linux-kernel - [PATCH] xen: events: fix error checks in bind_*_to

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Date:	Wed, 30 Mar 2011 21:14:26 +0200
From:	Nicolas Kaiser <nikai@...ai.net>
To:	Jeremy Fitzhardinge <jeremy.fitzhardinge@...rix.com>
Cc:	Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>,
	xen-devel@...ts.xensource.com,
	virtualization@...ts.linux-foundation.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH] xen: events: fix error checks in bind_*_to_irqhandler()

Checking 'irq < 0' doesn't work when 'irq' is unsigned.

The assigned bind_evtchn_to_irq() and bind_virq_to_irq()
return int, so using int appears appropriate.

Signed-off-by: Nicolas Kaiser <nikai@...ai.net>
---
 drivers/xen/events.c |    6 ++----
 1 files changed, 2 insertions(+), 4 deletions(-)

diff --git a/drivers/xen/events.c b/drivers/xen/events.c
index 036343b..589f0a5 100644
--- a/drivers/xen/events.c
+++ b/drivers/xen/events.c
@@ -912,8 +912,7 @@ int bind_evtchn_to_irqhandler(unsigned int evtchn,
 			      unsigned long irqflags,
 			      const char *devname, void *dev_id)
 {
-	unsigned int irq;
-	int retval;
+	int irq, retval;
 
 	irq = bind_evtchn_to_irq(evtchn);
 	if (irq < 0)
@@ -955,8 +954,7 @@ int bind_virq_to_irqhandler(unsigned int virq, unsigned int cpu,
 			    irq_handler_t handler,
 			    unsigned long irqflags, const char *devname, void *dev_id)
 {
-	unsigned int irq;
-	int retval;
+	int irq, retval;
 
 	irq = bind_virq_to_irq(virq, cpu);
 	if (irq < 0)
-- 
1.7.3.4
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