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| author | Bjorn Helgaas <bjorn.helgaas@hp.com> | 2010-03-12 01:01:19 +0100 |
|---|---|---|
| committer | Jesse Barnes <jbarnes@virtuousgeek.org> | 2010-03-24 21:21:34 +0100 |
| commit | 966f3a7570447c5025d67a618d408e68a3ae3167 (patch) | |
| tree | a7d87cc0aa186a366b7a16971258988c4470906a /drivers/pci/setup-res.c | |
| parent | resources: add interfaces that return conflict information (diff) | |
| download | linux-966f3a7570447c5025d67a618d408e68a3ae3167.tar.xz linux-966f3a7570447c5025d67a618d408e68a3ae3167.zip | |
PCI: for address space collisions, show conflicting resource
With request_resource_conflict(), we can learn what the actual conflict is,
so print that info for debugging purposes.
Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Diffstat (limited to 'drivers/pci/setup-res.c')
| -rw-r--r-- | drivers/pci/setup-res.c | 14 |
1 files changed, 8 insertions, 6 deletions
diff --git a/drivers/pci/setup-res.c b/drivers/pci/setup-res.c index 7d678bb15ffb..17bed18d24ad 100644 --- a/drivers/pci/setup-res.c +++ b/drivers/pci/setup-res.c @@ -93,8 +93,7 @@ void pci_update_resource(struct pci_dev *dev, int resno) int pci_claim_resource(struct pci_dev *dev, int resource) { struct resource *res = &dev->resource[resource]; - struct resource *root; - int err; + struct resource *root, *conflict; root = pci_find_parent_resource(dev, res); if (!root) { @@ -103,12 +102,15 @@ int pci_claim_resource(struct pci_dev *dev, int resource) return -EINVAL; } - err = request_resource(root, res); - if (err) + conflict = request_resource_conflict(root, res); + if (conflict) { dev_err(&dev->dev, - "address space collision: %pR already in use\n", res); + "address space collision: %pR conflicts with %s %pR\n", + res, conflict->name, conflict); + return -EBUSY; + } - return err; + return 0; } EXPORT_SYMBOL(pci_claim_resource); |