soc: fsl: guts: allocate soc_dev_attr on the heap

This is the last global static variable. Drop it and allocate the memory
on the heap instead.
Signed-off-by: Michael Walle <michael@walle.cc>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

drivers/soc/fsl/guts.c

@@ -20,9 +20,6 @@ struct fsl_soc_die_attr {
 	u32	mask;
 };
 
-static struct soc_device_attribute soc_dev_attr;
-
-
 /* SoC die attribute definition for QorIQ platform */
 static const struct fsl_soc_die_attr fsl_soc_die[] = {
 	/*
@@ -116,6 +113,7 @@ static const struct fsl_soc_die_attr *fsl_soc_die_match(
 static int fsl_guts_probe(struct platform_device *pdev)
 {
 	struct device_node *root, *np = pdev->dev.of_node;
+	struct soc_device_attribute *soc_dev_attr;
 	static struct soc_device *soc_dev;
 	struct device *dev = &pdev->dev;
 	const struct fsl_soc_die_attr *soc_die;
@@ -136,12 +134,16 @@ static int fsl_guts_probe(struct platform_device *pdev)
 	iounmap(regs);
 
 	/* Register soc device */
+	soc_dev_attr = devm_kzalloc(dev, sizeof(*soc_dev_attr), GFP_KERNEL);
+	if (!soc_dev_attr)
+		return -ENOMEM;
+
 	root = of_find_node_by_path("/");
 	if (of_property_read_string(root, "model", &machine))
 		of_property_read_string_index(root, "compatible", 0, &machine);
 	if (machine) {
-		soc_dev_attr.machine = devm_kstrdup(dev, machine, GFP_KERNEL);
-		if (!soc_dev_attr.machine) {
+		soc_dev_attr->machine = devm_kstrdup(dev, machine, GFP_KERNEL);
+		if (!soc_dev_attr->machine) {
 			of_node_put(root);
 			return -ENOMEM;
 		}
@@ -150,30 +152,30 @@ static int fsl_guts_probe(struct platform_device *pdev)
 
 	soc_die = fsl_soc_die_match(svr, fsl_soc_die);
 	if (soc_die) {
-		soc_dev_attr.family = devm_kasprintf(dev, GFP_KERNEL,
+		soc_dev_attr->family = devm_kasprintf(dev, GFP_KERNEL,
 						      "QorIQ %s", soc_die->die);
 	} else {
-		soc_dev_attr.family = devm_kasprintf(dev, GFP_KERNEL, "QorIQ");
+		soc_dev_attr->family = devm_kasprintf(dev, GFP_KERNEL, "QorIQ");
 	}
-	if (!soc_dev_attr.family)
+	if (!soc_dev_attr->family)
 		return -ENOMEM;
-	soc_dev_attr.soc_id = devm_kasprintf(dev, GFP_KERNEL,
+	soc_dev_attr->soc_id = devm_kasprintf(dev, GFP_KERNEL,
 					      "svr:0x%08x", svr);
-	if (!soc_dev_attr.soc_id)
+	if (!soc_dev_attr->soc_id)
 		return -ENOMEM;
-	soc_dev_attr.revision = devm_kasprintf(dev, GFP_KERNEL, "%d.%d",
+	soc_dev_attr->revision = devm_kasprintf(dev, GFP_KERNEL, "%d.%d",
 						(svr >>  4) & 0xf, svr & 0xf);
-	if (!soc_dev_attr.revision)
+	if (!soc_dev_attr->revision)
 		return -ENOMEM;
 
-	soc_dev = soc_device_register(&soc_dev_attr);
+	soc_dev = soc_device_register(soc_dev_attr);
 	if (IS_ERR(soc_dev))
 		return PTR_ERR(soc_dev);
 
-	pr_info("Machine: %s\n", soc_dev_attr.machine);
-	pr_info("SoC family: %s\n", soc_dev_attr.family);
+	pr_info("Machine: %s\n", soc_dev_attr->machine);
+	pr_info("SoC family: %s\n", soc_dev_attr->family);
 	pr_info("SoC ID: %s, Revision: %s\n",
-		soc_dev_attr.soc_id, soc_dev_attr.revision);
+		soc_dev_attr->soc_id, soc_dev_attr->revision);
 	return 0;
 }