Re: [RESEND][PATCH] Bluetooth: Make request workqueue freezable

[Takashi Iwai]

At Thu, 21 May 2015 11:26:17 -0400 (EDT),
Alan Stern wrote:
> 
> On Thu, 21 May 2015, Takashi Iwai wrote:
> 
> > At Thu, 21 May 2015 10:18:08 -0400 (EDT),
> > Alan Stern wrote:
> > > 
> > > On Thu, 21 May 2015, Takashi Iwai wrote:
> > > 
> > > > Then avoiding the failed firmware is no solution, indeed.
> > > > If it's a new probe, it should be never executed during resume.
> > > 
> > > Can you expand this comment?  What's wrong with probing during resume?
> > 
> > Well, if the probe requires the access to a user-space file, it can't
> > be done during resume.  That's the very problem we're seeing now.
> > The firmware loader can't help much alone if it's a new device
> > object.
> 
> But the same thing happens during early boot, if the driver is built 
> into the kernel.  When the probe occurs, userspace isn't up and running 
> yet, so the firmware loader can't do anything.
> 
> Why should probe during resume be any worse than probe during early 
> boot?

The early boot has initrd, so the files can be there.  But the resume
has no way to fetch the file except for cached data.


Takashi
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