Minki/linux
1
0
Fork 1
mirror of https://github.com/torvalds/linux.git synced 2024-11-22 20:22:09 +00:00
Code Issues Packages Projects Releases Wiki Activity

resources: allow adjust_resource() for resources with no parent

Browse Source 
If a resource has no parent, allow its start/end to be set arbitrarily
as long as any children are still contained within the new range.

[bhelgaas: changelog]
Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
This commit is contained in:
Yinghai Lu 2012-05-17 18:51:11 -07:00 committed by Bjorn Helgaas
parent 5cc62c2022
commit 82ec90eac3
1 changed files with 8 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

13
kernel/resource.c
View File

@ -722,14 +722,12 @@ int adjust_resource(struct resource *res, resource_size_t start, resource_size_t
write_lock(&resource_lock);
if (!parent)
goto skip;
if ((start < parent->start) || (end > parent->end))
goto out;
for (tmp = res->child; tmp; tmp = tmp->sibling) {
if ((tmp->start < start) || (tmp->end > end))
goto out;
}
if (res->sibling && (res->sibling->start <= end))
goto out;
@ -741,6 +739,11 @@ int adjust_resource(struct resource *res, resource_size_t start, resource_size_t
goto out;
}
skip:
for (tmp = res->child; tmp; tmp = tmp->sibling)
if ((tmp->start < start) || (tmp->end > end))
goto out;
res->start = start;
res->end = end;
result = 0;