On Monday 31 October 2016 08:15 PM, Bartosz Golaszewski wrote:

+static int da8xx_ddrctl_probe(struct platform_device *pdev)
+{
+	const struct da8xx_ddrctl_config_knob *knob;
+	const struct da8xx_ddrctl_setting *setting;
+	struct device_node *node;
+	struct resource *res;
+	void __iomem *ddrctl;
+	struct device *dev;
+	u32 reg;
+
+	dev = &pdev->dev;
+	node = dev->of_node;
+
+	setting = da8xx_ddrctl_get_board_settings();
+	if (!setting) {
+		dev_err(dev, "no settings for board '%s'\n",
+			of_flat_dt_get_machine_name());
+		return -EINVAL;
+	}

This causes a section mismatch because of_flat_dt_get_machine_name() 
has an __init annotation. I did not notice that before, sorry.

It can be fixed with a patch like below:

---8<---

diff --git a/drivers/memory/da8xx-ddrctl.c b/drivers/memory/da8xx-ddrctl.c
index a20e7bbbcbe0..9ca5aab3ac54 100644
--- a/drivers/memory/da8xx-ddrctl.c
+++ b/drivers/memory/da8xx-ddrctl.c

@@ -102,6 +102,18 @@ static const struct da8xx_ddrctl_setting *da8xx_ddrctl_get_board_settings(void)
 	return NULL;
 }
 
+static const char* da8xx_ddrctl_get_machine_name(void)
+{
+	const char *str;
+	int ret;
+
+	ret = of_property_read_string(of_root, "model", &str);
+	if (ret)
+		ret = of_property_read_string(of_root, "compatible", &str);
+
+	return str;
+}
+
 static int da8xx_ddrctl_probe(struct platform_device *pdev)
 {
 	const struct da8xx_ddrctl_config_knob *knob;

@@ -118,7 +130,7 @@ static int da8xx_ddrctl_probe(struct platform_device *pdev)
 	setting = da8xx_ddrctl_get_board_settings();
 	if (!setting) {
 		dev_err(dev, "no settings for board '%s'\n",
-			of_flat_dt_get_machine_name());
+			da8xx_ddrctl_get_machine_name());
 		return -EINVAL;
 	}
---8<--- 

A similar fix is required for the other driver in this series (patch 
2/5). I need some advise on whether I should introduce a common 
function to get the machine name post kernel boot-up (I cannot see an 
existing one). If yes, any advise on which file it should go into?

Thanks,
Sekhar