From: Monam Agarwal <monamagarwal123@gmail.com>
Date: Sat, 22 Mar 2014 06:50:56 +0000 (+0530)
Subject: arch/powerpc: Use RCU_INIT_POINTER(x, NULL) in platforms/cell/spu_syscalls.c
X-Git-Tag: v3.15-rc1~43^2~4
X-Git-Url: https://asedeno.scripts.mit.edu/gitweb/?a=commitdiff_plain;h=282efb7023d482632f2fa567163362841423a1ac;p=linux.git

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@gmail.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---

diff --git a/arch/powerpc/platforms/cell/spu_syscalls.c b/arch/powerpc/platforms/cell/spu_syscalls.c
index 3844f1397fc3..38e0a1a5cec3 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);