crypto: atmel-sha - initialize spinlock in probe

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@atmel.com>
Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

diff --git a/drivers/crypto/atmel-sha.c b/drivers/crypto/atmel-sha.c
index b093862eebf397be7584fe65422bcbd5ac787498..08dfddfcffbb72866fd497218ded7841857d18cf 100644 (file)
--- 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);
 
        INIT_LIST_HEAD(&sha_dd->list);
+       spin_lock_init(&sha_dd->lock);
 
        tasklet_init(&sha_dd->done_task, atmel_sha_done_task,
                                        (unsigned long)sha_dd);