[linux-pm] Request for testing remote wakeup during STD

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



Hi!

> There have been reports of problems related to shutting down with remote 
> wakeup enabled on EHCI USB controllers in 2.6.20; see
> 
> 	http://bugzilla.kernel.org/show_bug.cgi?id=7828
> 
> In brief, some people have found that if ehci-hcd is loaded and the 
> controller is suspended when they try to shut down their systems, the 
> machine reboots immediately instead of turning off.  Apparently this is 
> caused by the firmware mistakenly thinking that a remote-wakeup event has 
> occurred.  Admittedly, remote wakeup from a system sleep is still black 
> magic to most of us...
> 
> I wrote a patch to try and fix the problem by turning off EHCI remote
> wakeup from within the driver's shutdown() method.  The patch is here:
> 
> 	http://bugzilla.kernel.org/attachment.cgi?id=10313&action=view
> 
> However I'm concerned that this might affect suspend-to-disk.  Some lucky 
> people have systems which do keep their EHCI controllers in D3hot during 
> STD, and such people might reasonably want Wake-on-USB to work properly.  
> It seems likely that the patch would prevent it from working.

I do not think such "lucky people" exist. And not being able to
control the wakeups.... no I do not think that feature is useful,
yet. KISS.
									Pavel
-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html


[Index of Archives]     [Linux ACPI]     [Netdev]     [Ethernet Bridging]     [Linux Wireless]     [CPU Freq]     [Kernel Newbies]     [Fedora Kernel]     [Security]     [Linux for Hams]     [Netfilter]     [Bugtraq]     [Yosemite News]     [MIPS Linux]     [ARM Linux]     [Linux RAID]     [Linux Admin]     [Samba]

  Powered by Linux