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| author | Andreea-Cristina Bernat <bernat.ada@gmail.com> | 2014-08-18 14:20:56 +0200 |
|---|---|---|
| committer | Joerg Roedel <jroedel@suse.de> | 2014-08-19 13:27:55 +0200 |
| commit | eecbad7d0306b9ee4f621517052913d1adaea753 (patch) | |
| tree | 262ed578906c82541193831dd1b9b4700a75a87b /drivers/iommu/dmar.c | |
| parent | iommu/vt-d: Don't store SIRTP request (diff) | |
| download | linux-eecbad7d0306b9ee4f621517052913d1adaea753.tar.xz linux-eecbad7d0306b9ee4f621517052913d1adaea753.zip | |
iommu: Replace rcu_assign_pointer() with RCU_INIT_POINTER()
The use of "rcu_assign_pointer()" is NULLing out the pointer.
According to RCU_INIT_POINTER()'s block comment:
"1. This use of RCU_INIT_POINTER() is NULLing out the pointer"
it is better to use it instead of rcu_assign_pointer() because it has a
smaller overhead.
The following Coccinelle semantic patch was used:
@@
@@
- rcu_assign_pointer
+ RCU_INIT_POINTER
(..., NULL)
Signed-off-by: Andreea-Cristina Bernat <bernat.ada@gmail.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Diffstat (limited to 'drivers/iommu/dmar.c')
| -rw-r--r-- | drivers/iommu/dmar.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/iommu/dmar.c b/drivers/iommu/dmar.c index 60ab474bfff3..8ed55b0a1ce4 100644 --- a/drivers/iommu/dmar.c +++ b/drivers/iommu/dmar.c @@ -247,7 +247,7 @@ int dmar_remove_dev_scope(struct dmar_pci_notify_info *info, u16 segment, for_each_active_dev_scope(devices, count, index, tmp) if (tmp == &info->dev->dev) { - rcu_assign_pointer(devices[index].dev, NULL); + RCU_INIT_POINTER(devices[index].dev, NULL); synchronize_rcu(); put_device(tmp); return 1; |