linux-kernel - Re: [PATCH v3 1/7] clk: introduce clk_div

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, 18 Jun 2015 12:48:16 -0700
From:	Stephen Boyd <sboyd@...eaurora.org>
To:	Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Cc:	linux-kernel@...r.kernel.org, Sascha Hauer <kernel@...gutronix.de>,
	Peter De Schrijver <pdeschrijver@...dia.com>,
	Tero Kristo <t-kristo@...com>,
	Russell King <linux@....linux.org.uk>,
	Dinh Nguyen <dinguyen@...nsource.altera.com>
Subject: Re: [PATCH v3 1/7] clk: introduce clk_div_mask() helper

On 03/31, Andy Shevchenko wrote:
> diff --git a/include/linux/clk-provider.h b/include/linux/clk-provider.h
> index 5591ea7..20b0b67 100644
> --- a/include/linux/clk-provider.h
> +++ b/include/linux/clk-provider.h
> @@ -353,6 +353,11 @@ struct clk_divider {
>  	spinlock_t	*lock;
>  };
>  
> +static inline unsigned long clk_div_mask(u8 width)
> +{
> +	return (1 << width) - 1;
> +}
> +

Why not just change drivers to use GENMASK? It's a proven and
tested way to generate a bitmask.

So I'd rather see drivers converted to use that macro directly
especially because the mask may need to start at some bit that
isn't 0.

-- 
Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum,
a Linux Foundation Collaborative Project
--
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/