linux-kernel - [PATCH RESENT#2] [AVR32] don't check platform_get

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Date:	Wed,  9 Feb 2011 11:28:04 +0100
From:	Uwe Kleine-König 
	<u.kleine-koenig@...gutronix.de>
To:	Andrew Morton <akpm@...ux-foundation.org>
Cc:	linux-kernel@...r.kernel.org,
	Hans-Christian Egtvedt <hans-christian.egtvedt@...el.com>,
	David Vrabel <dvrabel@...om.com>,
	Greg Kroah-Hartman <gregkh@...e.de>,
	Haavard Skinnemoen <hskinnemoen@...el.com>
Subject: [PATCH RESENT#2] [AVR32] don't check platform_get_irq's return value against zero

platform_get_irq returns -ENXIO on failure, so !int_irq was probably
always true.  Better use (int)int_irq <= 0.  Note that a return value of
zero is still handled as error even though this could mean irq0.

This is a followup to 305b3228f9ff4d59f49e6d34a7034d44ee8ce2f0 that
changed the return value of platform_get_irq from 0 to -ENXIO on error.

Acked-by: Hans-Christian Egtvedt <hans-christian.egtvedt@...el.com>
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@...gutronix.de>
---
Hello,

Hans-Christian Egtvedt asked to push this patch via Linus as there is no avr32
tree.

@Andrew: do you take it?

Best regards
Uwe

 arch/avr32/mach-at32ap/extint.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/arch/avr32/mach-at32ap/extint.c b/arch/avr32/mach-at32ap/extint.c
index e9d1205..dae8682 100644
--- a/arch/avr32/mach-at32ap/extint.c
+++ b/arch/avr32/mach-at32ap/extint.c
@@ -199,7 +199,7 @@ static int __init eic_probe(struct platform_device *pdev)
 
 	regs = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 	int_irq = platform_get_irq(pdev, 0);
-	if (!regs || !int_irq) {
+	if (!regs || (int)int_irq <= 0) {
 		dev_dbg(&pdev->dev, "missing regs and/or irq resource\n");
 		return -ENXIO;
 	}
-- 
1.7.2.3

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