linux-kernel - Re: [PATCH] spi: Add option to bind spidev to all chipselects

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Message-ID: <20150513110541.GE3066@sirena.org.uk>
Date:	Wed, 13 May 2015 12:05:41 +0100
From:	Mark Brown <broonie@...nel.org>
To:	Michal Suchanek <hramrach@...il.com>
Cc:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	linux-kernel@...r.kernel.org, Hans de Goede <hdegoede@...hat.com>,
	linux-spi@...r.kernel.org, Martin Sperl <kernel@...tin.sperl.org>,
	Maxime Ripard <maxime.ripard@...e-electrons.com>
Subject: Re: [PATCH] spi: Add option to bind spidev to all chipselects

On Wed, May 13, 2015 at 09:34:41AM -0000, Michal Suchanek wrote:
> Bypass the check if CS is in use for spidev devices if CONFIG_SPIDEV_SHADOW is
> set.  Rename spidev devices to avoid sysfs conflict.

To repeat my previous feedback I don't see any way in which this is
sane, having two drivers simultaneously controlling the same device is
an obviously terrible idea.

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