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| author | Hiroshi DOYU <Hiroshi.DOYU@nokia.com> | 2010-02-15 10:03:32 -0800 |
|---|---|---|
| committer | Tony Lindgren <tony@atomide.com> | 2010-02-15 10:03:32 -0800 |
| commit | c127c7dc1abb7f02dcfbbea173e7abb4f2d4585e (patch) | |
| tree | 0d50ffccf7c1c5f1e4d15a0785c2670565dca78e /arch/arm/plat-omap/iommu.c | |
| parent | 8d33ea5881bce56f85de7fcc90e1c5618fa5b62d (diff) | |
| download | lwn-c127c7dc1abb7f02dcfbbea173e7abb4f2d4585e.tar.gz lwn-c127c7dc1abb7f02dcfbbea173e7abb4f2d4585e.zip | |
omap iommu: fix incorrect address for largepage 1st entry
There was a potential risk that the following "memset" could override
its range if a given address was not the 1st entry of a
largepage. This is not the case for "iovmm".
Reported-by: Hari Nagalla <hnagalla@ti.com>
Signed-off-by: Hiroshi DOYU <Hiroshi.DOYU@nokia.com>
Signed-off-by: Hari Nagalla <hnagalla@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Diffstat (limited to 'arch/arm/plat-omap/iommu.c')
| -rw-r--r-- | arch/arm/plat-omap/iommu.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/arm/plat-omap/iommu.c b/arch/arm/plat-omap/iommu.c index e74811920668..905ed832df56 100644 --- a/arch/arm/plat-omap/iommu.c +++ b/arch/arm/plat-omap/iommu.c @@ -1,7 +1,7 @@ /* * omap iommu: tlb and pagetable primitives * - * Copyright (C) 2008-2009 Nokia Corporation + * Copyright (C) 2008-2010 Nokia Corporation * * Written by Hiroshi DOYU <Hiroshi.DOYU@nokia.com>, * Paul Mundt and Toshihiro Kobayashi @@ -646,7 +646,7 @@ static size_t iopgtable_clear_entry_core(struct iommu *obj, u32 da) if (*iopte & IOPTE_LARGE) { nent *= 16; /* rewind to the 1st entry */ - iopte = (u32 *)((u32)iopte & IOLARGE_MASK); + iopte = iopte_offset(iopgd, (da & IOLARGE_MASK)); } bytes *= nent; memset(iopte, 0, nent * sizeof(*iopte)); |