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>
diff --git a/lib/tpm.c b/lib/tpm.c
index 8a62216..f428d45 100644
--- a/lib/tpm.c
+++ b/lib/tpm.c
@@ -262,7 +262,7 @@
struct udevice *dev;
err = uclass_first_device(UCLASS_TPM, &dev);
- if (err)
+ if (err || !dev)
return err;
return tpm_open(dev);
}