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authorAndreea-Cristina Bernat <bernat.ada@gmail.com>2014-08-18 16:20:56 +0400
committerJoerg Roedel <jroedel@suse.de>2014-08-19 15:27:55 +0400
commiteecbad7d0306b9ee4f621517052913d1adaea753 (patch)
tree262ed578906c82541193831dd1b9b4700a75a87b /drivers/iommu/dmar.c
parentf63ef69028742b09c1c0896177d555a30ff6cf13 (diff)
downloadlinux-eecbad7d0306b9ee4f621517052913d1adaea753.tar.xz
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.c2
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;