firewire: ohci: flush MMIO writes in the interrupt handler
Make sure that interrupt event clear bit writes are executed before the
interrupt handler returns.
Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
diff --git a/drivers/firewire/ohci.c b/drivers/firewire/ohci.c
index 3775364..276324d 100644
--- a/drivers/firewire/ohci.c
+++ b/drivers/firewire/ohci.c
@@ -1856,7 +1856,8 @@
spin_lock(&ohci->lock);
update_bus_time(ohci);
spin_unlock(&ohci->lock);
- }
+ } else
+ flush_writes(ohci);
return IRQ_HANDLED;
}