linux-kernel - [PATCH 3.17 072/122] brcmfmac: fix error handling of irq_of_parse_and

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Message-Id: <20141205223316.608195676@linuxfoundation.org>
Date:	Fri,  5 Dec 2014 14:44:06 -0800
From:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:	linux-kernel@...r.kernel.org
Cc:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	stable@...r.kernel.org, Dmitry Torokhov <dtor@...omium.org>,
	Arend van Spriel <arend@...adcom.com>,
	"John W. Linville" <linville@...driver.com>
Subject: [PATCH 3.17 072/122] brcmfmac: fix error handling of irq_of_parse_and_map

3.17-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Dmitry Torokhov <dtor@...omium.org>

commit 4c69f05eaa428e37890daf88b86a567ce615570b upstream.

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>
Acked-by: Arend van Spriel <arend@...adcom.com>
Signed-off-by: John W. Linville <linville@...driver.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 drivers/net/wireless/brcm80211/brcmfmac/of.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

--- a/drivers/net/wireless/brcm80211/brcmfmac/of.c
+++ b/drivers/net/wireless/brcm80211/brcmfmac/of.c
@@ -40,8 +40,8 @@ void brcmf_of_probe(struct brcmf_sdio_de
 		return;
 
 	irq = irq_of_parse_and_map(np, 0);
-	if (irq < 0) {
-		brcmf_err("interrupt could not be mapped: err=%d\n", irq);
+	if (!irq) {
+		brcmf_err("interrupt could not be mapped\n");
 		devm_kfree(dev, sdiodev->pdata);
 		return;
 	}


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