linux-kernel - Re: [PATCH] spi: Force the registration of the spidev devices

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Date:	Wed, 13 May 2015 18:43:08 +0100
From:	Mark Brown <broonie@...nel.org>
To:	Michal Suchanek <hramrach@...il.com>
Cc:	Maxime Ripard <maxime.ripard@...e-electrons.com>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Hans de Goede <hdegoede@...hat.com>,
	linux-spi <linux-spi@...r.kernel.org>,
	Martin Sperl <kernel@...tin.sperl.org>
Subject: Re: [PATCH] spi: Force the registration of the spidev devices

On Wed, May 13, 2015 at 05:31:05PM +0200, Michal Suchanek wrote:

> But you know, unused i2c bus can be also connected to "make the board
> catch fire" trace and nobody would notice until somebody has the great
> idea to probe it. Incidentally, both i2c and spi cs are active-low
> iirc.

Someone would need to go and explicitly mark an I2C controller as
enabled on a board for that to happen.

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