linux-kernel - [PATCH 4.14 006/115] phy: cpcap-usb: Fix platform_get_irq

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Message-Id: <20180302084504.113541904@linuxfoundation.org>
Date:   Fri,  2 Mar 2018 09:50:09 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Arvind Yadav <arvind.yadav.cs@...il.com>,
        Sebastian Reichel <sebastian.reichel@...labora.co.uk>,
        Tony Lindgren <tony@...mide.com>,
        Kishon Vijay Abraham I <kishon@...com>,
        Sasha Levin <alexander.levin@...izon.com>
Subject: [PATCH 4.14 006/115] phy: cpcap-usb: Fix platform_get_irq_bynames error checking.

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

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

From: Arvind Yadav <arvind.yadav.cs@...il.com>


[ Upstream commit e796cc6a3a9186c92092e2f5929cf8f65b56cf01 ]

The platform_get_irq_byname() function returns negative if an error occurs.
zero or positive number on success. platform_get_irq_byname() error
checking for zero is not correct.

Fixes: 6d6ce40f63af ("phy: cpcap-usb: Add CPCAP PMIC USB support")
Signed-off-by: Arvind Yadav <arvind.yadav.cs@...il.com>
Reviewed-by: Sebastian Reichel <sebastian.reichel@...labora.co.uk>
Acked-by: Tony Lindgren <tony@...mide.com>
Signed-off-by: Kishon Vijay Abraham I <kishon@...com>
Signed-off-by: Sasha Levin <alexander.levin@...izon.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 drivers/phy/motorola/phy-cpcap-usb.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/phy/motorola/phy-cpcap-usb.c
+++ b/drivers/phy/motorola/phy-cpcap-usb.c
@@ -310,7 +310,7 @@ static int cpcap_usb_init_irq(struct pla
 	int irq, error;
 
 	irq = platform_get_irq_byname(pdev, name);
-	if (!irq)
+	if (irq < 0)
 		return -ENODEV;
 
 	error = devm_request_threaded_irq(ddata->dev, irq, NULL,