Re: [PATCH net-next] bonding: Remove extraneous parentheses in bond_setup

[Nick Desaulniers]

On Thu, Jun 25, 2020 at 9:10 PM Nathan Chancellor
<natechancellor@xxxxxxxxx> wrote:
>
> Clang warns:
>
> drivers/net/bonding/bond_main.c:4657:23: warning: equality comparison
> with extraneous parentheses [-Wparentheses-equality]
>         if ((BOND_MODE(bond) == BOND_MODE_ACTIVEBACKUP))
>              ~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~
>
> drivers/net/bonding/bond_main.c:4681:23: warning: equality comparison
> with extraneous parentheses [-Wparentheses-equality]
>         if ((BOND_MODE(bond) == BOND_MODE_ACTIVEBACKUP))
>              ~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~
>
> This warning occurs when a comparision has two sets of parentheses,
> which is usually the convention for doing an assignment within an
> if statement. Since equality comparisons do not need a second set of
> parentheses, remove them to fix the warning.
>
> Fixes: 18cb261afd7b ("bonding: support hardware encryption offload to slaves")
> Link: https://github.com/ClangBuiltLinux/linux/issues/1066
> Signed-off-by: Nathan Chancellor <natechancellor@xxxxxxxxx>

Thanks for the patch.  I recently saw this in a report from KernelCI
this morning.  Adding a tag to reward the robot.

Reported-by: kernelci.org bot <bot@xxxxxxxxxxxx>
Reviewed-by: Nick Desaulniers <ndesaulniers@xxxxxxxxxx>

> ---
>  drivers/net/bonding/bond_main.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/net/bonding/bond_main.c b/drivers/net/bonding/bond_main.c
> index 4ef99efc37f6..b3479584cc16 100644
> --- a/drivers/net/bonding/bond_main.c
> +++ b/drivers/net/bonding/bond_main.c
> @@ -4654,7 +4654,7 @@ void bond_setup(struct net_device *bond_dev)
>
>  #ifdef CONFIG_XFRM_OFFLOAD
>         /* set up xfrm device ops (only supported in active-backup right now) */
> -       if ((BOND_MODE(bond) == BOND_MODE_ACTIVEBACKUP))
> +       if (BOND_MODE(bond) == BOND_MODE_ACTIVEBACKUP)
>                 bond_dev->xfrmdev_ops = &bond_xfrmdev_ops;
>         bond->xs = NULL;
>  #endif /* CONFIG_XFRM_OFFLOAD */
> @@ -4678,7 +4678,7 @@ void bond_setup(struct net_device *bond_dev)
>
>         bond_dev->hw_features |= NETIF_F_GSO_ENCAP_ALL | NETIF_F_GSO_UDP_L4;
>  #ifdef CONFIG_XFRM_OFFLOAD
> -       if ((BOND_MODE(bond) == BOND_MODE_ACTIVEBACKUP))
> +       if (BOND_MODE(bond) == BOND_MODE_ACTIVEBACKUP)
>                 bond_dev->hw_features |= BOND_XFRM_FEATURES;
>  #endif /* CONFIG_XFRM_OFFLOAD */
>         bond_dev->features |= bond_dev->hw_features;
>
> base-commit: 7bed14551659875e1cd23a7c0266394a29a773b3
> --

-- 
Thanks,
~Nick Desaulniers