ia64: Remove superfluous SMP function call

Since commit 3b9d6da67e11 ("cpu/hotplug: Fix rollback during error-out
in __cpu_disable()") it is ensured that callbacks of CPU_ONLINE and
CPU_DOWN_PREPARE are processed on the hotplugged CPU. Due to this SMP
function calls are no longer required.

Replace smp_call_function_single() with a direct call to
ia64_mca_cmc_vector_adjust(). The function itselfs handles disable and
enable interrupts, therefore the smp_call_function_single() calling
convention is not preserved.

Cc: Fenghua Yu <fenghua.yu@intel.com>
Cc: linux-ia64@vger.kernel.org
Signed-off-by: Anna-Maria Gleixner <anna-maria@linutronix.de>
Signed-off-by: Tony Luck <tony.luck@intel.com>

1 files changed, 1 insertions, 4 deletions

diff --git a/arch/ia64/kernel/mca.c b/arch/ia64/kernel/mca.c
index 2889412e03eb..07a4e32ae96a 100644
--- a/arch/ia64/kernel/mca.c
+++ b/arch/ia64/kernel/mca.c
@@ -1904,13 +1904,10 @@ static int mca_cpu_callback(struct notifier_block *nfb,
                                       unsigned long action,
                                       void *hcpu)
 {
-        int hotcpu = (unsigned long) hcpu;
-
         switch (action) {
         case CPU_ONLINE:
         case CPU_ONLINE_FROZEN:
-                smp_call_function_single(hotcpu, ia64_mca_cmc_vector_adjust,
-                                         NULL, 0);
+                ia64_mca_cmc_vector_adjust(NULL);
                 break;
         }
         return NOTIFY_OK;