nvmem: meson-efuse: add error message on user_max failure.

jbrun3t · gregkh · commit 8649dbe58d35 · 2018-12-06T15:45:45.000+01:00
Add an explicit error message when SM_EFUSE_USER_MAX command fails

Signed-off-by: Jerome Brunet &lt;jbrunet@baylibre.com&gt;
Signed-off-by: Srinivas Kandagatla &lt;srinivas.kandagatla@linaro.org&gt;
Signed-off-by: Greg Kroah-Hartman &lt;gregkh@linuxfoundation.org&gt;
diff --git a/drivers/nvmem/meson-efuse.c b/drivers/nvmem/meson-efuse.c
@@ -48,8 +48,10 @@ static int meson_efuse_probe(struct platform_device *pdev)
 	struct nvmem_config *econfig;
 	unsigned int size;
 
-	if (meson_sm_call(SM_EFUSE_USER_MAX, &size, 0, 0, 0, 0, 0) < 0)
+	if (meson_sm_call(SM_EFUSE_USER_MAX, &size, 0, 0, 0, 0, 0) < 0) {
+		dev_err(dev, "failed to get max user");
 		return -EINVAL;
+	}
 
 	econfig = devm_kzalloc(dev, sizeof(*econfig), GFP_KERNEL);
 	if (!econfig)
