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Commit ba6e1f4f authored by Guzman Lugo, Fernando's avatar Guzman Lugo, Fernando Committed by Hari Kanigeri
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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: default avatarFernando Guzman Lugo <x0095840@ti.com>
Acked-by: default avatarHiroshi DOYU <Hiroshi.DOYU@nokia.com>
parent ff0fba0b

arch/arm/plat-omap/iovmm.c

+3 −3
Original line number Diff line number Diff line
@@ -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",