On Thu, Aug 09, 2012 at 08:57:13AM +0200, Takashi Iwai wrote: > At Thu, 9 Aug 2012 08:45:23 +0200, > Thierry Reding wrote: > > > > Recent changes to the firmware loading helpers cause drivers to stall > > when firmware is loaded during the module_init() call. The snd-hda-intel > > module requests firmware if the patch= parameter is used to load a patch > > file. This patch works around the problem by deferring the probe in such > > cases, which will cause the module to load successfully and the driver > > binding to the device outside the module_init() call. > > Is the "recent" change meant 3.6 kernel, or in linux-next? > > In anyway, I don't understand why such a change was allowed. Most > drivers do call request_firmware() at the device probing time. > If this really has to be resolved in the driver side, it must be a bug > in the firmware loader core code.
A good explanation of the problem and subsequent discussion can be found
here:
http://article.gmane.org/gmane.linux.drivers.video-input-infrastructure/49975
Thierry
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