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authorBjorn Helgaas <bjorn.helgaas@hp.com>2010-10-26 15:41:18 -0600
committerJesse Barnes <jbarnes@virtuousgeek.org>2010-10-26 15:33:24 -0700
commit5d6b1fa301b13cc651ee717a9b518124dea2f814 (patch)
tree53958650b23a85cbd1b58ebd9346fe62603c3a0d /kernel
parenta9cea017411c95ec789092971f9baaef1f826883 (diff)
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resources: factor out resource_clip() to simplify find_resource()
This factors out the min/max clipping to simplify find_resource(). No functional change. Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Diffstat (limited to 'kernel')
-rw-r--r--kernel/resource.c15
1 files changed, 11 insertions, 4 deletions
diff --git a/kernel/resource.c b/kernel/resource.c
index 7dc8ad24f91..26e9f254692 100644
--- a/kernel/resource.c
+++ b/kernel/resource.c
@@ -365,6 +365,15 @@ static resource_size_t simple_align_resource(void *data,
return avail->start;
}
+static void resource_clip(struct resource *res, resource_size_t min,
+ resource_size_t max)
+{
+ if (res->start < min)
+ res->start = min;
+ if (res->end > max)
+ res->end = max;
+}
+
/*
* Find empty slot in the resource tree given range and alignment.
*/
@@ -394,10 +403,8 @@ static int find_resource(struct resource *root, struct resource *new,
tmp.end = this->start - 1;
else
tmp.end = root->end;
- if (tmp.start < min)
- tmp.start = min;
- if (tmp.end > max)
- tmp.end = max;
+
+ resource_clip(&tmp, min, max);
tmp.start = ALIGN(tmp.start, align);
tmp.start = alignf(alignf_data, &tmp, size, align);