Messages in this thread | | | Date | Thu, 20 Apr 2017 13:19:49 -0400 (EDT) | Subject | Re: [PATCH] net/mlx4: suppress 'may be used uninitialized' warning | From | David Miller <> |
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From: Greg Thelen <gthelen@google.com> Date: Mon, 17 Apr 2017 23:21:35 -0700
> gcc 4.8.4 complains that mlx4_SW2HW_MPT_wrapper() uses an uninitialized > 'mpt' variable: > drivers/net/ethernet/mellanox/mlx4/resource_tracker.c: In function 'mlx4_SW2HW_MPT_wrapper': > drivers/net/ethernet/mellanox/mlx4/resource_tracker.c:2802:12: warning: 'mpt' may be used uninitialized in this function [-Wmaybe-uninitialized] > mpt->mtt = mtt; > > I think this warning is a false complaint. mpt is only used when > mr_res_start_move_to() return zero, and in all such cases it initializes > mpt. But apparently gcc cannot see that. > > Initialize mpt to avoid the warning. > > Signed-off-by: Greg Thelen <gthelen@google.com>
Appied to net-next.
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