linux-kernel - Re: [PATCH] spi: Check conflicting CS based on spi->chip

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Message-ID: <20140109143604.GA12858@sirena.org.uk>
Date:	Thu, 9 Jan 2014 14:36:04 +0000
From:	Mark Brown <broonie@...nel.org>
To:	Mika Westerberg <mika.westerberg@...ux.intel.com>
Cc:	linux-spi@...r.kernel.org,
	Jarkko Nikula <jarkko.nikula@...ux.intel.com>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] spi: Check conflicting CS based on spi->chip_select
 instead of device name

On Thu, Jan 09, 2014 at 04:27:29PM +0200, Mika Westerberg wrote:
> On Thu, Jan 09, 2014 at 02:06:46PM +0000, Mark Brown wrote:

> > This actually also points out another issue - if we have two instances
> > of a device on different buses they could end up with the same
> > dev_name() if they have the same chip select.  Hrm.

> I don't think that can happen, at least in case of ACPI, since each ACPI
> device has unique name, such as 'INT33C0:00' - the ':00' suffix is the
> "instance" number ACPI core gives for devices.

That's OK then.

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