From 966f3a7570447c5025d67a618d408e68a3ae3167 Mon Sep 17 00:00:00 2001 From: Bjorn Helgaas Date: Thu, 11 Mar 2010 17:01:19 -0700 Subject: [PATCH] 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 Signed-off-by: Jesse Barnes --- drivers/pci/setup-res.c | 14 ++++++++------ 1 file 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); -- 2.20.1