1 files changed, 12 insertions, 0 deletions

diff --git a/arch/x86/kernel/pmem.c b/arch/x86/kernel/pmem.c
index 4f00b63d7ff3..14415aff1813 100644
--- a/arch/x86/kernel/pmem.c
+++ b/arch/x86/kernel/pmem.c
@@ -4,10 +4,22 @@
  */
 #include <linux/platform_device.h>
 #include <linux/module.h>
+#include <linux/ioport.h>
+
+static int found(u64 start, u64 end, void *data)
+{
+        return 1;
+}
 
 static __init int register_e820_pmem(void)
 {
+        char *pmem = "Persistent Memory (legacy)";
         struct platform_device *pdev;
+        int rc;
+
+        rc = walk_iomem_res(pmem, IORESOURCE_MEM, 0, -1, NULL, found);
+        if (rc <= 0)
+                return 0;
 
         /*
          * See drivers/nvdimm/e820.c for the implementation, this is