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| author | Kulikov Vasiliy <segooon@gmail.com> | 2010-08-03 19:44:23 +0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2010-10-22 10:16:42 -0700 |
| commit | 1037246cacd45d951227c8798f181b3ba5c8bcbe (patch) | |
| tree | dbf5580c239ddd84ec4bd6c8479a60d55a62f5d9 /drivers/uio | |
| parent | d79d32440c33cf60f1e0efbeb8144b1647be0b50 (diff) | |
| download | linux-1037246cacd45d951227c8798f181b3ba5c8bcbe.tar.gz linux-1037246cacd45d951227c8798f181b3ba5c8bcbe.tar.bz2 linux-1037246cacd45d951227c8798f181b3ba5c8bcbe.zip | |
uio: 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>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Hans J. Koch <hjk@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/uio')
| -rw-r--r-- | drivers/uio/uio_pci_generic.c | 13 |
1 files changed, 7 insertions, 6 deletions
diff --git a/drivers/uio/uio_pci_generic.c b/drivers/uio/uio_pci_generic.c index 85c9884a67fd..fc22e1e6f215 100644 --- a/drivers/uio/uio_pci_generic.c +++ b/drivers/uio/uio_pci_generic.c @@ -128,12 +128,6 @@ static int __devinit probe(struct pci_dev *pdev, struct uio_pci_generic_dev *gdev; int err; - if (!pdev->irq) { - dev_warn(&pdev->dev, "No IRQ assigned to device: " - "no support for interrupts?\n"); - return -ENODEV; - } - err = pci_enable_device(pdev); if (err) { dev_err(&pdev->dev, "%s: pci_enable_device failed: %d\n", @@ -141,6 +135,13 @@ static int __devinit probe(struct pci_dev *pdev, return err; } + if (!pdev->irq) { + dev_warn(&pdev->dev, "No IRQ assigned to device: " + "no support for interrupts?\n"); + pci_disable_device(pdev); + return -ENODEV; + } + err = verify_pci_2_3(pdev); if (err) goto err_verify; |