1 files changed, 13 insertions, 3 deletions

diff --git a/arch/powerpc/sysdev/cpm_common.c b/arch/powerpc/sysdev/cpm_common.c
index cb7df2dce44f..9b75d164bdf9 100644
--- a/arch/powerpc/sysdev/cpm_common.c
+++ b/arch/powerpc/sysdev/cpm_common.c
@@ -85,9 +85,13 @@ int __init cpm_muram_init(void)
 
         np = of_find_compatible_node(NULL, NULL, "fsl,cpm-muram-data");
         if (!np) {
-                printk(KERN_ERR "Cannot find CPM muram data node");
-                ret = -ENODEV;
-                goto out;
+                /* try legacy bindings */
+                np = of_find_node_by_name(NULL, "data-only");
+                if (!np) {
+                        printk(KERN_ERR "Cannot find CPM muram data node");
+                        ret = -ENODEV;
+                        goto out;
+                }
         }
 
         muram_pbase = of_translate_address(np, zero);
@@ -189,6 +193,12 @@ void __iomem *cpm_muram_addr(unsigned long offset)
 }
 EXPORT_SYMBOL(cpm_muram_addr);
 
+unsigned long cpm_muram_offset(void __iomem *addr)
+{
+        return addr - (void __iomem *)muram_vbase;
+}
+EXPORT_SYMBOL(cpm_muram_offset);
+
 /**
  * cpm_muram_dma - turn a muram virtual address into a DMA address
  * @offset: virtual address from cpm_muram_addr() to convert