crypto: atmel-tdes - initialize spinlock in probe
authorLeilei Zhao <leilei.zhao@atmel.com>
Tue, 7 Apr 2015 09:45:08 +0000 (17:45 +0800)
committerHerbert Xu <herbert@gondor.apana.org.au>
Wed, 8 Apr 2015 14:20:03 +0000 (22:20 +0800)
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>
drivers/crypto/atmel-tdes.c

index 8495b8959d0b458ad594370706eeb078965204d4..ca2999709eb4cf6fa38ca0096a482659a52c1f21 100644 (file)
@@ -1370,6 +1370,7 @@ static int atmel_tdes_probe(struct platform_device *pdev)
        platform_set_drvdata(pdev, tdes_dd);
 
        INIT_LIST_HEAD(&tdes_dd->list);
+       spin_lock_init(&tdes_dd->lock);
 
        tasklet_init(&tdes_dd->done_task, atmel_tdes_done_task,
                                        (unsigned long)tdes_dd);