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OMAP: iovmm: no gap checking for fixed address

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If some fixed da address is wanted to be mapped and the page
is freed but it is used as gap, the mapping will fail.
This patch is fixing that and olny keeps the gap for
not fixed address.

Signed-off-by: Fernando Guzman Lugo <x0095840@ti.com>
Acked-by: Hiroshi DOYU <Hiroshi.DOYU@nokia.com>
This commit is contained in:
Guzman Lugo, Fernando 2010-12-15 00:54:00 +00:00 committed by Hari Kanigeri
parent ff0fba0bca
commit ba6e1f4ff4
1 changed files with 3 additions and 3 deletions
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6
arch/arm/plat-omap/iovmm.c
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@ -289,10 +289,10 @@ 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)
if (prev_end > start)
break;
if (start + bytes < tmp->da_start)
if (start + bytes <= tmp->da_start)
goto found;
if (flags & IOVMF_DA_ANON)
@ -301,7 +301,7 @@ static struct iovm_struct *alloc_iovm_area(struct iommu *obj, u32 da,
prev_end = tmp->da_end;
}
if ((start > prev_end) && (ULONG_MAX - start >= bytes))
if ((start >= prev_end) && (ULONG_MAX - start + 1 >= bytes))
goto found;
dev_dbg(obj->dev, "%s: no space to fit %08x(%x) flags: %08x\n",