linux-kernel - [PATCH 2/6 v2] usb/gadget/pch

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Date:	Thu, 12 Jan 2012 11:27:06 +0900
From:	Tomoya MORINAGA <tomoya.rohm@...il.com>
To:	Felipe Balbi <balbi@...com>, Greg Kroah-Hartman <gregkh@...e.de>,
	linux-usb@...r.kernel.org, linux-kernel@...r.kernel.org
Cc:	qi.wang@...el.com, yong.y.wang@...el.com, joel.clark@...el.com,
	kok.howg.ewe@...el.com, Tomoya MORINAGA <tomoya.rohm@...il.com>
Subject: [PATCH 2/6 v2] usb/gadget/pch_udc: Fix wrong return value

ISSUE:
If the return value of pch_udc_pcd_init() is False, the return value of this function is unsettled.
Since pch_udc_pcd_init() always returns 0, there is not actually the issue.

CAUSE:
If pch_udc_pcd_init() is True, the variable, retval, is not set for an appropriate value.

Signed-off-by: Tomoya MORINAGA <tomoya.rohm@...il.com>
---
V2: Divide into 6 patches
---
 drivers/usb/gadget/pch_udc.c |    4 +++-
 1 files changed, 3 insertions(+), 1 deletions(-)

diff --git a/drivers/usb/gadget/pch_udc.c b/drivers/usb/gadget/pch_udc.c
index a4f8b08..78a2fce 100644
--- a/drivers/usb/gadget/pch_udc.c
+++ b/drivers/usb/gadget/pch_udc.c
@@ -2920,8 +2920,10 @@ static int pch_udc_probe(struct pci_dev *pdev,
 	}
 	pch_udc = dev;
 	/* initialize the hardware */
-	if (pch_udc_pcd_init(dev))
+	if (pch_udc_pcd_init(dev)) {
+		retval = -ENODEV;
 		goto finished;
+	}
 	if (request_irq(pdev->irq, pch_udc_isr, IRQF_SHARED, KBUILD_MODNAME,
 			dev)) {
 		dev_err(&pdev->dev, "%s: request_irq(%d) fail\n", __func__,
-- 
1.7.4.4

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