linux-kernel - Re: [PATCH 01/10] net: stmmac: Enable stmmac main clock when probing hardware

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Date:	Tue, 10 Dec 2013 21:05:29 +0100
From:	Maxime Ripard <maxime.ripard@...e-electrons.com>
To:	Chen-Yu Tsai <wens@...e.org>
Cc:	Giuseppe Cavallaro <peppe.cavallaro@...com>,
	netdev <netdev@...r.kernel.org>,
	Rob Herring <rob.herring@...xeda.com>,
	devicetree <devicetree@...r.kernel.org>,
	linux-arm-kernel <linux-arm-kernel@...ts.infradead.org>,
	linux-kernel <linux-kernel@...r.kernel.org>,
	linux-sunxi <linux-sunxi@...glegroups.com>,
	Srinivas Kandagatla <srinivas.kandagatla@...com>
Subject: Re: [PATCH 01/10] net: stmmac: Enable stmmac main clock when probing
 hardware

Hi,

On Mon, Dec 09, 2013 at 10:43:29AM +0800, Chen-Yu Tsai wrote:
> >> @@ -2759,15 +2760,18 @@ struct stmmac_priv *stmmac_dvr_probe(struct device *device,
> >>               }
> >>       }
> >>
> >> +     clk_disable_unprepare(priv->stmmac_clk);
> >> +
> >
> > Hu? Why do you disable the clock? don't you need it afterwards?
> 
> The clock is enabled in *_open (when the network interface is used),
> and disabled in *_close.

Maybe it is the real issue then.

Why don't you move the clk_disable to _remove then?

Maxime

-- 
Maxime Ripard, Free Electrons
Embedded Linux, Kernel and Android engineering
http://free-electrons.com

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