linux-kernel - Re: [RFC] regmap: Add regmap_pipe

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]

Message-ID: <643b0e6a-49a0-00bb-7aed-6d36c1e0bb6b@intel.com>
Date:	Fri, 17 Jun 2016 10:04:27 +0300
From:	Crestez Dan Leonard <leonard.crestez@...el.com>
To:	Geert Uytterhoeven <geert@...ux-m68k.org>
Cc:	Mark Brown <broonie@...nel.org>,
	linux-spi <linux-spi@...r.kernel.org>,
	Wolfram Sang <wsa@...-dreams.de>,
	Linux I2C <linux-i2c@...r.kernel.org>,
	Jonathan Cameron <jic23@...nel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [RFC] regmap: Add regmap_pipe_read API

On 06/16/2016 06:43 PM, Geert Uytterhoeven wrote:
> Hi Leonard,
> 
> On Thu, Jun 16, 2016 at 5:24 PM, Crestez Dan Leonard
> <leonard.crestez@...el.com> wrote:
>> The regmap API usually assumes that bulk read operations will read a
>> range of registers but some I2C/SPI devices have certain registers for
>> which a such a read operation will return data from an internal FIFO
>> instead. Add an explicit API to support bulk read with pipe rather than
>> range semantics.
> 
> Please settle on either "fifo" or "pipe", instead of mixing both.
> Personally, I prefer the former.

Well, it doesn't have to be a fifo. The device can return data from some
other kind of buffer (maybe a stack). I can adjust the documentation to
clarify.

I considered naming it something like regmap_multi_read_one_reg or
something but regmap_pipe_read sounds reasonable and short.