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omap iommu: Exit iteration if no possibility of available area
author
Hiroshi DOYU
<Hiroshi.DOYU@nokia.com>
Thu, 6 May 2010 14:09:25 +0000
(17:09 +0300)
committer
Hiroshi DOYU
<Hiroshi.DOYU@nokia.com>
Fri, 14 May 2010 07:23:37 +0000
(10:23 +0300)
Searching avaialable spaces should be stopped as soon as it turns out
that there's no possibility with the rest of it.
Signed-off-by: Hiroshi DOYU <Hiroshi.DOYU@nokia.com>
arch/arm/plat-omap/iovmm.c
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diff --git
a/arch/arm/plat-omap/iovmm.c
b/arch/arm/plat-omap/iovmm.c
index 5afe0135b979c1c95ef0d9c19378a9aa276c2626..e43983ba59c5eb77ac61caa3a2ebaca83b50416c 100644
(file)
--- a/
arch/arm/plat-omap/iovmm.c
+++ b/
arch/arm/plat-omap/iovmm.c
@@
-287,7
+287,10
@@
static struct iovm_struct *alloc_iovm_area(struct iommu *obj, u32 da,
prev_end = 0;
list_for_each_entry(tmp, &obj->mmap, list) {
- if ((prev_end < start) && (start + bytes < tmp->da_start))
+ if (prev_end >= start)
+ break;
+
+ if (start + bytes < tmp->da_start)
goto found;
if (flags & IOVMF_DA_ANON)