[PATCH 5/5] staging: vt6656: set usb_set_intfdata on driver fail.

[Malcolm Priestley]

intfdata will contain stale pointer when the device is detached after
failed initialization when referenced in vt6656_disconnect

Provide driver access to it here and NULL it.

Cc: stable <sta...@vger.kernel.org>
Signed-off-by: Malcolm Priestley <tvbox...@gmail.com>
---
 drivers/staging/vt6656/device.h   | 1 +
 drivers/staging/vt6656/main_usb.c | 1 +
 drivers/staging/vt6656/wcmd.c     | 1 +
 3 files changed, 3 insertions(+)

diff --git a/drivers/staging/vt6656/device.h b/drivers/staging/vt6656/device.h
index 6074ceda78bf..50e1c8918040 100644
--- a/drivers/staging/vt6656/device.h
+++ b/drivers/staging/vt6656/device.h
@@ -259,6 +259,7 @@ struct vnt_private {
        u8 mac_hw;
        /* netdev */
        struct usb_device *usb;
+       struct usb_interface *intf;
 
        u64 tsf_time;
        u8 rx_rate;
diff --git a/drivers/staging/vt6656/main_usb.c 
b/drivers/staging/vt6656/main_usb.c
index 4a5d741f94f5..9cb924c54571 100644
--- a/drivers/staging/vt6656/main_usb.c
+++ b/drivers/staging/vt6656/main_usb.c
@@ -992,6 +992,7 @@ vt6656_probe(struct usb_interface *intf, const struct 
usb_device_id *id)
        priv = hw->priv;
        priv->hw = hw;
        priv->usb = udev;
+       priv->intf = intf;
 
        vnt_set_options(priv);
 
diff --git a/drivers/staging/vt6656/wcmd.c b/drivers/staging/vt6656/wcmd.c
index 3eb2f11a5de1..2c5250ca2801 100644
--- a/drivers/staging/vt6656/wcmd.c
+++ b/drivers/staging/vt6656/wcmd.c
@@ -99,6 +99,7 @@ void vnt_run_command(struct work_struct *work)
                if (vnt_init(priv)) {
                        /* If fail all ends TODO retry */
                        dev_err(&priv->usb->dev, "failed to start\n");
+                       usb_set_intfdata(priv->intf, NULL);
                        ieee80211_free_hw(priv->hw);
                        return;
                }
-- 
2.24.0
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