genirq: Make warning in handle_percpu_event useful

The WARN_ON_ONCE in handle_percpu_event() which emits a warning when
an action handler returns with interrupts enabled is not really
useful. It does not reveal the interrupt number and handler function
which caused it. Make it WARN_ONCE() and add the information.

Reported-by: Tony Luck <tony.luck@intel.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

1 files changed, 2 insertions, 1 deletions

diff --git a/kernel/irq/handle.c b/kernel/irq/handle.c
index e099e9e9de0..b110c835e07 100644
--- a/kernel/irq/handle.c
+++ b/kernel/irq/handle.c
@@ -64,7 +64,8 @@ handle_irq_event_percpu(struct irq_desc *desc, struct irqaction *action)
                 res = action->handler(irq, action->dev_id);
                 trace_irq_handler_exit(irq, action, res);
 
-                if (WARN_ON_ONCE(!irqs_disabled()))
+                if (WARN_ONCE(!irqs_disabled(),"irq %u handler %pF enabled interrupts\n",
+                              irq, action->handler))
                         local_irq_disable();
 
                 switch (res) {