From: Leilei Zhao <leilei.zhao@atmel.com>
Date: Tue, 7 Apr 2015 09:45:08 +0000 (+0800)
Subject: crypto: atmel-tdes - initialize spinlock in probe
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=1d1b91637ce1d0968d17b0a288de557946a9494e;p=linux-beck.git

crypto: atmel-tdes - 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-tdes.c b/drivers/crypto/atmel-tdes.c
index 8495b8959d0b..ca2999709eb4 100644
--- a/drivers/crypto/atmel-tdes.c
+++ b/drivers/crypto/atmel-tdes.c
@@ -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);