linux-kernel - [PATCH v2] usb: gadget: fix error handling

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Message-Id: <1452322031-19086-1-git-send-email-sudipm.mukherjee@gmail.com>
Date:	Sat,  9 Jan 2016 12:17:11 +0530
From:	Sudip Mukherjee <sudipm.mukherjee@...il.com>
To:	Felipe Balbi <balbi@...com>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:	linux-kernel@...r.kernel.org, linux-usb@...r.kernel.org,
	Peter Cen <peter.chen@...escale.com>,
	Sudip Mukherjee <sudipm.mukherjee@...il.com>
Subject: [PATCH v2] usb: gadget: fix error handling

We are doing PTR_ERR() of NULL, and that will actually make ret = 0.
So in case of both error and success we are actually returning the
success code.

Reviewed-by: Peter Cen <peter.chen@...escale.com>
Signed-off-by: Sudip Mukherjee <sudip@...torindia.org>
---

v2: spelling of incase in commit message

 drivers/usb/gadget/composite.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/usb/gadget/composite.c b/drivers/usb/gadget/composite.c
index 8b14c2a..17ce6b5 100644
--- a/drivers/usb/gadget/composite.c
+++ b/drivers/usb/gadget/composite.c
@@ -2017,14 +2017,14 @@ int composite_os_desc_req_prepare(struct usb_composite_dev *cdev,
 
 	cdev->os_desc_req = usb_ep_alloc_request(ep0, GFP_KERNEL);
 	if (!cdev->os_desc_req) {
-		ret = PTR_ERR(cdev->os_desc_req);
+		ret = -ENOMEM;
 		goto end;
 	}
 
 	/* OS feature descriptor length <= 4kB */
 	cdev->os_desc_req->buf = kmalloc(4096, GFP_KERNEL);
 	if (!cdev->os_desc_req->buf) {
-		ret = PTR_ERR(cdev->os_desc_req->buf);
+		ret = -ENOMEM;
 		kfree(cdev->os_desc_req);
 		goto end;
 	}
-- 
1.9.1