From: Arkadiusz Kubalewski <arkadiusz.kubalewski@xxxxxxxxx> commit d6d04ee6d2c9bb5084c8f6074195d6aa0024e825 upstream. Init pointer with NULL in default switch case statement. Previously the error was produced when compiling against sparse. i40e_debugfs.c:582 i40e_dbg_dump_desc() error: uninitialized symbol 'ring'. Fixes: 44ea803e2fa7 ("i40e: introduce new dump desc XDP command") Signed-off-by: Aleksandr Loktionov <aleksandr.loktionov@xxxxxxxxx> Signed-off-by: Arkadiusz Kubalewski <arkadiusz.kubalewski@xxxxxxxxx> Tested-by: Dave Switzer <david.switzer@xxxxxxxxx> Signed-off-by: Tony Nguyen <anthony.l.nguyen@xxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- drivers/net/ethernet/intel/i40e/i40e_debugfs.c | 3 +++ 1 file changed, 3 insertions(+) --- a/drivers/net/ethernet/intel/i40e/i40e_debugfs.c +++ b/drivers/net/ethernet/intel/i40e/i40e_debugfs.c @@ -578,6 +578,9 @@ static void i40e_dbg_dump_desc(int cnt, case RING_TYPE_XDP: ring = kmemdup(vsi->xdp_rings[ring_id], sizeof(*ring), GFP_KERNEL); break; + default: + ring = NULL; + break; } if (!ring) return;