linux-kernel - Re: [PATCH v2 5/6] of_spi: Add fetching of of_gpio flags to of_spi_register

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: <511A0DB6.1080702@gaisler.com>
Date:	Tue, 12 Feb 2013 10:39:02 +0100
From:	Andreas Larsson <andreas@...sler.com>
To:	Grant Likely <grant.likely@...retlab.ca>
CC:	Rob Herring <rob.herring@...xeda.com>,
	Linus Walleij <linus.walleij@...aro.org>,
	devicetree-discuss@...ts.ozlabs.org,
	spi-devel-general@...ts.sourceforge.net,
	linux-kernel@...r.kernel.org, software@...sler.com
Subject: Re: [PATCH v2 5/6] of_spi: Add fetching of of_gpio flags to of_spi_register_master

On 2013-02-11 01:22, Grant Likely wrote:
> On Tue, 29 Jan 2013 15:53:42 +0100, Andreas Larsson <andreas@...sler.com> wrote:
>> When using a gpio chip select with a OF_GPIO_ACTIVE_LOW flag, this needs to be
>> known to the controller driver.
>>
>> Signed-off-by: Andreas Larsson <andreas@...sler.com>
>
> Out of curiosity, what do you need the flags for? Polarity of the CS
> signal? I think it is long past time to revisit baking polarity control
> into core of gpiolib. Would you mind investigating doing that instead of
> having to manage it manually in each and every driver?

I don't even need it on my hardware. It seemed like a good thing to have 
via of_spi_register_master. I am OK with just dropping this.

Cheers,
Andreas

--
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/