lkml.org 
[lkml]   [2010]   [May]   [3]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: s2ram slow (radeon) / failing (usb)
On Mon, 3 May 2010, Bruno [UTF-8] Prémont wrote:

> On Mon, 03 May 2010 Alan Stern <stern@rowland.harvard.edu> wrote:
> > You might also want to #define VERBOSE_DEBUG at the start of
> > drivers/usb/core/driver.c, before the first #include.
>
> Still no difference... (will retry with own printk's in ohci's suspend
> code as suggested in other mail)

First of all, have you tried disabling async suspend? Look at
/sys/power/pm_async.

> Suspend output as it goes:

Let's just look at the USB entries:

> [ 241.358651] usb usb1: preparing type suspend, may wakeup
> [ 241.364247] usb usb2: preparing type suspend, may wakeup
> [ 241.369847] usb usb3: preparing type suspend, may wakeup
> [ 241.375443] usb usb4: preparing type suspend, may wakeup
> [ 241.381044] usb usb5: preparing type suspend, may wakeup
> [ 241.386643] usb usb6: preparing type suspend, may wakeup
> [ 241.392244] usb 1-2: preparing type suspend, may wakeup
> [ 241.397762] usb 1-2.1: preparing type suspend, may wakeup

Those are normal.

> [ 241.407504] usbhid 1-2.1:1.1: suspend
> [ 241.407511] usbhid 1-2.1:1.0: suspend

These are HID suspends for the keyboard and mouse interfaces.

> [ 241.407516] usb 1-2.1: type suspend, may wakeup

This is a USB suspend for the KB/mouse device.

> [ 241.443340] hub 1-2:1.0: suspend

Suspend for the embedded hub interface. Next we should see

[....] usb 1-2: type suspend, may wakeup

for the embedded hub device, but we don't. That's the problem. It
must be waiting for something -- goodness knows what.

> [ 241.911502] hub 6-0:1.0: suspend
> [ 241.914928] usb usb6: type suspend, may wakeup
> [ 241.919583] usb usb6: usb_suspend_both: status 0
> [ 241.924448] usb usb6: suspend, may wakeup
> [ 241.928663] hub 5-0:1.0: suspend
> [ 241.932082] usb usb5: type suspend, may wakeup
> [ 241.936794] usb usb5: usb_suspend_both: status 0
> [ 241.941669] usb usb5: suspend, may wakeup
> [ 241.945888] hub 4-0:1.0: suspend
> [ 241.949294] usb usb4: type suspend, may wakeup
> [ 241.953966] usb usb4: usb_suspend_both: status 0
> [ 241.958814] usb usb4: suspend, may wakeup
> [ 241.963069] hub 3-0:1.0: suspend
> [ 241.966452] usb usb3: type suspend, may wakeup
> [ 241.971126] usb usb3: usb_suspend_both: status 0
> [ 241.976015] usb usb3: suspend, may wakeup
> [ 241.980232] hub 2-0:1.0: suspend
> [ 241.983662] usb usb2: type suspend, may wakeup
> [ 241.988316] usb usb2: usb_suspend_both: status 0
> [ 241.993192] usb usb2: suspend, may wakeup
> [ 241.997418] hub 1-0:1.0: suspend

And here we should see

[....] usb usb1: type suspend, may wakeup
etc.

but we don't, because it's waiting for the 1-2 device.

> [ 242.125768] ehci_hcd 0000:00:13.5: suspend
> [ 242.130076] ehci_hcd 0000:00:13.5: PCI INT D disabled
> [ 242.135410] ohci_hcd 0000:00:13.4: suspend
> [ 242.139696] ohci_hcd 0000:00:13.4: PCI INT C disabled
> [ 242.145035] ohci_hcd 0000:00:13.3: suspend
> [ 242.149348] ohci_hcd 0000:00:13.3: PCI INT B disabled
> [ 242.154705] ohci_hcd 0000:00:13.2: suspend
> [ 242.159012] ohci_hcd 0000:00:13.2: PCI INT C disabled
> [ 242.164342] ohci_hcd 0000:00:13.1: suspend
> [ 242.168676] ohci_hcd 0000:00:13.1: PCI INT B disabled

> I guess here PM is waiting for ohci_hcd 0000:00:13.0 to suspend
> and disable its interrupt.
> (and that last ohci device would match the usbhid_resume thread that's
> frozen...)

The 0000:00:13.0 device can't suspend until usb1 does, and usb1 can't
suspend until 1-2 does.

Can you boot the dmesg log for bootup and device detection? It may
indicate what we're missing. Also include the contents of
/sys/kernel/debug/usb/devices.

Alan Stern

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2010-05-03 22:13    [W:0.130 / U:0.136 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site