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, 9 insertions, 7 deletions

diff --git a/kernel/irq/chip.c b/kernel/irq/chip.c
index 34245e7d1213..075385549dcd 100644
--- a/kernel/irq/chip.c
+++ b/kernel/irq/chip.c
@@ -383,7 +383,8 @@ void handle_nested_irq(unsigned int irq)
         if (unlikely(!action || (desc->status & IRQ_DISABLED)))
                 goto out_unlock;
 
-        desc->status |= IRQ_INPROGRESS;
+        irq_compat_set_progress(desc);
+        desc->istate |= IRQS_INPROGRESS;
         raw_spin_unlock_irq(&desc->lock);
 
         action_ret = action->thread_fn(action->irq, action->dev_id);
@@ -391,7 +392,8 @@ void handle_nested_irq(unsigned int irq)
                 note_interrupt(irq, desc, action_ret);
 
         raw_spin_lock_irq(&desc->lock);
-        desc->status &= ~IRQ_INPROGRESS;
+        desc->istate &= ~IRQS_INPROGRESS;
+        irq_compat_clr_progress(desc);
 
 out_unlock:
         raw_spin_unlock_irq(&desc->lock);
@@ -422,7 +424,7 @@ handle_simple_irq(unsigned int irq, struct irq_desc *desc)
 {
         raw_spin_lock(&desc->lock);
 
-        if (unlikely(desc->status & IRQ_INPROGRESS))
+        if (unlikely(desc->istate & IRQS_INPROGRESS))
                 if (!irq_check_poll(desc))
                         goto out_unlock;
 
@@ -454,7 +456,7 @@ handle_level_irq(unsigned int irq, struct irq_desc *desc)
         raw_spin_lock(&desc->lock);
         mask_ack_irq(desc);
 
-        if (unlikely(desc->status & IRQ_INPROGRESS))
+        if (unlikely(desc->istate & IRQS_INPROGRESS))
                 if (!irq_check_poll(desc))
                         goto out_unlock;
 
@@ -492,7 +494,7 @@ handle_fasteoi_irq(unsigned int irq, struct irq_desc *desc)
 {
         raw_spin_lock(&desc->lock);
 
-        if (unlikely(desc->status & IRQ_INPROGRESS))
+        if (unlikely(desc->istate & IRQS_INPROGRESS))
                 if (!irq_check_poll(desc))
                         goto out;
 
@@ -542,8 +544,8 @@ handle_edge_irq(unsigned int irq, struct irq_desc *desc)
          * we shouldn't process the IRQ. Mark it pending, handle
          * the necessary masking and go out
          */
-        if (unlikely((desc->status & (IRQ_INPROGRESS | IRQ_DISABLED)) ||
-                    !desc->action)) {
+        if (unlikely((desc->istate & (IRQS_INPROGRESS) ||
+                      (desc->status & IRQ_DISABLED) || !desc->action))) {
                 if (!irq_check_poll(desc)) {
                         desc->status |= IRQ_PENDING;
                         mask_ack_irq(desc);