linux-kernel - [PATCH AUTOSEL for 4.14 32/51] usb: mtu3: fix error return code in ssusb_gadget

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Message-ID: <20171122222526.20021-32-alexander.levin@verizon.com>
Date:   Wed, 22 Nov 2017 22:25:44 +0000
From:   alexander.levin@...izon.com
To:     "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "stable@...r.kernel.org" <stable@...r.kernel.org>
Cc:     Chunfeng Yun <chunfeng.yun@...iatek.com>,
        Felipe Balbi <felipe.balbi@...ux.intel.com>,
        alexander.levin@...izon.com
Subject: [PATCH AUTOSEL for 4.14 32/51] usb: mtu3: fix error return code in
 ssusb_gadget_init()

From: Chunfeng Yun <chunfeng.yun@...iatek.com>

[ Upstream commit c162ff0aaaac456ef29aebd1e9d4d3e305cd3279 ]

When failing to get IRQ number, platform_get_irq() may return
-EPROBE_DEFER, but we ignore it and always return -ENODEV,
so fix it.

Signed-off-by: Chunfeng Yun <chunfeng.yun@...iatek.com>
Signed-off-by: Felipe Balbi <felipe.balbi@...ux.intel.com>
Signed-off-by: Sasha Levin <alexander.levin@...izon.com>
---
 drivers/usb/mtu3/mtu3_core.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/usb/mtu3/mtu3_core.c b/drivers/usb/mtu3/mtu3_core.c
index 99c65b0788ff..947579842ad7 100644
--- a/drivers/usb/mtu3/mtu3_core.c
+++ b/drivers/usb/mtu3/mtu3_core.c
@@ -774,9 +774,9 @@ int ssusb_gadget_init(struct ssusb_mtk *ssusb)
 		return -ENOMEM;
 
 	mtu->irq = platform_get_irq(pdev, 0);
-	if (mtu->irq <= 0) {
+	if (mtu->irq < 0) {
 		dev_err(dev, "fail to get irq number\n");
-		return -ENODEV;
+		return mtu->irq;
 	}
 	dev_info(dev, "irq %d\n", mtu->irq);
 
-- 
2.11.0