Merge commit 'origin/master' into next

[linux-2.6-block.git] / arch / powerpc / platforms / pseries / xics.c

diff --git a/arch/powerpc/platforms/pseries/xics.c b/arch/powerpc/platforms/pseries/xics.c
index e9a52ec05a0f8d05412c274d3741175aabe0bfb4..63eaa8a220c002de5e02ea16eaca791d7b90905e 100644 (file)
--- a/arch/powerpc/platforms/pseries/xics.c
+++ b/arch/powerpc/platforms/pseries/xics.c
@@ -784,9 +784,13 @@ static void xics_set_cpu_priority(unsigned char cppr)
 {
        struct xics_cppr *os_cppr = &__get_cpu_var(xics_cppr);
 
-       BUG_ON(os_cppr->index != 0);
+       /*
+        * we only really want to set the priority when there's
+        * just one cppr value on the stack
+        */
+       WARN_ON(os_cppr->index != 0);
 
-       os_cppr->stack[os_cppr->index] = cppr;
+       os_cppr->stack[0] = cppr;
 
        if (firmware_has_feature(FW_FEATURE_LPAR))
                lpar_cppr_info(cppr);
@@ -821,8 +825,14 @@ void xics_setup_cpu(void)
 
 void xics_teardown_cpu(void)
 {
+       struct xics_cppr *os_cppr = &__get_cpu_var(xics_cppr);
        int cpu = smp_processor_id();
 
+       /*
+        * we have to reset the cppr index to 0 because we're
+        * not going to return from the IPI
+        */
+       os_cppr->index = 0;
        xics_set_cpu_priority(0);
 
        /* Clear any pending IPI request */