linux-kernel - Re: [RFC PATCH net-next 8/8] net: dsa: mt7530: do not clear config->supported

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20240115214629.ncdzoaawmw4gi7rk@skbuf>
Date: Mon, 15 Jan 2024 23:46:29 +0200
From: Vladimir Oltean <olteanv@...il.com>
To: Arınç ÜNAL <arinc.unal@...nc9.com>
Cc: Daniel Golle <daniel@...rotopia.org>,
	Landen Chao <Landen.Chao@...iatek.com>,
	DENG Qingfang <dqfext@...il.com>,
	Sean Wang <sean.wang@...iatek.com>, Andrew Lunn <andrew@...n.ch>,
	Florian Fainelli <f.fainelli@...il.com>,
	"David S. Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>,
	Matthias Brugger <matthias.bgg@...il.com>,
	AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>,
	mithat.guner@...ont.com, erkin.bozoglu@...ont.com,
	Luiz Angelo Daros de Luca <luizluca@...il.com>,
	netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org,
	linux-mediatek@...ts.infradead.org
Subject: Re: [RFC PATCH net-next 8/8] net: dsa: mt7530: do not clear
 config->supported_interfaces

On Sat, Jan 13, 2024 at 01:25:29PM +0300, Arınç ÜNAL wrote:
> There's no need to clear the config->supported_interfaces bitmap before
> reporting the supported interfaces as all bits in the bitmap will already
> be initialized to zero when the phylink_config structure is allocated.
> There's no code that would change the bitmap beforehand. Remove it.
> 
> Signed-off-by: Arınç ÜNAL <arinc.unal@...nc9.com>
> Acked-by: Daniel Golle <daniel@...rotopia.org>
> ---

Yes, the "config" pointer points to &dp->phylink_config, and "dp" is
allocated by dsa_port_touch() with kzalloc(), so all its fields are
filled with zeroes.

Reviewed-by: Vladimir Oltean <olteanv@...il.com>