[PATCH v2 0/2] da8xx: fix section mismatch in new drivers

[PATCH v2 0/2] da8xx: fix section mismatch in new drivers

[Bartosz Golaszewski]

Sekhar noticed there's a section mismatch in the da8xx-mstpri and
da8xx-ddrctl drivers. This is caused by calling
of_flat_dt_get_machine_name() which has an __init annotation.

This series addresses this issue by open coding routines that return
the machine compatible string in both drivers. Once a general function
for that in of/base is merged, we'll remove them.

v1 -> v2:
- drop patch [1/3] from v1
- introduce internal routines in the drivers instead of a general
  function in of/base.c

Bartosz Golaszewski (2):
  bus: da8xx-mstpri: drop the call to of_flat_dt_get_machine_name()
  memory: da8xx-ddrctl: drop the call to of_flat_dt_get_machine_name()

 drivers/bus/da8xx-mstpri.c    | 22 ++++++++++++++++++++--
 drivers/memory/da8xx-ddrctl.c | 22 ++++++++++++++++++++--
 2 files changed, 40 insertions(+), 4 deletions(-)

-- 
2.9.3

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[PATCH v2 1/2] bus: da8xx-mstpri: drop the call to of_flat_dt_get_machine_name()

[Bartosz Golaszewski]

In order to avoid a section mismatch use a locally implemented routine
instead of of_flat_dt_get_machine_name() when printing the error
message.

Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
---
 drivers/bus/da8xx-mstpri.c | 22 ++++++++++++++++++++--
 1 file changed, 20 insertions(+), 2 deletions(-)

diff --git a/drivers/bus/da8xx-mstpri.c b/drivers/bus/da8xx-mstpri.c
index 85f0b53..bd38170 100644
--- a/drivers/bus/da8xx-mstpri.c
+++ b/drivers/bus/da8xx-mstpri.c
@@ -16,7 +16,6 @@
 #include <linux/platform_device.h>
 #include <linux/io.h>
 #include <linux/regmap.h>
-#include <linux/of_fdt.h>
 
 /*
  * REVISIT: Linux doesn't have a good framework for the kind of performance
@@ -190,6 +189,25 @@ static const struct da8xx_mstpri_board_priorities da8xx_mstpri_board_confs[] = {
 	},
 };
 
+/*
+ * FIXME Remove this function once of/base gets a general routine for getting
+ * the machine model/compatible string.
+ */
+static const char *da8xx_mstpri_machine_get_compatible(void)
+{
+	struct device_node *root;
+	const char *compatible;
+	int ret = -1;
+
+	root = of_find_node_by_path("/");
+	if (root) {
+		ret = of_property_read_string(root, "compatible", &compatible);
+		of_node_put(root);
+	}
+
+	return ret ? NULL : compatible;
+}
+
 static const struct da8xx_mstpri_board_priorities *
 da8xx_mstpri_get_board_prio(void)
 {
@@ -227,7 +245,7 @@ static int da8xx_mstpri_probe(struct platform_device *pdev)
 	prio_list = da8xx_mstpri_get_board_prio();
 	if (!prio_list) {
 		dev_err(dev, "no master priotities defined for board '%s'\n",
-			of_flat_dt_get_machine_name());
+			da8xx_mstpri_machine_get_compatible());
 		return -EINVAL;
 	}
 
-- 
2.9.3

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[PATCH v2 2/2] memory: da8xx-ddrctl: drop the call to of_flat_dt_get_machine_name()

[Bartosz Golaszewski]

In order to avoid a section mismatch use a locally implemented routine
instead of of_flat_dt_get_machine_name() when printing the error
message.

Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
---
 drivers/memory/da8xx-ddrctl.c | 22 ++++++++++++++++++++--
 1 file changed, 20 insertions(+), 2 deletions(-)

diff --git a/drivers/memory/da8xx-ddrctl.c b/drivers/memory/da8xx-ddrctl.c
index a20e7bb..ee0c266 100644
--- a/drivers/memory/da8xx-ddrctl.c
+++ b/drivers/memory/da8xx-ddrctl.c
@@ -14,7 +14,6 @@
 #include <linux/module.h>
 #include <linux/of.h>
 #include <linux/of_device.h>
-#include <linux/of_fdt.h>
 #include <linux/platform_device.h>
 #include <linux/io.h>
 
@@ -71,6 +70,25 @@ static const struct da8xx_ddrctl_board_settings da8xx_ddrctl_board_confs[] = {
 	},
 };
 
+/*
+ * FIXME Remove this function once of/base gets a general routine for getting
+ * the machine model/compatible string.
+ */
+static const char *da8xx_ddrctl_machine_get_compatible(void)
+{
+	struct device_node *root;
+	const char *compatible;
+	int ret = -1;
+
+	root = of_find_node_by_path("/");
+	if (root) {
+		ret = of_property_read_string(root, "compatible", &compatible);
+		of_node_put(root);
+	}
+
+	return ret ? NULL : compatible;
+}
+
 static const struct da8xx_ddrctl_config_knob *
 da8xx_ddrctl_match_knob(const struct da8xx_ddrctl_setting *setting)
 {
@@ -118,7 +136,7 @@ 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_machine_get_compatible());
 		return -EINVAL;
 	}
 
-- 
2.9.3

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