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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>
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@ -1634,6 +1634,9 @@ int iwctl_siwencodeext(struct net_device *dev, struct iw_request_info *info,
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if (pMgmt == NULL)
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return -EFAULT;
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if (!(pDevice->flags & DEVICE_FLAGS_OPENED))
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return -ENODEV;
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buf = kzalloc(sizeof(struct viawget_wpa_param), GFP_KERNEL);
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if (buf == NULL)
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return -ENOMEM;
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