@ static int __devinit cxgb4vf_pci_probe(struct pci_dev *pdev,
if (err) {
dev_err(&pdev->dev, "unable to obtain 64-bit DMA for"
" coherent allocations\n");
- goto err_disable_device;
+ goto err_release_regions;
}
pci_using_dac = 1;
} else {
err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
if (err != 0) {
dev_err(&pdev->dev, "no usable DMA configuration\n");
- goto err_disable_device;
+ goto err_release_regions;
}
pci_using_dac = 0;
}
@@ -2514,7 +2515,7 @@ static int __devinit cxgb4vf_pci_probe(struct pci_dev *pdev,
adapter = kzalloc(sizeof(*adapter), GFP_KERNEL);
if (!adapter) {
err = -ENOMEM;
- goto err_disable_device;
+ goto err_release_regions;
}
pci_set_drvdata(pdev, adapter);
adapter->pdev = pdev;
@@ -2750,13 +2751,13 @@ err_free_adapter:
kfree(adapter);
pci_set_drvdata(pdev, NULL);
-err_disable_device:
- pci_disable_device(pdev);
- pci_clear_master(pdev);
-
err_release_regions:
pci_release_regions(pdev);
pci_set_drvdata(pdev, NULL);
+ pci_clear_master(pdev);
+
+err_disable_device:
+ pci_disable_device(pdev);
err_out:
return err;
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