| From | Alexey Kardashevskiy <> | Subject | [PATCH kernel v10 05/34] powerpc/iommu: Always release iommu_table in iommu_free_table() | Date | Tue, 12 May 2015 01:38:54 +1000 |
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At the moment iommu_free_table() only releases memory if the table was initialized for the platform code use, i.e. it had it_map initialized (which purpose is to track DMA memory space use).
With dynamic DMA windows, we will need to be able to release iommu_table even if it was used for VFIO in which case it_map is NULL so does the patch.
Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru> --- arch/powerpc/kernel/iommu.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/arch/powerpc/kernel/iommu.c b/arch/powerpc/kernel/iommu.c index 3d47eb3..2c02d4c 100644 --- a/arch/powerpc/kernel/iommu.c +++ b/arch/powerpc/kernel/iommu.c @@ -714,8 +714,7 @@ void iommu_free_table(struct iommu_table *tbl, const char *node_name) unsigned int order; if (!tbl || !tbl->it_map) { - printk(KERN_ERR "%s: expected TCE map for %s\n", __func__, - node_name); + kfree(tbl); return; } -- 2.4.0.rc3.8.gfb3e7d5
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