team: Remove NULL check before dev_{put, hold}

[PATCH net-next] team: Remove NULL check before dev_{put, hold}

Posted by Yang Li 2 years, 6 months ago

The call netdev_{put, hold} of dev_{put, hold} will check NULL,
so there is no need to check before using dev_{put, hold},
remove it to silence the warning:

./drivers/net/team/team.c:2325:3-10: WARNING: NULL check before dev_{put, hold} functions is not needed.

Reported-by: Abaci Robot <abaci@linux.alibaba.com>
Closes: https://bugzilla.openanolis.cn/show_bug.cgi?id=5991
Signed-off-by: Yang Li <yang.lee@linux.alibaba.com>
---
 drivers/net/team/team.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/net/team/team.c b/drivers/net/team/team.c
index d3dc22509ea5..bc50fc3f6913 100644
--- a/drivers/net/team/team.c
+++ b/drivers/net/team/team.c
@@ -2321,8 +2321,7 @@ static struct team *team_nl_team_get(struct genl_info *info)
 	ifindex = nla_get_u32(info->attrs[TEAM_ATTR_TEAM_IFINDEX]);
 	dev = dev_get_by_index(net, ifindex);
 	if (!dev || dev->netdev_ops != &team_netdev_ops) {
-		if (dev)
-			dev_put(dev);
+		dev_put(dev);
 		return NULL;
 	}
 
-- 
2.20.1.7.g153144c

Re: [PATCH net-next] team: Remove NULL check before dev_{put, hold}

Posted by Hangbin Liu 2 years, 6 months ago

On Thu, Jul 27, 2023 at 08:57:41AM +0800, Yang Li wrote:
> The call netdev_{put, hold} of dev_{put, hold} will check NULL,
> so there is no need to check before using dev_{put, hold},
> remove it to silence the warning:
> 
> ./drivers/net/team/team.c:2325:3-10: WARNING: NULL check before dev_{put, hold} functions is not needed.
> 
> Reported-by: Abaci Robot <abaci@linux.alibaba.com>
> Closes: https://bugzilla.openanolis.cn/show_bug.cgi?id=5991
> Signed-off-by: Yang Li <yang.lee@linux.alibaba.com>

Acked-by: Hangbin Liu <liuhangbin@gmail.com>

> ---
>  drivers/net/team/team.c | 3 +--
>  1 file changed, 1 insertion(+), 2 deletions(-)
> 
> diff --git a/drivers/net/team/team.c b/drivers/net/team/team.c
> index d3dc22509ea5..bc50fc3f6913 100644
> --- a/drivers/net/team/team.c
> +++ b/drivers/net/team/team.c
> @@ -2321,8 +2321,7 @@ static struct team *team_nl_team_get(struct genl_info *info)
>  	ifindex = nla_get_u32(info->attrs[TEAM_ATTR_TEAM_IFINDEX]);
>  	dev = dev_get_by_index(net, ifindex);
>  	if (!dev || dev->netdev_ops != &team_netdev_ops) {
> -		if (dev)
> -			dev_put(dev);
> +		dev_put(dev);
>  		return NULL;
>  	}
>  
> -- 
> 2.20.1.7.g153144c
>

Re: [PATCH net-next] team: Remove NULL check before dev_{put, hold}

Posted by patchwork-bot+netdevbpf@kernel.org 2 years, 6 months ago

Hello:

This patch was applied to netdev/net-next.git (main)
by David S. Miller <davem@davemloft.net>:

On Thu, 27 Jul 2023 08:57:41 +0800 you wrote:
> The call netdev_{put, hold} of dev_{put, hold} will check NULL,
> so there is no need to check before using dev_{put, hold},
> remove it to silence the warning:
> 
> ./drivers/net/team/team.c:2325:3-10: WARNING: NULL check before dev_{put, hold} functions is not needed.
> 
> Reported-by: Abaci Robot <abaci@linux.alibaba.com>
> Closes: https://bugzilla.openanolis.cn/show_bug.cgi?id=5991
> Signed-off-by: Yang Li <yang.lee@linux.alibaba.com>
> 
> [...]

Here is the summary with links:
  - [net-next] team: Remove NULL check before dev_{put, hold}
    https://git.kernel.org/netdev/net-next/c/64a37272fa5f

You are awesome, thank you!
-- 
Deet-doot-dot, I am a bot.
https://korg.docs.kernel.org/patchwork/pwbot.html

Re: [PATCH net-next] team: Remove NULL check before dev_{put, hold}

Posted by Simon Horman 2 years, 6 months ago

On Thu, Jul 27, 2023 at 08:57:41AM +0800, Yang Li wrote:
> The call netdev_{put, hold} of dev_{put, hold} will check NULL,
> so there is no need to check before using dev_{put, hold},
> remove it to silence the warning:
> 
> ./drivers/net/team/team.c:2325:3-10: WARNING: NULL check before dev_{put, hold} functions is not needed.
> 
> Reported-by: Abaci Robot <abaci@linux.alibaba.com>
> Closes: https://bugzilla.openanolis.cn/show_bug.cgi?id=5991
> Signed-off-by: Yang Li <yang.lee@linux.alibaba.com>

Reviewed-by: Simon Horman <simon.horman@corigine.com>