genirq; Add fasteoi irq_chip quirk
Some chips want irq_eoi() only called when an interrupt is actually
handled. So they have checks for INPROGRESS and DISABLED in their
irq_eoi callbacks. Add a chip flag, which allows to handle that in the
generic code. No impact on the fastpath.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
diff --git a/kernel/irq/chip.c b/kernel/irq/chip.c
index 08be5d1..1d3e25e 100644
--- a/kernel/irq/chip.c
+++ b/kernel/irq/chip.c
@@ -515,9 +515,16 @@
}
preflow_handler(desc);
handle_irq_event(desc);
-out:
+
+out_eoi:
desc->irq_data.chip->irq_eoi(&desc->irq_data);
+out_unlock:
raw_spin_unlock(&desc->lock);
+ return;
+out:
+ if (!(desc->irq_data.chip->flags & IRQCHIP_EOI_IF_HANDLED))
+ goto out_eoi;
+ goto out_unlock;
}
/**