linux-kernel - drivers/net/ethernet/mellanox/mlx5/core/en_tc.c:1981 same_hw_devs() error: uninitialized symbol 'fsystem

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Message-ID: <20180811115853.jhjniiv6trj7l5si@mwanda>
Date:   Sat, 11 Aug 2018 14:58:53 +0300
From:   Dan Carpenter <dan.carpenter@...cle.com>
To:     kbuild@...org, Or Gerlitz <ogerlitz@...lanox.com>
Cc:     kbuild-all@...org, linux-kernel@...r.kernel.org,
        Saeed Mahameed <saeedm@...lanox.com>
Subject: drivers/net/ethernet/mellanox/mlx5/core/en_tc.c:1981 same_hw_devs()
 error: uninitialized symbol 'fsystem_guid'.

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   f313b43be461f157755a57c1156f86abe10588de
commit: 816f670623692b5da2787f278cbfdb331ed29b8a net/mlx5e: Properly check if hairpin is possible between two functions

New smatch warnings:
drivers/net/ethernet/mellanox/mlx5/core/en_tc.c:1981 same_hw_devs() error: uninitialized symbol 'fsystem_guid'.
drivers/net/ethernet/mellanox/mlx5/core/en_tc.c:1981 same_hw_devs() error: uninitialized symbol 'psystem_guid'.

Old smatch warnings:
drivers/net/ethernet/mellanox/mlx5/core/en_tc.c:620 mlx5e_hairpin_flow_add() error: uninitialized symbol 'link_speed'.

# https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=816f670623692b5da2787f278cbfdb331ed29b8a
git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
git remote update linus
git checkout 816f670623692b5da2787f278cbfdb331ed29b8a
vim +/fsystem_guid +1981 drivers/net/ethernet/mellanox/mlx5/core/en_tc.c

bdd66ac0 Or Gerlitz 2017-06-11  1969  
5c65c564 Or Gerlitz 2017-11-22  1970  static bool same_hw_devs(struct mlx5e_priv *priv, struct mlx5e_priv *peer_priv)
5c65c564 Or Gerlitz 2017-11-22  1971  {
5c65c564 Or Gerlitz 2017-11-22  1972  	struct mlx5_core_dev *fmdev, *pmdev;
816f6706 Or Gerlitz 2018-08-08  1973  	u64 fsystem_guid, psystem_guid;
5c65c564 Or Gerlitz 2017-11-22  1974  
5c65c564 Or Gerlitz 2017-11-22  1975  	fmdev = priv->mdev;
5c65c564 Or Gerlitz 2017-11-22  1976  	pmdev = peer_priv->mdev;
5c65c564 Or Gerlitz 2017-11-22  1977  
816f6706 Or Gerlitz 2018-08-08  1978  	mlx5_query_nic_vport_system_image_guid(fmdev, &fsystem_guid);
816f6706 Or Gerlitz 2018-08-08  1979  	mlx5_query_nic_vport_system_image_guid(pmdev, &psystem_guid);
5c65c564 Or Gerlitz 2017-11-22  1980  
816f6706 Or Gerlitz 2018-08-08 @1981  	return (fsystem_guid == psystem_guid);
5c65c564 Or Gerlitz 2017-11-22  1982  }
5c65c564 Or Gerlitz 2017-11-22  1983  

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