linux-kernel - RE: [PATCH E 11/14] OMAP clock: track child clocks

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Date:	Tue, 24 Feb 2009 06:35:37 -0600
From:	"Woodruff, Richard" <r-woodruff2@...com>
To:	Russell King - ARM Linux <linux@....linux.org.uk>
CC:	Paul Walmsley <paul@...an.com>,
	"linux-arm-kernel@...ts.arm.linux.org.uk" 
	<linux-arm-kernel@...ts.arm.linux.org.uk>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-omap@...r.kernel.org" <linux-omap@...r.kernel.org>,
	Tony Lindgren <tony@...mide.com>
Subject: RE: [PATCH E 11/14] OMAP clock: track child clocks


> From: Russell King - ARM Linux [mailto:linux@....linux.org.uk]
> Sent: Monday, February 23, 2009 10:04 AM
> To: Woodruff, Richard

> Ack?

Ack.

> diff --git a/arch/arm/plat-omap/clock.c b/arch/arm/plat-omap/clock.c
> index 08baa18..b2d9e1f 100644
> --- a/arch/arm/plat-omap/clock.c
> +++ b/arch/arm/plat-omap/clock.c
> @@ -144,12 +144,14 @@ int clk_set_parent(struct clk *clk, struct clk *parent)
>               return ret;
>
>       spin_lock_irqsave(&clockfw_lock, flags);
> -     if (arch_clock->clk_set_parent)
> -             ret = arch_clock->clk_set_parent(clk, parent);
> -     if (ret == 0) {
> -             if (clk->recalc)
> -                     clk->rate = clk->recalc(clk);
> -             propagate_rate(clk);
> +     if (clk->usecount == 0) {
> +             if (arch_clock->clk_set_parent)
> +                     ret = arch_clock->clk_set_parent(clk, parent);
> +             if (ret == 0) {
> +                     if (clk->recalc)
> +                             clk->rate = clk->recalc(clk);
> +                     propagate_rate(clk);
> +             }
>       }
>       spin_unlock_irqrestore(&clockfw_lock, flags);
>

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