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powerpc/viobus: Free TCE table on device release 

Release the TCE table as the XXX suggests, except on FW_FEATURE_ISERIES,
where the tables are allocated globally and reused.

Signed-off-by: Milton Miller <miltonm@bga.com>
Signed-off-by: Nishanth Aravamudan <nacc@us.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
This commit is contained in:
Nishanth Aravamudan 2010-09-15 08:05:48 +00:00 committed by Benjamin Herrenschmidt
parent edea8f6f48
commit 45848e0fc1
1 changed files with 6 additions and 1 deletions
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7
arch/powerpc/kernel/vio.c
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@ -1184,7 +1184,12 @@ EXPORT_SYMBOL(vio_unregister_driver);
/* vio_dev refcount hit 0 */
static void __devinit vio_dev_release(struct device *dev)
{
/* XXX should free TCE table */
struct iommu_table *tbl = get_iommu_table_base(dev);
/* iSeries uses a common table for all vio devices */
if (!firmware_has_feature(FW_FEATURE_ISERIES) && tbl)
iommu_free_table(tbl, dev->of_node ?
dev->of_node->full_name : dev_name(dev));
of_node_put(dev->of_node);
kfree(to_vio_dev(dev));
}