From: Malcolm Priestley tvboxspy@gmail.com
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@vger.kernel.org Signed-off-by: Malcolm Priestley tvboxspy@gmail.com Link: https://lore.kernel.org/r/6de448d7-d833-ef2e-dd7b-3ef9992fee0e@gmail.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- 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 @@ -272,6 +272,7 @@ 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 @@ -979,6 +979,7 @@ 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 @@ -113,6 +113,7 @@ 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; }