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Date: Fri, 29 May 2015 18:44:29 +1000 From: Alexey Kardashevskiy <aik@...abs.ru> To: linuxppc-dev@...ts.ozlabs.org Cc: Alexey Kardashevskiy <aik@...abs.ru>, Alex Williamson <alex.williamson@...hat.com>, Benjamin Herrenschmidt <benh@...nel.crashing.org>, David Gibson <david@...son.dropbear.id.au>, Gavin Shan <gwshan@...ux.vnet.ibm.com>, Paul Mackerras <paulus@...ba.org>, kvm@...r.kernel.org, linux-kernel@...r.kernel.org Subject: [PATCH kernel v11 05/34] powerpc/iommu: Always release iommu_table in iommu_free_table() 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@...abs.ru> --- Changes: v11: * fixed parameter checks --- arch/powerpc/kernel/iommu.c | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) diff --git a/arch/powerpc/kernel/iommu.c b/arch/powerpc/kernel/iommu.c index 3d47eb3..73eb39a 100644 --- a/arch/powerpc/kernel/iommu.c +++ b/arch/powerpc/kernel/iommu.c @@ -713,9 +713,11 @@ void iommu_free_table(struct iommu_table *tbl, const char *node_name) unsigned long bitmap_sz; unsigned int order; - if (!tbl || !tbl->it_map) { - printk(KERN_ERR "%s: expected TCE map for %s\n", __func__, - node_name); + if (!tbl) + return; + + if (!tbl->it_map) { + kfree(tbl); return; } -- 2.4.0.rc3.8.gfb3e7d5 -- 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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