linux-kernel - [PATCH] HIS: nokia-modem: fix error handling of irq_of_parse_and

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Date:	Fri, 14 Nov 2014 14:06:37 -0800
From:	Dmitry Torokhov <dtor@...omium.org>
To:	Sebastian Reichel <sre@...nel.org>
Cc:	Pavel Machek <pavel@....cz>,
	Michael Opdenacker <michael.opdenacker@...e-electrons.com>,
	linux-kernel@...r.kernel.org
Subject: [PATCH] HIS: nokia-modem: fix error handling of irq_of_parse_and_map

Return value of irq_of_parse_and_map() is unsigned int, with 0
indicating failure, so testing for negative result never works.

Signed-off-by: Dmitry Torokhov <dtor@...omium.org>
---

Not tested, found by casual code inspection.

 drivers/hsi/clients/nokia-modem.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/hsi/clients/nokia-modem.c b/drivers/hsi/clients/nokia-modem.c
index e43c3c9..32cc9af 100644
--- a/drivers/hsi/clients/nokia-modem.c
+++ b/drivers/hsi/clients/nokia-modem.c
@@ -164,9 +164,9 @@ static int nokia_modem_probe(struct device *dev)
 	dev_set_drvdata(dev, modem);
 
 	irq = irq_of_parse_and_map(np, 0);
-	if (irq < 0) {
+	if (!irq) {
 		dev_err(dev, "Invalid rst_ind interrupt (%d)\n", irq);
-		return irq;
+		return -EINVAL;
 	}
 	modem->nokia_modem_rst_ind_irq = irq;
 	pflags = irq_get_trigger_type(irq);
-- 
2.1.0.rc2.206.gedb03e5


-- 
Dmitry
--
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