linux-kernel - [PATCH] sata_fsl: fix error handling of irq_of_parse_and

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Message-ID: <20141114213905.GA25228@dtor-ws>
Date:	Fri, 14 Nov 2014 13:39:05 -0800
From:	Dmitry Torokhov <dtor@...omium.org>
To:	Tejun Heo <tj@...nel.org>
Cc:	Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.com>,
	Wolfram Sang <wsa@...-dreams.de>,
	Joe Perches <joe@...ches.com>, Paul Bolle <pebolle@...cali.nl>,
	linux-ide@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH] sata_fsl: fix error handling of irq_of_parse_and_map

irq_of_parse_and_map() returns 0 on error (the result is unsigned int),
so testing for negative result never works.

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

Not tested, found by casual code inspection.

 drivers/ata/sata_fsl.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/ata/sata_fsl.c b/drivers/ata/sata_fsl.c
index 4217415..f9054cd 100644
--- a/drivers/ata/sata_fsl.c
+++ b/drivers/ata/sata_fsl.c
@@ -1488,7 +1488,7 @@ static int sata_fsl_probe(struct platform_device *ofdev)
 	host_priv->csr_base = csr_base;
 
 	irq = irq_of_parse_and_map(ofdev->dev.of_node, 0);
-	if (irq < 0) {
+	if (!irq) {
 		dev_err(&ofdev->dev, "invalid irq from platform\n");
 		goto error_exit_with_cleanup;
 	}
-- 
2.1.0.rc2.206.gedb03e5


-- 
Dmitry
--
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