3 files changed, 24 insertions, 5 deletions
diff --git a/arch/powerpc/kernel/rtas.c b/arch/powerpc/kernel/rtas.c
index 14353b8789d..bfd66d3a035 100644
--- a/arch/powerpc/kernel/rtas.c
+++ b/arch/powerpc/kernel/rtas.c
@@ -571,6 +571,27 @@ int rtas_set_indicator(int indicator, int index, int new_value)
 }
 EXPORT_SYMBOL(rtas_set_indicator);
 
+/*
+ * Ignoring RTAS extended delay
+ */
+int rtas_set_indicator_fast(int indicator, int index, int new_value)
+{
+	int rc;
+	int token = rtas_token("set-indicator");
+
+	if (token == RTAS_UNKNOWN_SERVICE)
+		return -ENOENT;
+
+	rc = rtas_call(token, 3, 1, NULL, indicator, index, new_value);
+
+	WARN_ON(rc == -2 || (rc >= 9900 && rc <= 9905));
+
+	if (rc < 0)
+		return rtas_error_rc(rc);
+
+	return rc;
+}
+
 void rtas_restart(char *cmd)
 {
 	if (rtas_flash_term_hook)
diff --git a/arch/powerpc/platforms/pseries/setup.c b/arch/powerpc/platforms/pseries/setup.c
index 6ebeecfd6bc..1587efc5105 100644
--- a/arch/powerpc/platforms/pseries/setup.c
+++ b/arch/powerpc/platforms/pseries/setup.c
@@ -213,8 +213,6 @@ static void pseries_lpar_enable_pmcs(void)
 {
 	unsigned long set, reset;
 
-	power4_enable_pmcs();
-
 	set = 1UL << 63;
 	reset = 0;
 	plpar_hcall_norets(H_PERFMON, set, reset);
diff --git a/arch/powerpc/platforms/pseries/xics.c b/arch/powerpc/platforms/pseries/xics.c
index c88ec63129f..253972e5479 100644
--- a/arch/powerpc/platforms/pseries/xics.c
+++ b/arch/powerpc/platforms/pseries/xics.c
@@ -447,7 +447,7 @@ void xics_setup_cpu(void)
 	 *
 	 * XXX: undo of teardown on kexec needs this too, as may hotplug
 	 */
-	rtas_set_indicator(GLOBAL_INTERRUPT_QUEUE,
+	rtas_set_indicator_fast(GLOBAL_INTERRUPT_QUEUE,
 		(1UL << interrupt_server_size) - 1 - default_distrib_server, 1);
 }
 
@@ -776,7 +776,7 @@ void xics_teardown_cpu(int secondary)
 	 * so leave the master cpu in the group.
 	 */
 	if (secondary)
-		rtas_set_indicator(GLOBAL_INTERRUPT_QUEUE,
+		rtas_set_indicator_fast(GLOBAL_INTERRUPT_QUEUE,
 				   (1UL << interrupt_server_size) - 1 -
 				   default_distrib_server, 0);
 }
@@ -793,7 +793,7 @@ void xics_migrate_irqs_away(void)
 	xics_set_cpu_priority(cpu, 0);
 
 	/* remove ourselves from the global interrupt queue */
-	status = rtas_set_indicator(GLOBAL_INTERRUPT_QUEUE,
+	status = rtas_set_indicator_fast(GLOBAL_INTERRUPT_QUEUE,
 		(1UL << interrupt_server_size) - 1 - default_distrib_server, 0);
 	WARN_ON(status < 0);