linux-kernel - Question about loading firmware

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Message-ID: <4F380E2C.3050303@lwfinger.net>
Date:	Sun, 12 Feb 2012 13:08:28 -0600
From:	Larry Finger <Larry.Finger@...inger.net>
To:	LKML <linux-kernel@...r.kernel.org>,
	driverdevel <devel@...verdev.osuosl.org>,
	wireless <linux-wireless@...r.kernel.org>
Subject: Question about loading firmware

Drivers b43 and b43legacy both load their firmware from their probe routines, 
which is a problem with the latest udev implementations, and I'm trying to fix 
that problem.

The complication is that they need to load several (3 or 4) firmware files. When 
I tried to use request_firmware_nowait() to load them in parallel, I got 
warnings that I was trying to create a duplicate name in sysfs. I presume this 
is because each of the tasks has the same name - I used the default THIS_MODULE 
value for the first argument. I'm not sure that I could change that - I don't 
see any examples in the existing source.

If I changed the probe routine to start a workqueue item that called the 
firmware loading routines, could I safely use request_firmware() in that case? 
If so, it would be a clean solution.

Thanks,

Larry

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