Re: [PATCH 0/6] firmware_class: Fix problems with usermodehelper test

From: Rafael J. Wysocki
Date: Mon Mar 26 2012 - 16:33:37 EST

On Monday, March 26, 2012, Greg KH wrote:
> On Mon, Mar 26, 2012 at 12:00:34AM +0200, Rafael J. Wysocki wrote:
> > Hi all,
> >
> > The following series of patches fixes two problems with
> > request_firmware() and request_firmware_nowait() resulting from commit
> > a144c6a6c924aa1da04dd77fb84b89927354fdff
> >
> > PM: Print a warning if firmware is requested when tasks are frozen
> >
> > The first problem is that request_firmware_nowait() may fail if it happens
> > to run in parallel with system suspend. It should't fail in such situations
> > and that is addressed by the first three patches (that code has been discussed
> > with Linus at al already).
> >
> > The second issue is that request_firmware() may be called in a thread which
> > isn't related to system suspend and if suspend happens exactly at that time,
> > request_firmware() will fail (and print a scary warning), although it shouldn't.
> > This problem is addressed by the remaining three patches, which are new.
> At first glance, they all look good to me, thanks for doing this work:
> Acked-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>


> I'm guessing this will go in through one of your trees, right?

That's correct.

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