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| author |   Alexey Kardashevskiy <aik@ozlabs.ru> | 2015-06-05 16:34:56 +1000 |
|---|---|---|
| committer |   Michael Ellerman <mpe@ellerman.id.au> | 2015-06-11 15:14:55 +1000 |
| commit | ac9a58891a965216e9cb549a0a2012b97e3abcce (patch) | |
| tree | 142a3353874ea11fda00c83f3b6ff7a0f5f5d689 /arch/powerpc/kernel/iommu.c | |
| parent | powerpc/powernv/ioda: Clean up IOMMU group registration (diff) | |
| download | linux-dev-ac9a58891a965216e9cb549a0a2012b97e3abcce.tar.xz linux-dev-ac9a58891a965216e9cb549a0a2012b97e3abcce.zip | |
powerpc/iommu: Put IOMMU group explicitly
So far an iommu_table lifetime was the same as PE. Dynamic DMA windows
will change this and iommu_free_table() will not always require
the group to be released.
This moves iommu_group_put() out of iommu_free_table().
This adds a iommu_pseries_free_table() helper which does
iommu_group_put() and iommu_free_table(). Later it will be
changed to receive a table_group and we will have to change less
lines then.
This should cause no behavioural change.
Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Reviewed-by: Gavin Shan <gwshan@linux.vnet.ibm.com>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'arch/powerpc/kernel/iommu.c')
| -rw-r--r-- | arch/powerpc/kernel/iommu.c | 7 |
1 files changed, 0 insertions, 7 deletions
diff --git a/arch/powerpc/kernel/iommu.c b/arch/powerpc/kernel/iommu.c index b054f33ab1fb..3d47eb3e15dd 100644 --- a/arch/powerpc/kernel/iommu.c +++ b/arch/powerpc/kernel/iommu.c @@ -726,13 +726,6 @@ void iommu_free_table(struct iommu_table *tbl, const char *node_name) if (tbl->it_offset == 0) clear_bit(0, tbl->it_map); -#ifdef CONFIG_IOMMU_API - if (tbl->it_group) { - iommu_group_put(tbl->it_group); - BUG_ON(tbl->it_group); - } -#endif - /* verify that table contains no entries */ if (!bitmap_empty(tbl->it_map, tbl->it_size)) pr_warn("%s: Unexpected TCEs for %s\n", __func__, node_name); |