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Subject[PATCH] hwspinlock/core: move the dereference below the NULL test
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From: Wei Yongjun <yongjun_wei@trendmicro.com.cn>

The dereference should be moved below the NULL test.

spatch with a semantic match is used to found this.
(http://coccinelle.lip6.fr/)

Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
---
drivers/hwspinlock/hwspinlock_core.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/hwspinlock/hwspinlock_core.c b/drivers/hwspinlock/hwspinlock_core.c
index 1201a15..db713c0 100644
--- a/drivers/hwspinlock/hwspinlock_core.c
+++ b/drivers/hwspinlock/hwspinlock_core.c
@@ -552,7 +552,7 @@ EXPORT_SYMBOL_GPL(hwspin_lock_request_specific);
*/
int hwspin_lock_free(struct hwspinlock *hwlock)
{
- struct device *dev = hwlock->bank->dev;
+ struct device *dev;
struct hwspinlock *tmp;
int ret;

@@ -561,6 +561,7 @@ int hwspin_lock_free(struct hwspinlock *hwlock)
return -EINVAL;
}

+ dev = hwlock->bank->dev;
mutex_lock(&hwspinlock_tree_lock);

/* make sure the hwspinlock is used */


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