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Code Issues Releases Wiki Activity

mlx5: Remove uninitialized use of key in mlx5_core_create_mkey

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Clang warns:

../drivers/net/ethernet/mellanox/mlx5/core/mr.c:63:21: warning: variable
'key' is uninitialized when used here [-Wuninitialized]
                      mkey_index, key, mkey->key);
                                  ^~~
../drivers/net/ethernet/mellanox/mlx5/core/mlx5_core.h:54:6: note:
expanded from macro 'mlx5_core_dbg'
                 ##__VA_ARGS__)
                   ^~~~~~~~~~~
../include/linux/dev_printk.h:114:39: note: expanded from macro
'dev_dbg'
        dynamic_dev_dbg(dev, dev_fmt(fmt), ##__VA_ARGS__)
                                             ^~~~~~~~~~~
../include/linux/dynamic_debug.h:158:19: note: expanded from macro
'dynamic_dev_dbg'
                           dev, fmt, ##__VA_ARGS__)
                                       ^~~~~~~~~~~
../include/linux/dynamic_debug.h:143:56: note: expanded from macro
'_dynamic_func_call'
        __dynamic_func_call(__UNIQUE_ID(ddebug), fmt, func, ##__VA_ARGS__)
                                                              ^~~~~~~~~~~
../include/linux/dynamic_debug.h:125:15: note: expanded from macro
'__dynamic_func_call'
                func(&id, ##__VA_ARGS__);               \
                            ^~~~~~~~~~~
../drivers/net/ethernet/mellanox/mlx5/core/mr.c:47:8: note: initialize
the variable 'key' to silence this warning
        u8 key;
              ^
               = '\0'
1 warning generated.

key's initialization was removed in commit fc6a9f86f0 ("{IB,net}/mlx5:
Assign mkey variant in mlx5_ib only") but its use was not fully removed.
Remove it now so that there is no more warning.

Fixes: fc6a9f86f0 ("{IB,net}/mlx5: Assign mkey variant in mlx5_ib only")
Link: https://github.com/ClangBuiltLinux/linux/issues/932
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
This commit is contained in:
Nathan Chancellor 2020-03-16 13:34:52 -07:00 committed by Saeed Mahameed
parent a3cfdd3928
commit 826096d84f
1 changed files with 1 additions and 3 deletions
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4
drivers/net/ethernet/mellanox/mlx5/core/mr.c
View file

@ -44,7 +44,6 @@ int mlx5_core_create_mkey(struct mlx5_core_dev *dev,
u32 mkey_index;
void *mkc;
int err;
u8 key;
MLX5_SET(create_mkey_in, in, opcode, MLX5_CMD_OP_CREATE_MKEY);
@ -59,8 +58,7 @@ int mlx5_core_create_mkey(struct mlx5_core_dev *dev,
mkey->key |= mlx5_idx_to_mkey(mkey_index);
mkey->pd = MLX5_GET(mkc, mkc, pd);
mlx5_core_dbg(dev, "out 0x%x, key 0x%x, mkey 0x%x\n",
mkey_index, key, mkey->key);
mlx5_core_dbg(dev, "out 0x%x, mkey 0x%x\n", mkey_index, mkey->key);
return 0;
}
EXPORT_SYMBOL(mlx5_core_create_mkey);