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staging: vt6656: set usb_set_intfdata on driver fail.

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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>
This commit is contained in:
Malcolm Priestley 2019-12-20 21:15:59 +00:00 committed by Greg Kroah-Hartman
parent fbfb42b726
commit e77914f232
3 changed files with 3 additions and 0 deletions
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1
drivers/staging/vt6656/device.h
View File

@ -269,6 +269,7 @@ struct vnt_private {
u8 mac_hw;
/* netdev */
struct usb_device *usb;
struct usb_interface *intf;
u64 tsf_time;
u8 rx_rate;

1
drivers/staging/vt6656/main_usb.c
View File

@ -954,6 +954,7 @@ 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);

1
drivers/staging/vt6656/wcmd.c
View File

@ -109,6 +109,7 @@ 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;
}