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net/mlx4: Use cpumask_available for eq->affinity_mask

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[ Upstream commit 8ac1ee6f4d62e781e3b3fd8b9c42b70371427669 ]

Clang warns that the address of a pointer will always evaluated as true
in a boolean context:

drivers/net/ethernet/mellanox/mlx4/eq.c:243:11: warning: address of
array 'eq->affinity_mask' will always evaluate to 'true'
[-Wpointer-bool-conversion]
        if (!eq->affinity_mask || cpumask_empty(eq->affinity_mask))
            ~~~~~^~~~~~~~~~~~~
1 warning generated.

Use cpumask_available, introduced in commit f7e30f01a9e2 ("cpumask: Add
helper cpumask_available()"), which does the proper checking and avoids
this warning.

Link: https://github.com/ClangBuiltLinux/linux/issues/86
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Nathan Chancellor 2018-09-21 02:44:12 -07:00 • committed by Greg Kroah-Hartman
parent 6df8eb6ae2
commit 0d02fdd080
1 changed files with 2 additions and 1 deletions
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3
drivers/net/ethernet/mellanox/mlx4/eq.c
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@ -228,7 +228,8 @@ static void mlx4_set_eq_affinity_hint(struct mlx4_priv *priv, int vec)
struct mlx4_dev *dev = &priv->dev;
struct mlx4_eq *eq = &priv->eq_table.eq[vec];
if (!eq->affinity_mask || cpumask_empty(eq->affinity_mask))
if (!cpumask_available(eq->affinity_mask) ||
cpumask_empty(eq->affinity_mask))
return;
hint_err = irq_set_affinity_hint(eq->irq, eq->affinity_mask);