Re: [PATCH] USB: add usbfs stubs for suspend, resume, etc.

[Alan Stern <stern@xxxxxxxxxxxxxxxxxxx>]

On Mon, 3 Dec 2007, Oliver Neukum wrote:

> Am Montag, 3. Dezember 2007 21:43:11 schrieb Alan Stern:
> > THis patch (as1022) adds stub methods for suspend/resume/reset_resume
> > and pre-rreset/post-reset to the usbfs_driver.  There isn't much they
> > can do, since there's no way to inform a user task about any of these
> 
> In this case, shouldn't resume/reset_resume/post_reset report
> errors?

Well, no.  That would be just as bad as not having the stubs in the 
first place.

Not only is it impossible to tell user-level drivers about suspend, 
etc. events, it's also not possible to tell them that they have been 
unbound!  So I wanted to be conservative and keep the kernel's current 
behavior: The suspend/resume/reset happens and the user-level driver is 
blissfully igorant of it.

Alan Stern


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