diff options
| author | Edward Donovan <edward.donovan@numble.net> | 2011-11-27 23:07:34 -0500 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2011-12-09 08:54:21 -0800 |
| commit | 4148011316b640f48be6b7dd9005033b5347172c (patch) | |
| tree | c8f8bbd8d33cd45b97b04ec8ccf1105695193db5 | |
| parent | 79f1685c82d882192b1e22b3114be78159c54b86 (diff) | |
genirq: fix regression in irqfixup, irqpoll
commit 52553ddffad76ccf192d4dd9ce88d5818f57f62a upstream.
Commit fa27271bc8d2("genirq: Fixup poll handling") introduced a
regression that broke irqfixup/irqpoll for some hardware configurations.
Amidst reorganizing 'try_one_irq', that patch removed a test that
checked for 'action->handler' returning IRQ_HANDLED, before acting on
the interrupt. Restoring this test back returns the functionality lost
since 2.6.39. In the current set of tests, after 'action' is set, it
must precede '!action->next' to take effect.
With this and my previous patch to irq/spurious.c, c75d720fca8a, all
IRQ regressions that I have encountered are fixed.
Signed-off-by: Edward Donovan <edward.donovan@numble.net>
Reported-and-tested-by: Rogério Brito <rbrito@ime.usp.br>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
| -rw-r--r-- | kernel/irq/spurious.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/kernel/irq/spurious.c b/kernel/irq/spurious.c index b5f4742693c0..dc813a948be2 100644 --- a/kernel/irq/spurious.c +++ b/kernel/irq/spurious.c @@ -84,7 +84,9 @@ static int try_one_irq(int irq, struct irq_desc *desc, bool force) */ action = desc->action; if (!action || !(action->flags & IRQF_SHARED) || - (action->flags & __IRQF_TIMER) || !action->next) + (action->flags & __IRQF_TIMER) || + (action->handler(irq, action->dev_id) == IRQ_HANDLED) || + !action->next) goto out; /* Already running on another processor */ |