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Message-Id: <20100203115956.cb479447.undefined@pobox.com> Date: Wed, 3 Feb 2010 11:59:56 -0600 From: Corey Wright <undefined@...ox.com> To: Alan Stern <stern@...land.harvard.edu> Cc: Greg KH <gregkh@...e.de>, <stable@...nel.org>, <linux-kernel@...r.kernel.org> Subject: Re: regression in 2.6.27.45 with usb and suspend-to-disk On Wed, 3 Feb 2010 10:05:27 -0500 (EST) Alan Stern <stern@...land.harvard.edu> wrote: > On Wed, 3 Feb 2010, Corey Wright wrote: > > > 2.6.27.45 will only suspend-to-disk once without rebooting. every > > attempt to suspend-to-disk after the first attempt results in "pm_op(): > > usb_dev_freeze +0x0/0xa returns -16" and "PM: Device usb1 failed to > > freeze: error -16". reverting commit > > 4fbebe26d7a5eed6c1900bf2142b68af7df38462 > > (http://git.kernel.org/?p=linux/kernel/git/stable/linux-2.6.27.y.git;a=commit;h=4fbebe26d7a5eed6c1900bf2142b68af7df38462) > > fixes the problem. > > > > this problem exhibits itself on both a x86-64 desktop and i386 netbook > > (though the reverted commit was only tested on the x86-64 desktop). the > > affected computers are different architectures, different distributions > > (debian lenny vs ubuntu hardy), and different kernel configs (but > > unchanged since 2.6.27.23), so i am fairly certain this is a regression > > in 2.6.27.45 and not the result of an environment change. > > > > i normally use the pm-hibernate command to suspend to disk, but to > > isolate the problem i used the kernel interfaces directly (as > > demonstrated in the transcript below). > > > > i can provide any other information necessary (eg .config, dmesg, lsusb) > > and i am willing to test patches. > > Please build a kernel with CONFIG_USB_DEBUG enabled and post a dmesg > log showing the problem during the second hibernation attempt. [ 675.443474] PM: Syncing filesystems ... done. [ 675.576353] Freezing user space processes ... (elapsed 0.00 seconds) done. [ 675.606968] Freezing remaining freezable tasks ... (elapsed 0.00 seconds) done. [ 675.629249] PM: Shrinking memory... .-.\.|.done (3129 pages freed) [ 679.547522] PM: Freed 12516 kbytes in 3.90 seconds (3.20 MB/s) [ 679.565065] Suspending console(s) (use no_console_suspend to debug) [ 679.585425] uhci_hcd 0000:00:10.0: release dev 2 ep81-INT, period 8, phase 4, 118 us [ 679.585453] hub 2-0:1.0: hub_suspend [ 679.585460] usb usb2: bus suspend [ 679.585463] usb usb2: suspend_rh [ 679.585534] hub 1-0:1.0: hub_suspend [ 679.585538] usb usb1: bus suspend [ 679.585542] ehci_hcd 0000:00:10.4: suspend root hub [ 679.585547] ehci_hcd 0000:00:10.4: suspend failed because port 8 is resuming [ 679.585551] usb usb1: bus suspend fail, err -16 [ 679.585554] hub 1-0:1.0: hub_resume [ 679.585585] hub 1-0:1.0: port 7: status 0503 change 0000 [ 679.585590] hub 1-0:1.0: port 8: status 0503 change 0000 [ 679.585595] pm_op(): usb_dev_freeze+0x0/0xa returns -16 [ 679.585607] PM: Device usb1 failed to freeze: error -16 [ 679.585696] usb usb2: usb resume [ 679.585699] usb usb2: wakeup_rh [ 679.624016] hub 2-0:1.0: hub_resume [ 679.624026] hub 2-0:1.0: port 1: status 0303 change 0000 [ 679.624051] uhci_hcd 0000:00:10.0: reserve dev 2 ep81-INT, period 8, phase 4, 118 us [ 679.722862] Restarting tasks ... <7>hub 1-0:1.0: state 7 ports 8 chg 0000 evt 0000 [ 679.747221] hub 2-0:1.0: state 7 ports 2 chg 0000 evt 0000 [ 679.747251] done. corey -- undefined@...ox.com -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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