linux-kernel - Re: [PATCH 01/15] ARM: etm: Don't require clock control

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Date:	Thu, 28 Jun 2012 17:47:57 +0200
From:	Linus Walleij <linus.walleij@...aro.org>
To:	John Stultz <john.stultz@...aro.org>
Cc:	LKML <linux-kernel@...r.kernel.org>,
	Arve Hjønnevåg <arve@...roid.com>,
	Russell King <linux@....linux.org.uk>,
	Paul Gortmaker <paul.gortmaker@...driver.com>,
	Alexander Shishkin <alexander.shishkin@...ux.intel.com>
Subject: Re: [PATCH 01/15] ARM: etm: Don't require clock control

On Thu, Jun 21, 2012 at 12:47 AM, John Stultz <john.stultz@...aro.org> wrote:

> -       clk_enable(t->emu_clk);
> +       else
> +               clk_enable(t->emu_clk);

Take this opportunity to use clk_prepare_enable();

>        etb_unlock(t);
>        t->etb_bufsz = etb_readl(t, ETBR_DEPTH);
> @@ -403,8 +402,10 @@ static int etb_remove(struct amba_device *dev)
>        iounmap(t->etb_regs);
>        t->etb_regs = NULL;
>
> -       clk_disable(t->emu_clk);
> -       clk_put(t->emu_clk);
> +       if (!IS_ERR(t->emu_clk)) {
> +               clk_disable(t->emu_clk);

And clk_disable_uprepare() here.

> +               clk_put(t->emu_clk);
> +       }

After that it's
Acked-by: Linus Walleij <linus.walleij@...aro.org>

Yours,
Linus Walleij
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