From: Malcolm Priestley <tvboxspy@xxxxxxxxx> commit c0bcf9f3f5b661d4ace2a64a79ef661edd2a4dc8 upstream. 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 <stable@xxxxxxxxxxxxxxx> Signed-off-by: Malcolm Priestley <tvboxspy@xxxxxxxxx> Link: https://lore.kernel.org/r/6de448d7-d833-ef2e-dd7b-3ef9992fee0e@xxxxxxxxx Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- drivers/staging/vt6656/device.h | 1 + drivers/staging/vt6656/main_usb.c | 1 + drivers/staging/vt6656/wcmd.c | 1 + 3 files changed, 3 insertions(+) --- 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; --- a/drivers/staging/vt6656/main_usb.c +++ b/drivers/staging/vt6656/main_usb.c @@ -955,6 +955,7 @@ vt6656_probe(struct usb_interface *intf, priv = hw->priv; priv->hw = hw; priv->usb = udev; + priv->intf = intf; vnt_set_options(priv); --- a/drivers/staging/vt6656/wcmd.c +++ b/drivers/staging/vt6656/wcmd.c @@ -99,6 +99,7 @@ void vnt_run_command(struct work_struct 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; }
