diff options
author | Kulikov Vasiliy <segooon@gmail.com> | 2010-08-03 05:43:15 (GMT) |
---|---|---|
committer | David S. Miller <davem@davemloft.net> | 2010-08-04 23:18:02 (GMT) |
commit | 7a0c2029d655e03499b1e2a3daeeab6a56d72b87 (patch) | |
tree | 2de949a524222b5391483ddeba9e9e3b154584ff /drivers/net/cxgb4vf/cxgb4vf_main.c | |
parent | 7aaaaa1e44b2a4047dfe05f304a5090eb995cf44 (diff) | |
download | linux-fsl-qoriq-7a0c2029d655e03499b1e2a3daeeab6a56d72b87.tar.xz |
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/cxgb4vf/cxgb4vf_main.c')
-rw-r--r-- | drivers/net/cxgb4vf/cxgb4vf_main.c | 31 |
1 files changed, 16 insertions, 15 deletions
diff --git a/drivers/net/cxgb4vf/cxgb4vf_main.c b/drivers/net/cxgb4vf/cxgb4vf_main.c index a165632..7b6d07f 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; |