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authorBjorn Helgaas <bhelgaas@google.com>2014-02-04 19:32:28 -0800
committerBjorn Helgaas <bhelgaas@google.com>2014-02-26 14:42:09 -0700
commit5edb93b89f6cc3089ee283656555e7a9ad36a8a0 (patch)
tree496964f830aa06af8351de8645ec7e19ef931264 /drivers/pci
parentd2e074ccbf84e91819ae07b3ca838120db2c97a9 (diff)
downloadop-kernel-dev-5edb93b89f6cc3089ee283656555e7a9ad36a8a0.zip
op-kernel-dev-5edb93b89f6cc3089ee283656555e7a9ad36a8a0.tar.gz
resource: Add resource_contains()
We have two identical copies of resource_contains() already, and more places that could use it. This moves it to ioport.h where it can be shared. resource_contains(struct resource *r1, struct resource *r2) returns true iff r1 and r2 are the same type (most callers already checked this separately) and the r1 address range completely contains r2. In addition, the new resource_contains() checks that both r1 and r2 have addresses assigned to them. If a resource is IORESOURCE_UNSET, it doesn't have a valid address and can't contain or be contained by another resource. Some callers already check this or for res->start. No functional change. Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Diffstat (limited to 'drivers/pci')
-rw-r--r--drivers/pci/host-bridge.c8
1 files changed, 0 insertions, 8 deletions
diff --git a/drivers/pci/host-bridge.c b/drivers/pci/host-bridge.c
index 06ace62..47aaf22 100644
--- a/drivers/pci/host-bridge.c
+++ b/drivers/pci/host-bridge.c
@@ -32,11 +32,6 @@ void pci_set_host_bridge_release(struct pci_host_bridge *bridge,
bridge->release_data = release_data;
}
-static bool resource_contains(struct resource *res1, struct resource *res2)
-{
- return res1->start <= res2->start && res1->end >= res2->end;
-}
-
void pcibios_resource_to_bus(struct pci_bus *bus, struct pci_bus_region *region,
struct resource *res)
{
@@ -45,9 +40,6 @@ void pcibios_resource_to_bus(struct pci_bus *bus, struct pci_bus_region *region,
resource_size_t offset = 0;
list_for_each_entry(window, &bridge->windows, list) {
- if (resource_type(res) != resource_type(window->res))
- continue;
-
if (resource_contains(window->res, res)) {
offset = window->offset;
break;
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