linux-kernel - Re: [PATCH v2 1/2] of: Ensure unique names without sacrificing determinism

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Date:	Sat, 24 May 2014 15:10:15 -0300
From:	Ezequiel Garcia <ezequiel@...guardiasur.com.ar>
To:	Grant Likely <grant.likely@...aro.org>
Cc:	devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
	Rob Herring <robh@...nel.org>
Subject: Re: [PATCH v2 1/2] of: Ensure unique names without sacrificing
 determinism

On 23 May 08:36 AM, Grant Likely wrote:
> The way the driver core is implemented, every device using the same bus
> type is required to have a unique name because a symlink to each device
> is created in the appropriate /sys/bus/*/devices directory, and two
> identical names causes a collision.
> 
> The current code handles the requirement by using an globally
> incremented counter that is appended to the device name. It works, but
> it means any change to device registration will change the assigned
> numbers. Instead, if we build up the name by using information from the
> parent nodes, then it can be guaranteed to be unique without adding a
> random number to the end of it.
> 
> Signed-off-by: Grant Likely <grant.likely@...aro.org>

Tested-by: Ezequiel Garcia <ezequiel@...guardiasur.com.ar>

-- 
Ezequiel Garcia, VanguardiaSur
www.vanguardiasur.com.ar
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