linux-kernel - [PATCH] irqdomain: fix irq_domain_xlate

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Date:	Tue, 2 Aug 2016 10:52:45 +0200
From:	Sebastian Frias <sf84@...oste.net>
To:	Grant Likely <grant.likely@...retlab.ca>,
	Thomas Gleixner <tglx@...utronix.de>,
	Marc Zyngier <marc.zyngier@....com>,
	Jason Cooper <jason@...edaemon.net>
Cc:	LKML <linux-kernel@...r.kernel.org>, Mason <slash.tmp@...e.fr>
Subject: [PATCH] irqdomain: fix irq_domain_xlate_onetwocell()

Use IRQ_TYPE_SENSE_MASK on irq_domain_xlate_onetwocell()

According to the xlate() callback definition, the 'out_type' parameter
needs to be the "linux irq type". A mask for such bits exists,
IRQ_TYPE_SENSE_MASK, and as a matter of fact it is used in
irq_domain_xlate_twocell(), use it for irq_domain_xlate_onetwocell() as
well.

Fixes: 16b2e6e2f31d ("irq_domain: Create common xlate functions that device
drivers can use")

Signed-off-by: Sebastian Frias <sf84@...oste.net>
---
 kernel/irq/irqdomain.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/kernel/irq/irqdomain.c b/kernel/irq/irqdomain.c
index 8798b6c..1bdd3fe 100644
--- a/kernel/irq/irqdomain.c
+++ b/kernel/irq/irqdomain.c
@@ -824,7 +824,10 @@ int irq_domain_xlate_onetwocell(struct irq_domain *d,
 	if (WARN_ON(intsize < 1))
 		return -EINVAL;
 	*out_hwirq = intspec[0];
-	*out_type = (intsize > 1) ? intspec[1] : IRQ_TYPE_NONE;
+	if (intsize > 1)
+		*out_type = intspec[1] & IRQ_TYPE_SENSE_MASK;
+	else
+		*out_type = IRQ_TYPE_NONE;
 	return 0;
 }
 EXPORT_SYMBOL_GPL(irq_domain_xlate_onetwocell);
-- 
1.7.11.2