From: Julia Lawall <julia.lawall@lip6.fr>
To: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Cc: andrew@lunn.ch, vivien.didelot@savoirfairelinux.com,
f.fainelli@gmail.com, netdev@vger.kernel.org,
linux-kernel@vger.kernel.org, kernel-janitors@vger.kernel.org
Subject: Re: [PATCH] net: dsa: loop: Free resources if initialization is deferred
Date: Wed, 10 May 2017 12:30:39 +0800 (SGT) [thread overview]
Message-ID: <alpine.DEB.2.20.1705101229410.3326@hadrien> (raw)
In-Reply-To: <20170510041503.29363-1-christophe.jaillet@wanadoo.fr>
On Wed, 10 May 2017, Christophe JAILLET wrote:
> Free some devm'allocated memory in case of deferred driver initialization.
> This avoid to waste some memory in such a case.
I really think it would be helpful to mention the special behavior of
-EPROBE_DEFER. It doesn't take much space, and it coud be helpful to
someone in the future.
julia
>
> Suggested-by: Joe Perches <joe@perches.com>
> Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
> ---
> drivers/net/dsa/dsa_loop.c | 5 ++++-
> 1 file changed, 4 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/net/dsa/dsa_loop.c b/drivers/net/dsa/dsa_loop.c
> index a19e1781e9bb..557afb418320 100644
> --- a/drivers/net/dsa/dsa_loop.c
> +++ b/drivers/net/dsa/dsa_loop.c
> @@ -260,8 +260,11 @@ static int dsa_loop_drv_probe(struct mdio_device *mdiodev)
> return -ENOMEM;
>
> ps->netdev = dev_get_by_name(&init_net, pdata->netdev);
> - if (!ps->netdev)
> + if (!ps->netdev) {
> + devm_kfree(&mdiodev->dev, ps);
> + devm_kfree(&mdiodev->dev, ds);
> return -EPROBE_DEFER;
> + }
>
> pdata->cd.netdev[DSA_LOOP_CPU_PORT] = &ps->netdev->dev;
>
> --
> 2.11.0
>
> --
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>
prev parent reply other threads:[~2017-05-10 4:30 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-05-10 4:15 [PATCH] net: dsa: loop: Free resources if initialization is deferred Christophe JAILLET
2017-05-10 4:30 ` Julia Lawall [this message]
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