[tip:irq/urgent] irqchip: gic: fix irq_trigger return

[tip-bot for Abhijeet Dharmapurikar]

Commit-ID:  bad9a43a20372a3b41e15e8aa03b918c76f360f0
Gitweb:     http://git.kernel.org/tip/bad9a43a20372a3b41e15e8aa03b918c76f360f0
Author:     Abhijeet Dharmapurikar <adharmap@xxxxxxxxxxxxxx>
AuthorDate: Tue, 19 Mar 2013 16:05:49 -0700
Committer:  Thomas Gleixner <tglx@xxxxxxxxxxxxx>
CommitDate: Tue, 26 Mar 2013 20:52:25 +0100

irqchip: gic: fix irq_trigger return

The genirq layer expects a 0 in case that the retrigger function is
not able to resend the irq in hardware, but the code is returning
-ENXIO. Fix it.

[ tglx: Reworked comment and changelog ]

Signed-off-by: Abhijeet Dharmapurikar <adharmap@xxxxxxxxxxxxxx>
Signed-off-by: Stephen Boyd <sboyd@xxxxxxxxxxxxxx>
Cc: linux-arm-kernel@xxxxxxxxxxxxxxxxxxx
Link: http://lkml.kernel.org/r/1363734349-32635-1-git-send-email-sboyd@xxxxxxxxxxxxxx
Signed-off-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
---
 drivers/irqchip/irq-gic.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/irqchip/irq-gic.c b/drivers/irqchip/irq-gic.c
index a32e0d5..fc6aebf 100644
--- a/drivers/irqchip/irq-gic.c
+++ b/drivers/irqchip/irq-gic.c
@@ -236,7 +236,8 @@ static int gic_retrigger(struct irq_data *d)
 	if (gic_arch_extn.irq_retrigger)
 		return gic_arch_extn.irq_retrigger(d);
 
-	return -ENXIO;
+	/* the genirq layer expects 0 if we can't retrigger in hardware */
+	return 0;
 }
 
 #ifdef CONFIG_SMP
--
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