linux-kernel - RE: [PATCHv2] arm/tegra: clk

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Message-ID: <74CDBE0F657A3D45AFBB94109FB122FF173E1B48B0@HQMAIL01.nvidia.com>
Date:	Thu, 27 Oct 2011 09:03:54 -0700
From:	Stephen Warren <swarren@...dia.com>
To:	Peter De Schrijver <pdeschrijver@...dia.com>,
	Peter De Schrijver <pdeschrijver@...dia.com>
CC:	Colin Cross <ccross@...roid.com>, Olof Johansson <olof@...om.net>,
	Russell King <linux@....linux.org.uk>,
	"linux-tegra@...r.kernel.org" <linux-tegra@...r.kernel.org>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: RE: [PATCHv2] arm/tegra: clk_get should not be fatal

pdeschrijver@...dia.com wrote at Wednesday, October 26, 2011 2:42 AM:
> The timer and rtc-timer clocks aren't gated by default, so there is no reason
> to crash the system if the dummy enable call failed.
...
>  	clk = clk_get_sys("timer", NULL);
> -	BUG_ON(IS_ERR(clk));
> -	clk_enable(clk);
> +	if (IS_ERR(clk))
> +		pr_warn("Unable to get timer clock\n");
> +	else
> +		clk_enable(clk);

This seems reasonable to me, and is certainly required for Tegra30 support
until we get a full clock tree set up for Tegra30, which I think we'll
probably defer until the common clock infra-structure is in place.

Acked-by: Stephen Warren <swarren@...dia.com>

-- 
nvpublic

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