From 0e37d4c2c631b0e94b7e891a5b37650d9bbd143c Mon Sep 17 00:00:00 2001
From: Christophe Ricard <christophe.ricard@gmail.com>
Date: Thu, 21 Jan 2016 23:19:13 +0100
Subject: tpm: Fix fault in case CONFIG_DM_TPM is set without any TPM

In case CONFIG_DM_TPM was set without any TPM chipset configured a fault
was generated (NULL pointer access).

Reviewed-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Christophe Ricard <christophe-h.ricard@st.com>
---
 lib/tpm.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'lib')

diff --git a/lib/tpm.c b/lib/tpm.c
index 8a62216274..f428d454fb 100644
--- a/lib/tpm.c
+++ b/lib/tpm.c
@@ -262,7 +262,7 @@ int tpm_init(void)
 	struct udevice *dev;
 
 	err = uclass_first_device(UCLASS_TPM, &dev);
-	if (err)
+	if (err || !dev)
 		return err;
 	return tpm_open(dev);
 }
-- 
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