linux-kernel - Re: [PATCH v2 15/16] wl1251: Add sysfs file address for setting permanent mac address

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Message-ID: <1386797175.1516.272.camel@bwh-desktop.uk.level5networks.com>
Date:	Wed, 11 Dec 2013 21:26:15 +0000
From:	Ben Hutchings <bhutchings@...arflare.com>
To:	Pali Rohár <pali.rohar@...il.com>
CC:	Dan Williams <dcbw@...hat.com>, Kalle Valo <kvalo@...rom.com>,
	"Luciano Coelho" <luca@...lho.fi>,
	"John W. Linville" <linville@...driver.com>,
	<linux-wireless@...r.kernel.org>, <netdev@...r.kernel.org>,
	<linux-kernel@...r.kernel.org>, <freemangordon@....bg>,
	<aaro.koskinen@....fi>, <pavel@....cz>, <sre@...g0.de>,
	<joni.lapilainen@...il.com>,
	Johannes Berg <johannes@...solutions.net>,
	Felipe Contreras <felipe.contreras@...il.com>
Subject: Re: [PATCH v2 15/16] wl1251: Add sysfs file address for setting
 permanent mac address

On Tue, 2013-12-10 at 20:31 +0100, Pali Rohár wrote:
[...]
> So, if you like this idea, can you help me how to write udev rule 
> which will run my own program (it print mac address) and send mac 
> address when driver ask for mac address in request_firmware? 
> Problem is that default udev rule for firmware trying to load data 
> from /lib/firmware/... but in this case mac address first must be 
> read from special location and converted to correct format.

Unfortunately, udev no longer supports firmware loading during module
loading (unless that was fixed - I don't think it has been).  Loading
firmware *files* still works because the kernel can read those directly
rather than requesting them from udev.

Ben.

-- 
Ben Hutchings, Staff Engineer, Solarflare
Not speaking for my employer; that's the marketing department's job.
They asked us to note that Solarflare product names are trademarked.

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