[PATCH 05/10] crypto: atmel-sha: initialize spinlock in probe

From: Leilei Zhao
Date: Tue Apr 07 2015 - 05:49:35 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-sha.c | 1 +
1 file changed, 1 insertion(+)

diff --git a/drivers/crypto/atmel-sha.c b/drivers/crypto/atmel-sha.c
index 9fb8af1..6430f6a 100644
--- a/drivers/crypto/atmel-sha.c
+++ b/drivers/crypto/atmel-sha.c
@@ -1367,6 +1367,7 @@ static int atmel_sha_probe(struct platform_device *pdev)
platform_set_drvdata(pdev, sha_dd);

+ spin_lock_init(&sha_dd->lock);

tasklet_init(&sha_dd->done_task, atmel_sha_done_task,
(unsigned long)sha_dd);

To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/