linux-kernel - Re: [PATCH 04/22] clk: sunxi: move "ahb

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Date:	Sun, 25 May 2014 20:51:01 +0200
From:	Maxime Ripard <maxime.ripard@...e-electrons.com>
To:	Chen-Yu Tsai <wens@...e.org>
Cc:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Samuel Ortiz <sameo@...ux.intel.com>,
	Lee Jones <lee.jones@...aro.org>,
	Rob Herring <robh+dt@...nel.org>,
	Mike Turquette <mturquette@...aro.org>,
	Emilio Lopez <emilio@...pez.com.ar>,
	Linus Walleij <linus.walleij@...aro.org>,
	linux-serial@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
	Hans de Goede <hdegoede@...hat.com>,
	Boris BREZILLON <boris.brezillon@...e-electrons.com>,
	Luc Verhaegen <libv@...net.be>
Subject: Re: [PATCH 04/22] clk: sunxi: move "ahb_sdram" to protected clock
 list

On Fri, May 23, 2014 at 03:51:07PM +0800, Chen-Yu Tsai wrote:
> With sunxi_gates clocks registered with clkdev, we can use the
> protected clocks list to enable the "ahb_sdram" clock, instead
> of looking for it and adding CLK_IGNORE_UNUSED inline in the
> clock setup code.
> 
> Signed-off-by: Chen-Yu Tsai <wens@...e.org>
> ---
>  drivers/clk/sunxi/clk-sunxi.c | 10 ++++------
>  1 file changed, 4 insertions(+), 6 deletions(-)
> 
> diff --git a/drivers/clk/sunxi/clk-sunxi.c b/drivers/clk/sunxi/clk-sunxi.c
> index 3e33bc1..b2c6d12 100644
> --- a/drivers/clk/sunxi/clk-sunxi.c
> +++ b/drivers/clk/sunxi/clk-sunxi.c
> @@ -870,7 +870,6 @@ static void __init sunxi_gates_clk_setup(struct device_node *node,
>  	int qty;
>  	int i = 0;
>  	int j = 0;
> -	int ignore;
>  
>  	reg = of_iomap(node, 0);
>  
> @@ -891,15 +890,12 @@ static void __init sunxi_gates_clk_setup(struct device_node *node,
>  		of_property_read_string_index(node, "clock-output-names",
>  					      j, &clk_name);
>  
> -		/* No driver claims this clock, but it should remain gated */
> -		ignore = !strcmp("ahb_sdram", clk_name) ? CLK_IGNORE_UNUSED : 0;
> -
>  		clk_data->clks[i] = clk_register_gate(NULL, clk_name,
> -						      clk_parent, ignore,
> +						      clk_parent, 0,
>  						      reg + 4 * (i/32), i % 32,
>  						      0, &clk_lock);
>  		WARN_ON(IS_ERR(clk_data->clks[i]));
> -		clk_register_clkdev(clks[i], clk_name, NULL);
> +		clk_register_clkdev(clk_data->clks[i], clk_name, NULL);

I'm fine with the change itself, but shouldn't this part of it be in
the patch that actually add this line?

Looks broken to me otherwise.

Maxime

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

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