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Date: Tue, 17 Aug 2010 11:56:01 -0500 From: Fernando Guzman Lugo <x0095840@...com> To: <linux-kernel@...r.kernel.org>, <linux-omap@...r.kernel.org> Cc: <Hiroshi.DOYU@...ia.com>, <h-kanigeri2@...com>, Fernando Guzman Lugo <x0095840@...com> Subject: [PATCH] iommu: fix end address of vm area comparation in alloc_iovm_area End address of the vm area is .start + bytes -1., not start + byte. This patch fixes that issue by doing an inclusive comparison with tmp->da_start. This issue was preventing allocate an area of size exactly the same than the free area. I did no change the value of da_end of each vm area because it is used to get area size in several places. Signed-off-by: Fernando Guzman Lugo <x0095840@...com> Acked-by: Hiroshi DOYU <Hiroshi.DOYU@...ia.com> --- arch/arm/plat-omap/iovmm.c | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) diff --git a/arch/arm/plat-omap/iovmm.c b/arch/arm/plat-omap/iovmm.c index 8ce0de2..24ca9c4 100644 --- a/arch/arm/plat-omap/iovmm.c +++ b/arch/arm/plat-omap/iovmm.c @@ -292,7 +292,7 @@ static struct iovm_struct *alloc_iovm_area(struct iommu *obj, u32 da, if (prev_end >= start) break; - if (start + bytes < tmp->da_start) + if (start + bytes <= tmp->da_start) goto found; if (flags & IOVMF_DA_ANON) -- 1.6.3.3 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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