Update from upstream with manual merge of Yasunori Goto's

changes to swiotlb.c made in commit 281dd25cdc0d6903929b79183816d151ea626341
since this file has been moved from arch/ia64/lib/swiotlb.c to
lib/swiotlb.c

Signed-off-by: Tony Luck <tony.luck@intel.com>

1 files changed, 5 insertions, 0 deletions

diff --git a/arch/ia64/kernel/mca.c b/arch/ia64/kernel/mca.c
index 6dc726ad7137..d0a5106fba24 100644
--- a/arch/ia64/kernel/mca.c
+++ b/arch/ia64/kernel/mca.c
@@ -1016,6 +1016,11 @@ ia64_mca_cmc_int_handler(int cmc_irq, void *arg, struct pt_regs *ptregs)
 
                         cmc_polling_enabled = 1;
                         spin_unlock(&cmc_history_lock);
+                        /* If we're being hit with CMC interrupts, we won't
+                         * ever execute the schedule_work() below.  Need to
+                         * disable CMC interrupts on this processor now.
+                         */
+                        ia64_mca_cmc_vector_disable(NULL);
                         schedule_work(&cmc_disable_work);
 
                         /*