Re: Firmware loading problem

From: Manuel Estrada Sainz (
Date: Tue Jul 22 2003 - 09:55:47 EST

On Tue, Jul 22, 2003 at 04:45:28PM +0200, Marcel Holtmann wrote:
> Hi,
> I installed linux-2.6.0-test1-ac2 and tried to port my driver for the
> BlueFRITZ! USB Bluetooth dongle to 2.6. This device needs a firmware
> download and I want to use the new firmware class for getting the
> firmware file from userspace. After reading the documentation and
> testing the driver samples I got the results that I expected.
> My problem is now that the firmware loader is not working with my
> firmware file and it seems that this is a problem of the file size,
> because copying small files through the same interface is working fine.
> This is the file I want to load:
> -rw-r--r-- 1 holtmann staff 418352 Jul 11 12:38 bfubase.frm
> I have written my own firmware.agent hotplug script, which looks in
> general something like this:
> echo 1 > $LOADING
> cp bfubase.frm $DATA
> echo 0 > $LOADING
> Loading the above firmware file through this interface results in
> different behaviours. The results are complete freezes, instant reboots,
> X server crashes with black screens and sometimes I see an oops about
> virtual memory, but it goes bye bye too fast to let me do anything
> useful with it.

 Could you send me a tarball with a sample showing the problem. If
 possible I would like to do "make test" and have it compile and crash
 the system appropriately :)
> Are their any limitations with the sysfs binary file interface?

 Not that I know of. But I am willing to learn :)



--- Manuel Estrada Sainz <>
------------------------ <> -------------------
Let us have the serenity to accept the things we cannot change, courage to
change the things we can, and wisdom to know the difference.
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