diff options
| author | Linus Torvalds <torvalds@linux-foundation.org> | 2009-08-02 14:04:19 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2009-08-02 14:10:18 -0700 |
| commit | 79896cf42f6a96d7e14f2dc3473443d68d74031d (patch) | |
| tree | bf4aa83fedfbe51d9a2a60d03007ec69de5a0cd2 | |
| parent | 0dd8486b5cfe8048e0613334659d9252ecd1b08a (diff) | |
Make pci_claim_resource() use request_resource() rather than insert_resource()
This function has traditionally used "insert_resource()", because before
commit cebd78a8c5 ("Fix pci_claim_resource") it used to just insert the
resource into whatever root resource tree that was indicated by
"pcibios_select_root()".
So there Matthew fixed it to actually look up the proper parent
resource, which means that now it's actively wrong to then traverse the
resource tree any more: we already know exactly where the new resource
should go.
And when we then did commit a76117dfd6 ("x86: Use pci_claim_resource"),
which changed the x86 PCI code from the open-coded
pr = pci_find_parent_resource(dev, r);
if (!pr || request_resource(pr, r) < 0) {
to using
if (pci_claim_resource(dev, idx) < 0) {
that "insert_resource()" now suddenly became a problem, and causes a
regression covered by
http://bugzilla.kernel.org/show_bug.cgi?id=13891
which this fixes.
Reported-and-tested-by: Rafael J. Wysocki <rjw@sisk.pl>
Cc: Matthew Wilcox <willy@linux.intel.com>
Cc: Andrew Patterson <andrew.patterson@hp.com>
Cc: Linux PCI <linux-pci@vger.kernel.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| -rw-r--r-- | drivers/pci/setup-res.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/pci/setup-res.c b/drivers/pci/setup-res.c index b711fb7181e..1898c7b4790 100644 --- a/drivers/pci/setup-res.c +++ b/drivers/pci/setup-res.c @@ -100,16 +100,16 @@ int pci_claim_resource(struct pci_dev *dev, int resource) { struct resource *res = &dev->resource[resource]; struct resource *root; - char *dtype = resource < PCI_BRIDGE_RESOURCES ? "device" : "bridge"; int err; root = pci_find_parent_resource(dev, res); err = -EINVAL; if (root != NULL) - err = insert_resource(root, res); + err = request_resource(root, res); if (err) { + const char *dtype = resource < PCI_BRIDGE_RESOURCES ? "device" : "bridge"; dev_err(&dev->dev, "BAR %d: %s of %s %pR\n", resource, root ? "address space collision on" : |