linux-kernel - [PATCH] staging: vt6656: don't return zero on failure path in vt6656

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Message-Id: <1426286081-6013-1-git-send-email-khoroshilov@ispras.ru>
Date:	Sat, 14 Mar 2015 01:34:41 +0300
From:	Alexey Khoroshilov <khoroshilov@...ras.ru>
To:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:	Alexey Khoroshilov <khoroshilov@...ras.ru>,
	Forest Bond <forest@...ttletooquiet.net>,
	devel@...verdev.osuosl.org, linux-kernel@...r.kernel.org,
	ldv-project@...uxtesting.org
Subject: [PATCH] staging: vt6656: don't return zero on failure path in vt6656_probe()

If ieee80211_alloc_hw() fails in vt6656_probe(), it breaks off
initialization, but returns zero.

Found by Linux Driver Verification project (linuxtesting.org).

Signed-off-by: Alexey Khoroshilov <khoroshilov@...ras.ru>
---
 drivers/staging/vt6656/main_usb.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/staging/vt6656/main_usb.c b/drivers/staging/vt6656/main_usb.c
index 71adc1f61838..ab3ab84cb0a7 100644
--- a/drivers/staging/vt6656/main_usb.c
+++ b/drivers/staging/vt6656/main_usb.c
@@ -963,6 +963,7 @@ vt6656_probe(struct usb_interface *intf, const struct usb_device_id *id)
 	hw = ieee80211_alloc_hw(sizeof(struct vnt_private), &vnt_mac_ops);
 	if (!hw) {
 		dev_err(&udev->dev, "could not register ieee80211_hw\n");
+		rc = -ENOMEM;
 		goto err_nomem;
 	}
 
-- 
1.9.1

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