linux-kernel - [PATCH] arch/powerpc: Use RCU_INIT_POINTER(x, NULL) in platforms/cell/spu

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Date:	Sat, 22 Mar 2014 12:20:56 +0530
From:	Monam Agarwal <monamagarwal123@...il.com>
To:	arnd@...db.de, benh@...nel.crashing.org, paulus@...ba.or,
	linuxppc-dev@...ts.ozlabs.org, cbe-oss-dev@...ts.ozlabs.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH] arch/powerpc: Use RCU_INIT_POINTER(x, NULL) in platforms/cell/spu_syscalls.c

Here rcu_assign_pointer() is ensuring that the
initialization of a structure is carried out before storing a pointer
to that structure.
So, rcu_assign_pointer(p, NULL) can always safely be converted to
RCU_INIT_POINTER(p, NULL).

Signed-off-by: Monam Agarwal <monamagarwal123@...il.com>
---
 arch/powerpc/platforms/cell/spu_syscalls.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/powerpc/platforms/cell/spu_syscalls.c b/arch/powerpc/platforms/cell/spu_syscalls.c
index 3844f13..38e0a1a 100644
--- a/arch/powerpc/platforms/cell/spu_syscalls.c
+++ b/arch/powerpc/platforms/cell/spu_syscalls.c
@@ -170,7 +170,7 @@ EXPORT_SYMBOL_GPL(register_spu_syscalls);
 void unregister_spu_syscalls(struct spufs_calls *calls)
 {
 	BUG_ON(spufs_calls->owner != calls->owner);
-	rcu_assign_pointer(spufs_calls, NULL);
+	RCU_INIT_POINTER(spufs_calls, NULL);
 	synchronize_rcu();
 }
 EXPORT_SYMBOL_GPL(unregister_spu_syscalls);
-- 
1.7.9.5

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