>From cc48c0adaee97c8385a356aefa5b64a51818b4fd Mon Sep 17 00:00:00 2001 From: Fernando Guzman Lugo <[email protected]> Date: Mon, 16 Aug 2010 22:28:24 -0500 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 <[email protected]> --- 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 b8bcad5..8745d4e 100644 --- a/arch/arm/plat-omap/iovmm.c +++ b/arch/arm/plat-omap/iovmm.c @@ -295,7 +295,7 @@ 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) && (start + bytes <= tmp->da_start)) goto found; if (flags & IOVMF_DA_ANON) -- 1.7.0.4 -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
