From 4e614179832ee15663e3486770263f9b3309ac7d Mon Sep 17 00:00:00 2001
From: Alex Porosanu <alexandru.porosanu@freescale.com>
Date: Tue, 19 May 2015 18:17:33 +0300
Subject: crypto: caam - fix SEC ERA reading
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In order to ensure that the SEC ERA property is
properly read from DTS,  of_property_read* functions need
to be used.

Signed-off-by: Alex Porosanu <alexandru.porosanu@freescale.com>
Signed-off-by: Horia Geantă <horia.geanta@freescale.com>
Change-Id: I3fe958ca9b0ab91c2dbd089d1b2f090042cc3fd0
Reviewed-on: http://git.am.freescale.net:8181/39374
Tested-by: Review Code-CDREVIEW <CDREVIEW@freescale.com>
Reviewed-by: Zhengxiong Jin <Jason.Jin@freescale.com>

diff --git a/drivers/crypto/caam/ctrl.c b/drivers/crypto/caam/ctrl.c
index 1d77f5a..0359c71 100644
--- a/drivers/crypto/caam/ctrl.c
+++ b/drivers/crypto/caam/ctrl.c
@@ -388,14 +388,14 @@ static void kick_trng(struct device *dev, int ent_delay)
 int caam_get_era(void)
 {
 	struct device_node *caam_node;
-	for_each_compatible_node(caam_node, NULL, "fsl,sec-v4.0") {
-		const uint32_t *prop = (uint32_t *)of_get_property(caam_node,
-				"fsl,sec-era",
-				NULL);
-		return prop ? *prop : -ENOTSUPP;
-	}
+	int ret;
+	u32 prop;
+
+	caam_node = of_find_compatible_node(NULL, NULL, "fsl,sec-v4.0");
+	ret = of_property_read_u32(caam_node, "fsl,sec-era", &prop);
+	of_node_put(caam_node);
 
-	return -ENOTSUPP;
+	return IS_ERR_VALUE(ret) ? -ENOTSUPP : prop;
 }
 EXPORT_SYMBOL(caam_get_era);
 
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