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authorBjorn Helgaas <bjorn.helgaas@hp.com>2010-03-11 17:01:09 -0700
committerJesse Barnes <jbarnes@virtuousgeek.org>2010-03-23 13:33:50 -0700
commit66f1207bce10fd80ee8ce99b67d617644612f05e (patch)
tree3031bb74dce8c54af69dcd4aa7e566f40a5511ce /include/linux
parent7c9e2b1c4784c6e574f69dbd904b2822f2e04d6e (diff)
downloadop-kernel-dev-66f1207bce10fd80ee8ce99b67d617644612f05e.zip
op-kernel-dev-66f1207bce10fd80ee8ce99b67d617644612f05e.tar.gz
resources: add interfaces that return conflict information
request_resource() and insert_resource() only return success or failure, which no information about what existing resource conflicted with the proposed new reservation. This patch adds request_resource_conflict() and insert_resource_conflict(), which return the conflicting resource. Callers may use this for better error messages or to adjust the new resource and retry the request. Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Diffstat (limited to 'include/linux')
-rw-r--r--include/linux/ioport.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/ioport.h b/include/linux/ioport.h
index 71ab79d..26fad18 100644
--- a/include/linux/ioport.h
+++ b/include/linux/ioport.h
@@ -112,12 +112,14 @@ struct resource_list {
extern struct resource ioport_resource;
extern struct resource iomem_resource;
+extern struct resource *request_resource_conflict(struct resource *root, struct resource *new);
extern int request_resource(struct resource *root, struct resource *new);
extern int release_resource(struct resource *new);
void release_child_resources(struct resource *new);
extern void reserve_region_with_split(struct resource *root,
resource_size_t start, resource_size_t end,
const char *name);
+extern struct resource *insert_resource_conflict(struct resource *parent, struct resource *new);
extern int insert_resource(struct resource *parent, struct resource *new);
extern void insert_resource_expand_to_fit(struct resource *root, struct resource *new);
extern int allocate_resource(struct resource *root, struct resource *new,
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