[PATCH 08/10] crypto: atmel-aes: initialize spinlock in probe

From: Leilei Zhao
Date: Tue Apr 07 2015 - 05:50:41 EST

Kernel will report "BUG: spinlock lockup suspected on CPU#0"
when CONFIG_DEBUG_SPINLOCK is enabled in kernel config and the
spinlock is used at the first time. It's caused by uninitialized
spinlock, so just initialize it in probe.

Signed-off-by: Leilei Zhao <leilei.zhao@xxxxxxxxx>
Acked-by: Nicolas Ferre <nicolas.ferre@xxxxxxxxx>
drivers/crypto/atmel-aes.c | 1 +
1 file changed, 1 insertion(+)

diff --git a/drivers/crypto/atmel-aes.c b/drivers/crypto/atmel-aes.c
index ddea772..f0532ab 100644
--- a/drivers/crypto/atmel-aes.c
+++ b/drivers/crypto/atmel-aes.c
@@ -1341,6 +1341,7 @@ static int atmel_aes_probe(struct platform_device *pdev)
platform_set_drvdata(pdev, aes_dd);

+ spin_lock_init(&aes_dd->lock);

tasklet_init(&aes_dd->done_task, atmel_aes_done_task,
(unsigned long)aes_dd);

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