1 files changed, 22 insertions, 0 deletions
diff --git a/backport/compat/backport-4.12.c b/backport/compat/backport-4.12.c
new file mode 100644
index 00000000..413ae7f1
--- /dev/null
+++ b/backport/compat/backport-4.12.c
@@ -0,0 +1,22 @@
+#ifdef CONFIG_OF
+#include <linux/of_device.h>
+#endif
+
+#ifdef CONFIG_OF
+/**
+ * of_device_modalias - Fill buffer with newline terminated modalias string
+ */
+ssize_t bp_of_device_modalias(struct device *dev, char *str, ssize_t len)
+{
+	ssize_t sl = of_device_get_modalias(dev, str, len - 2);
+	if (sl < 0)
+		return sl;
+	if (sl > len - 2)
+		return -ENOMEM;
+
+	str[sl++] = '\n';
+	str[sl] = 0;
+	return sl;
+}
+EXPORT_SYMBOL_GPL(bp_of_device_modalias);
+#endif