1 files changed, 6 insertions, 1 deletions

diff --git a/arch/powerpc/platforms/powernv/opal-nvram.c b/arch/powerpc/platforms/powernv/opal-nvram.c
index ba2ff06a2c98..1bceb95f422d 100644
--- a/arch/powerpc/platforms/powernv/opal-nvram.c
+++ b/arch/powerpc/platforms/powernv/opal-nvram.c
@@ -11,6 +11,7 @@
 
 #define DEBUG
 
+#include <linux/delay.h>
 #include <linux/kernel.h>
 #include <linux/init.h>
 #include <linux/of.h>
@@ -56,8 +57,12 @@ static ssize_t opal_nvram_write(char *buf, size_t count, loff_t *index)
 
         while (rc == OPAL_BUSY || rc == OPAL_BUSY_EVENT) {
                 rc = opal_write_nvram(__pa(buf), count, off);
-                if (rc == OPAL_BUSY_EVENT)
+                if (rc == OPAL_BUSY_EVENT) {
+                        msleep(OPAL_BUSY_DELAY_MS);
                         opal_poll_events(NULL);
+                } else if (rc == OPAL_BUSY) {
+                        msleep(OPAL_BUSY_DELAY_MS);
+                }
         }
 
         if (rc)