linux-kernel - [PATCH 4/4] usb: tilegx: fix memleak when create hcd fail

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Date:	Thu, 9 May 2013 12:58:11 +0800
From:	Libo Chen <libo.chen@...wei.com>
To:	<stern@...land.harvard.edu>, <grant.likely@...aro.org>,
	<rob.herring@...xeda.com>
CC:	<linux-usb@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
	<akpm@...ux-foundation.org>, <lizefan@...wei.com>,
	Libo Chen <chenlibo.3@...il.com>,
	Libo Chen <libo.chen@...wei.com>
Subject: [PATCH 4/4] usb: tilegx: fix memleak when create hcd fail

From: Libo Chen <chenlibo.3@...il.com>

When usb_create_hcd fail, we should call gxio_usb_host_destroy

Signed-off-by: Libo Chen <libo.chen@...wei.com>
---
 drivers/usb/host/ohci-tilegx.c |    7 +++++--
 1 files changed, 5 insertions(+), 2 deletions(-)

diff --git a/drivers/usb/host/ohci-tilegx.c b/drivers/usb/host/ohci-tilegx.c
index 1ae7b28..5888fc4 100644
--- a/drivers/usb/host/ohci-tilegx.c
+++ b/drivers/usb/host/ohci-tilegx.c
@@ -112,8 +112,10 @@ static int ohci_hcd_tilegx_drv_probe(struct platform_device *pdev)
 
 	hcd = usb_create_hcd(&ohci_tilegx_hc_driver, &pdev->dev,
 			     dev_name(&pdev->dev));
-	if (!hcd)
-		return -ENOMEM;
+	if (!hcd){
+		ret = -ENOMEM;
+		goto err_hcd;
+	}
 
 	/*
 	 * We don't use rsrc_start to map in our registers, but seems like
@@ -165,6 +167,7 @@ err_have_irq:
 err_no_irq:
 	tilegx_stop_ohc();
 	usb_put_hcd(hcd);
+err_hcd:
 	gxio_usb_host_destroy(&pdata->usb_ctx);
 	return ret;
 }
-- 
1.7.1


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