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authorBjorn Helgaas <bjorn.helgaas@hp.com>2010-03-12 03:01:09 +0300
committerJesse Barnes <jbarnes@virtuousgeek.org>2010-03-23 23:33:50 +0300
commit66f1207bce10fd80ee8ce99b67d617644612f05e (patch)
tree3031bb74dce8c54af69dcd4aa7e566f40a5511ce /include/linux/ioport.h
parent7c9e2b1c4784c6e574f69dbd904b2822f2e04d6e (diff)
downloadlinux-66f1207bce10fd80ee8ce99b67d617644612f05e.tar.xz
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/ioport.h')
-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 71ab79da7e7f..26fad187d661 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,