1 files changed, 8 insertions, 2 deletions

diff --git a/arch/powerpc/kernel/rtas.c b/arch/powerpc/kernel/rtas.c
index fdfe14c4bdef..ee4c7609b649 100644
--- a/arch/powerpc/kernel/rtas.c
+++ b/arch/powerpc/kernel/rtas.c
@@ -46,6 +46,7 @@ EXPORT_SYMBOL(rtas);
 
 struct rtas_suspend_me_data {
         atomic_t working; /* number of cpus accessing this struct */
+        atomic_t done;
         int token; /* ibm,suspend-me */
         int error;
         struct completion *complete; /* wait on this until working == 0 */
@@ -689,7 +690,7 @@ static int ibm_suspend_me_token = RTAS_UNKNOWN_SERVICE;
 #ifdef CONFIG_PPC_PSERIES
 static void rtas_percpu_suspend_me(void *info)
 {
-        long rc;
+        long rc = H_SUCCESS;
         unsigned long msr_save;
         int cpu;
         struct rtas_suspend_me_data *data =
@@ -701,7 +702,8 @@ static void rtas_percpu_suspend_me(void *info)
         msr_save = mfmsr();
         mtmsr(msr_save & ~(MSR_EE));
 
-        rc = plpar_hcall_norets(H_JOIN);
+        while (rc == H_SUCCESS && !atomic_read(&data->done))
+                rc = plpar_hcall_norets(H_JOIN);
 
         mtmsr(msr_save);
 
@@ -724,6 +726,9 @@ static void rtas_percpu_suspend_me(void *info)
                        smp_processor_id(), rc);
                 data->error = rc;
         }
+
+        atomic_set(&data->done, 1);
+
         /* This cpu did the suspend or got an error; in either case,
          * we need to prod all other other cpus out of join state.
          * Extra prods are harmless.
@@ -766,6 +771,7 @@ static int rtas_ibm_suspend_me(struct rtas_args *args)
         }
 
         atomic_set(&data.working, 0);
+        atomic_set(&data.done, 0);
         data.token = rtas_token("ibm,suspend-me");
         data.error = 0;
         data.complete = &done;