linux-kernel - Re: [PATCH net v1] net:bonding:Fix error checking for debugfs_create

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Date:   Thu, 13 Jul 2023 08:49:15 -0700
From:   Jay Vosburgh <jay.vosburgh@...onical.com>
To:     Wang Ming <machel@...o.com>
cc:     Andy Gospodarek <andy@...yhouse.net>,
        "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>,
        Yufeng Mo <moyufeng@...wei.com>,
        Guangbin Huang <huangguangbin2@...wei.com>,
        netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
        opensource.kernel@...o.com
Subject: Re: [PATCH net v1] net:bonding:Fix error checking for debugfs_create_dir()

Wang Ming <machel@...o.com> wrote:

>The debugfs_create_dir() function returns error pointers,
>it never returns NULL. Most incorrect error checks were fixed,
>but the one in bond_create_debugfs() was forgotten.
>
>Fix the remaining error check.
>
>Signed-off-by: Wang Ming <machel@...o.com>

	Seems fine to me; note that almost nobody uses this as bonding
debugfs is hidden behind !CONFIG_NET_NS.

Acked-by: Jay Vosburgh <jay.vosburgh@...onical.com>

	-J

>Fixes: 52333512701b ("net: bonding: remove unnecessary braces")
>---
> drivers/net/bonding/bond_debugfs.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
>diff --git a/drivers/net/bonding/bond_debugfs.c b/drivers/net/bonding/bond_debugfs.c
>index 594094526648..d4a82f276e87 100644
>--- a/drivers/net/bonding/bond_debugfs.c
>+++ b/drivers/net/bonding/bond_debugfs.c
>@@ -88,7 +88,7 @@ void bond_create_debugfs(void)
> {
> 	bonding_debug_root = debugfs_create_dir("bonding", NULL);
> 
>-	if (!bonding_debug_root)
>+	if (IS_ERR(bonding_debug_root))
> 		pr_warn("Warning: Cannot create bonding directory in debugfs\n");
> }
> 
>-- 
>2.25.1
>
>