From: Leilei Zhao <leilei.zhao@atmel.com>
Date: Tue, 7 Apr 2015 09:45:06 +0000 (+0800)
Subject: crypto: atmel-sha - initialize spinlock in probe
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=62728e82026c90af004dd2c328c1314f2f3e6b58;p=linux-beck.git

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 b093862eebf3..08dfddfcffbb 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);
 
 	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);