diff options
| author | Edward Donovan <edward.donovan@numble.net> | 2011-11-28 08:07:34 +0400 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2011-11-28 20:43:09 +0400 |
| commit | 52553ddffad76ccf192d4dd9ce88d5818f57f62a (patch) | |
| tree | c455a00601de4deeb4d9cc759e8b527ca574293a | |
| parent | 401d0069cb344f401bc9d264c31db55876ff78c0 (diff) | |
| download | linux-52553ddffad76ccf192d4dd9ce88d5818f57f62a.tar.xz | |
genirq: fix regression in irqfixup, irqpoll
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>
Cc: stable@kernel.org (2.6.39+)
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| -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 */ |