diff --git a/fs/pstore/ram.c b/fs/pstore/ram.c
index fefe3d391d3a..5f904558e9db 100644
--- a/fs/pstore/ram.c
+++ b/fs/pstore/ram.c
@@ -21,6 +21,7 @@
 #include <linux/pstore_ram.h>
 #include <linux/of.h>
 #include <linux/of_address.h>
+#include <linux/of_reserved_mem.h>
 #include "internal.h"
 
 #define RAMOOPS_KERNMSG_HDR "===="
@@ -633,21 +634,21 @@ static int ramoops_parse_dt(struct platform_device *pdev,
 {
 	struct device_node *of_node = pdev->dev.of_node;
 	struct device_node *parent_node;
-	struct resource *res;
+	struct reserved_mem *rmem;
 	u32 value;
 	int ret;
 
 	dev_dbg(&pdev->dev, "using Device Tree\n");
 
-	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	if (!res) {
+	rmem = of_reserved_mem_lookup(of_node);
+	if (!rmem) {
 		dev_err(&pdev->dev,
 			"failed to locate DT /reserved-memory resource\n");
 		return -EINVAL;
 	}
 
-	pdata->mem_size = resource_size(res);
-	pdata->mem_address = res->start;
+	pdata->mem_size = rmem->size;
+	pdata->mem_address = rmem->base;
 	/*
 	 * Setting "unbuffered" is deprecated and will be ignored if
 	 * "mem_type" is also specified.