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authorEdward Donovan <edward.donovan@numble.net>2011-11-01 15:29:44 -0400
committerThomas Gleixner <tglx@linutronix.de>2011-11-03 13:12:39 +0100
commitc75d720fca8a91ce99196d33adea383621027bf2 (patch)
tree8b5f2605c4bbd61f2cc43f37a163b60d073433cd /kernel/irq
parentc3b92c8787367a8bb53d57d9789b558f1295cc96 (diff)
downloadlinux-c75d720fca8a91ce99196d33adea383621027bf2.tar.bz2
genirq: Fix irqfixup, irqpoll regression
commit d05c65fff0 ("genirq: spurious: Run only one poller at a time") introduced a regression, leaving the boot options 'irqfixup' and 'irqpoll' non-functional. The patch placed tests in each function, to exit if the function is already running. The test in 'misrouted_irq' exited when it should have proceeded, effectively disabling 'misrouted_irq' and 'poll_spurious_irqs'. The check for an already running poller needs to be "!= 1" not "== 1" as "1" is the value when the first poller starts running. Signed-off-by: Edward Donovan <edward.donovan@numble.net> Cc: maciej.rutecki@gmail.com Link: http://lkml.kernel.org/r/1320175784-6745-1-git-send-email-edward.donovan@numble.net Cc: stable@vger.kernel.org # >= 2.6.39 Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'kernel/irq')
-rw-r--r--kernel/irq/spurious.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/kernel/irq/spurious.c b/kernel/irq/spurious.c
index aa57d5da18c1..b5f4742693c0 100644
--- a/kernel/irq/spurious.c
+++ b/kernel/irq/spurious.c
@@ -115,7 +115,7 @@ static int misrouted_irq(int irq)
struct irq_desc *desc;
int i, ok = 0;
- if (atomic_inc_return(&irq_poll_active) == 1)
+ if (atomic_inc_return(&irq_poll_active) != 1)
goto out;
irq_poll_cpu = smp_processor_id();