mcba_usb sets the driver's priv data to NULL before waiting for the
completion of outsdanding urbs. This can results in NULL pointer
dereference, c.f. [1] and [2].
Remove the call to usb_set_intfdata(intf, NULL). The core will take
care of setting it to NULL after mcba_usb_disconnect() at [3].
[1] c/27ef17849779 ("usb: add usb_set_intfdata() documentation")
Link: https://git.kernel.org/gregkh/usb/c/27ef17849779
[2] thread about usb_set_intfdata() on linux-usb mailing.
Link: https://lore.kernel.org/linux-usb/Y4OD70GD4KnoRk0k@xxxxxxxxxxxxxxxxxxx/
[3] function usb_unbind_interface() from drivers/usb/core/driver.c
Link: https://elixir.bootlin.com/linux/v6.0/source/drivers/usb/core/driver.c#L497
Fixes: 51f3baad7de9 ("can: mcba_usb: Add support for Microchip CAN BUS Analyzer")
Signed-off-by: Vincent Mailhol <mailhol.vincent@xxxxxxxxxx>
---
drivers/net/can/usb/mcba_usb.c | 2 --
1 file changed, 2 deletions(-)
diff --git a/drivers/net/can/usb/mcba_usb.c b/drivers/net/can/usb/mcba_usb.c
index 47619e9cb005..a21c1ad4894f 100644
--- a/drivers/net/can/usb/mcba_usb.c
+++ b/drivers/net/can/usb/mcba_usb.c
@@ -890,8 +890,6 @@ static void mcba_usb_disconnect(struct usb_interface *intf)
{
struct mcba_priv *priv = usb_get_intfdata(intf);
- usb_set_intfdata(intf, NULL);
-
netdev_info(priv->netdev, "device disconnected\n");
unregister_candev(priv->netdev);
--
2.37.4
