genirq: Add IRQ_INPROGRESS to core

We need to maintain the flag for now in both fields status and istate.
Add a CONFIG_GENERIC_HARDIRQS_NO_COMPAT switch to allow testing w/o
the status one. Wrap the access to status IRQ_INPROGRESS in a inline
which can be turned of with CONFIG_GENERIC_HARDIRQS_NO_COMPAT along
with the define.

There is no reason that anything outside of core looks at this. That
needs some modifications, but we'll get there.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

1 files changed, 4 insertions, 2 deletions

diff --git a/kernel/irq/handle.c b/kernel/irq/handle.c
index ff40e0f5e2e2..d4ae0b1ccc00 100644
--- a/kernel/irq/handle.c
+++ b/kernel/irq/handle.c
@@ -123,13 +123,15 @@ irqreturn_t handle_irq_event(struct irq_desc *desc)
         irqreturn_t ret;
 
         desc->status &= ~IRQ_PENDING;
-        desc->status |= IRQ_INPROGRESS;
+        irq_compat_set_progress(desc);
+        desc->istate |= IRQS_INPROGRESS;
         raw_spin_unlock(&desc->lock);
 
         ret = handle_irq_event_percpu(desc, action);
 
         raw_spin_lock(&desc->lock);
-        desc->status &= ~IRQ_INPROGRESS;
+        desc->istate &= ~IRQS_INPROGRESS;
+        irq_compat_clr_progress(desc);
         return ret;
 }