linux-kernel - Re: [PATCH v2 05/10] clk: berlin: add driver for BG2x complex divider cells

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Thu, 15 May 2014 09:56:59 +0200
From:	Alexandre Belloni <alexandre.belloni@...e-electrons.com>
To:	Sebastian Hesselbarth <sebastian.hesselbarth@...il.com>
Cc:	Mike Turquette <mturquette@...aro.org>,
	Jisheng Zhang <jszhang@...vell.com>,
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 05/10] clk: berlin: add driver for BG2x complex
 divider cells

On 14/05/2014 at 22:15:16 +0200, Sebastian Hesselbarth wrote :
> +static u8 berlin2_div_get_parent(struct clk_hw *hw)
> +{
> +	struct berlin2_div *div = to_berlin2_div(hw);
> +	struct berlin2_div_map *map = &div->map;
> +	u32 reg;
> +	u8 index = 0;
> +
> +	if (div->lock)
> +		spin_lock(div->lock);
> +
> +	/* PLL_SWITCH == 0 is index 0 */
> +	reg = readl_relaxed(div->base + map->pll_switch_offs);
> +	reg &= BIT(map->pll_switch_shift);
> +	if (reg) {
> +		reg = readl_relaxed(div->base + map->pll_select_offs);
> +		reg >>= map->pll_select_shift;
> +		reg &= PLL_SELECT_MASK;
> +		index = 1 + reg;

After getting more insight, I think we don't need to add 1, see my
comment on the next patchs.


-- 
Alexandre Belloni, Free Electrons
Embedded Linux, Kernel and Android engineering
http://free-electrons.com
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/