OMAP: iovmm: no gap checking for fixed address

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>

1 files changed, 3 insertions, 3 deletions

diff --git a/arch/arm/plat-omap/iovmm.c b/arch/arm/plat-omap/iovmm.c
index 8ce0de247c71..34f0012b5676 100644
--- a/arch/arm/plat-omap/iovmm.c
+++ b/arch/arm/plat-omap/iovmm.c
@@ -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",