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genirq: Warn when handler enables interrupts

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We run all handlers with interrupts disabled and expect them not to
enable them. Warn when we catch one who does.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
This commit is contained in:
Thomas Gleixner 2011-02-02 23:58:19 +01:00
parent 1082687e8d
commit b738a50a20
1 changed files with 3 additions and 1 deletions
repo.diff.show_diff_stats Download patch file Download diff file Expand all files Collapse all files

4
kernel/irq/handle.c
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@ -68,6 +68,9 @@ irqreturn_t handle_IRQ_event(unsigned int irq, struct irqaction *action)
ret = action->handler(irq, action->dev_id); ret = action->handler(irq, action->dev_id);
trace_irq_handler_exit(irq, action, ret); trace_irq_handler_exit(irq, action, ret);
if (WARN_ON_ONCE(!irqs_disabled()))
local_irq_disable();
switch (ret) { switch (ret) {
case IRQ_WAKE_THREAD: case IRQ_WAKE_THREAD:
/* /*
@ -114,7 +117,6 @@ irqreturn_t handle_IRQ_event(unsigned int irq, struct irqaction *action)
if (status & IRQF_SAMPLE_RANDOM) if (status & IRQF_SAMPLE_RANDOM)
add_interrupt_randomness(irq); add_interrupt_randomness(irq);
local_irq_disable();
return retval; return retval;
} }