From mboxrd@z Thu Jan  1 00:00:00 1970
From: Alan Jenkins <alan-jenkins@tuffmail.co.uk>
Date: Sun, 16 Aug 2009 08:46:15 +0000
Subject: Re: [PATCH] rules: avoid reading DRIVER for devices without modalias
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List-Id: <linux-hotplug.vger.kernel.org>
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To: linux-hotplug@vger.kernel.org

Marco d'Itri wrote:
> On Jun 03, Alan Jenkins <alan-jenkins@tuffmail.co.uk> wrote:
>
>   
>> DRIVER requires a readlink() in sysfs.  The MODALIAS key is provided by
>> uevent and requires no additional read.  Test MODALIAS first.
>>     
> What is the point of checking both DRIVER and ENV{MODALIAS}?
> The Debian rules files always checked only ENV{MODALIAS}.
>   
I think the idea is to avoid calling modprobe if the driver was built 
into the kernel (or the module is already loaded).

Alan