Commit 5e8c3d3e authored Sep 23, 2013 by Malcolm Priestley Committed by Greg Kroah-Hartman Sep 25, 2013

staging: vt6656: [BUG] iwctl_siwencodeext return if device not open



Don't allow entry to iwctl_siwencodeext if device not open.

This fixes a race condition where wpa supplicant/network manager
enters the function when the device is already closed.

Signed-off-by: Malcolm Priestley <tvboxspy@gmail.com>
Cc: stable@vger.kernel.org # 3.8+
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

parent e3eb270f

drivers/staging/vt6656/iwctl.c

+3 −0

Original line number	Diff line number	Diff line
		@@ -1634,6 +1634,9 @@ int iwctl_siwencodeext(struct net_device dev, struct iw_request_info info,
		if (pMgmt == NULL)
		return -EFAULT;

		if (!(pDevice->flags & DEVICE_FLAGS_OPENED))
		return -ENODEV;

		buf = kzalloc(sizeof(struct viawget_wpa_param), GFP_KERNEL);
		if (buf == NULL)
		return -ENOMEM;