From 71202f35d1049d82925518ff9adbc2aa4ed4a955 Mon Sep 17 00:00:00 2001
From: Troy Kisky <troy.kisky@boundarydevices.com>
Date: Thu, 21 Aug 2014 15:24:23 -0700
Subject: caamhash: wait for driver data available

---
 drivers/crypto/caam/caamhash.c | 13 +++++++++++--
 1 file changed, 11 insertions(+), 2 deletions(-)

diff --git a/drivers/crypto/caam/caamhash.c b/drivers/crypto/caam/caamhash.c
index f90449943e31..def0b51cd4ae 100644
--- a/drivers/crypto/caam/caamhash.c
+++ b/drivers/crypto/caam/caamhash.c
@@ -2161,8 +2161,17 @@ static int __init caam_algapi_hash_init(void)
 		return -ENODEV;
 	}
 	ctrldev = &pdev->dev;
-	priv = dev_get_drvdata(ctrldev);
-
+	for (;;) {
+		priv = dev_get_drvdata(ctrldev);
+		if (priv)
+			break;
+		if (i++ > 10) {
+			of_node_put(dev_node);
+			return -ENODEV;
+		}
+		pr_info("waiting for driver to load\n");
+		msleep(100);
+	}
 	INIT_LIST_HEAD(&priv->hash_list);
 
 	atomic_set(&priv->tfm_count, -1);
-- 
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