> -----Original Message----- > From: Sarah Sharp [mailto:sarah.a.sharp@xxxxxxxxxxxxxxx] > Sent: Saturday, October 09, 2010 7:39 AM > To: Xu, Andiry > Cc: linux-usb@xxxxxxxxxxxxxxx; gregkh@xxxxxxx; Alan Stern; Su, Henry; He, > Alex > Subject: Re: [PATCH 2/3 v2 RESEND] xHCI: change xhci_reset_device() to > allocate new device > > I've done some more testing, and Andiry's seven PM patches (mostly) > work, when I apply the two extra patches that are attached. The first > patch fixes the control endpoint issue I described, and the second patch > fixes an issue with persistent USB 3.0 devices across suspend with a > power loss and hibernate. > > Alan, could you look over the second patch? It fixes the issue I was > seeing, but I'm not sure if there are further-reaching implications for > khubd when a USB 3.0 port is not disabled after a hub reset-resume. > > Andiry, I've been testing suspend and hibernate support on my laptop > with an NEC express card. The card isn't powered across the suspend, > and I'm testing with CONFIG_PM_RUNTIME=y and CONFIG_USB_SUSPEND=n. > > Suspend and hibernate work fine with USB 2.0 devices under xHCI. > Inactive USB 3.0 devices also seem to work after both suspend and > hibernate. > > However, I'm seeing an issue that is triggered by playing a movie on a > USB 3.0 hard drive when I attempt to hibernate. The first couple of > times, my xserver or i915 driver seemed to act up (screen blank but > mouse still there, or screen brightness turned completely down with no > response to contrast buttons). > > The third time the hibernate worked successfully, but when I immediately > tried to hibernate it again, the computer rebooted on resume. The > fourth time the PM subsystem seemed to get stuck in the "syncing > filesystems" portion, and bulk endpoint transfers from the USB 3.0 > device kept streaming by. The magic sysreq keys worked, and I was able > to umount the drive and reboot. I haven't been able to get any useful > dmesg output. > > I'm not sure if my issues are caused by my graphics hardware/xserver, > so could you try to reproduce this issue on your own systems? > Hi Sarah, I've tested on 2.6.36-rc7 with Buffalo USB3.0 HDD, playing a movie on it and then use pm-hibernate to enter S4. I've try several times and the movie resumes playing when the system wake up. It may take several seconds for the USB3.0 HDD to be re-initialized, after that it will resume working. The config is set with CONFIG_PM_RUNTIME=y and CONFIG_USB_SUSPEND=n. Does this issue occurs with suspend and CONFIG_USB_SUSPEND=y? Do the two patches you attached help to resolve this issue? Is it the same issue with you another mail mentioning call trace in xhci_endpoint_init()? I will do more tests on my side and try to reproduce this issue. Thanks, Andiry -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
