On Mon, 25 Apr 2005, David Brownell wrote: > On Monday 25 April 2005 8:36 am, Alan Stern wrote: > > On Sun, 24 Apr 2005, Alan Stern wrote: > > > > > I tried this out with an OHCI controller and it seemed to work. I'll > > > post > > > the patches tomorrow. > > > > > > But I encountered a problem with resume-detect interrupt handling. > > > Probably this has nothing to do my changes and was present all along, but > > > I haven't tested the vanilla driver to make sure. I'll do that next. > > > > FYI Yes, the vanilla driver behaved the same way. > > Which way -- the sysfs state being irrelevant? (As expected.) > Or the INTR_RD appearing a lot? (Never seen before in extensive usage.) > If the latter, I'll suspect one of your usbcore/hcd changes ...
Both ways, but the INTR_RD one is the problem. Even that test had Greg's usb-2.6.12-rc3.patch applied, so I'll do it again later with an unpatched 2.6.12-rc3. > > This morning I tried testing an EHCI controller. Its behavior was even > > more puzzling. After I suspended the root hub and its interface, plugging > > or unplugging a device had no effect at all! The driver didn't wake up > > and the port change wasn't recognized until I resumed the root hub by > > hand. This was on a regular Intel ICH4 motherboard: > > Again, never seen that behavior. It's worked just fine for me, as > recently as when I submitted those PCI resume fixes. Tried again with an unpatched 2.6.12-rc3 kernel under Fedora Core 3. Here's a captured serial-console log, edited only to remove typing mistakes. It shows exactly what's going on. Alan Stern [EMAIL PROTECTED] ~]# uname -a Linux iolanthe.rowland.org 2.6.12-rc3 #2 SMP Tue Apr 26 14:44:33 EDT 2005 i686 i686 i386 GNU/Linux [EMAIL PROTECTED] ~]# echo /bin/true >/proc/sys/kernel/hotplug [EMAIL PROTECTED] ~]# rmmod uhci-hcd [EMAIL PROTECTED] ~]# rmmod ehci-hcd [EMAIL PROTECTED] ~]# [EMAIL PROTECTED] ~]# SysRq : Changing Loglevel Loglevel set to 9 [EMAIL PROTECTED] ~]# modprobe ehci-hcd ehci_hcd: block sizes: qh 128 qtd 96 itd 192 sitd 96 ACPI: PCI Interrupt 0000:00:1d.7[D] -> GSI 23 (level, low) -> IRQ 23 PCI: Setting latency timer of device 0000:00:1d.7 to 64 ehci_hcd 0000:00:1d.7: Intel Corporation 82801DB/DBM (ICH4/ICH4-M) USB2 EHCI Controller ehci_hcd 0000:00:1d.7: reset hcs_params 0x103206 dbg=1 cc=3 pcc=2 ordered !ppc ports=6 ehci_hcd 0000:00:1d.7: reset hcc_params 6871 thresh 7 uframes 1024 64 bit addr ehci_hcd 0000:00:1d.7: capability 0001 at 68 ehci_hcd 0000:00:1d.7: new USB bus registered, assigned bus number 1 ehci_hcd 0000:00:1d.7: irq 23, io mem 0xffa7fc00 ehci_hcd 0000:00:1d.7: reset command 080002 (park)=0 ithresh=8 period=1024 Reset HALT PCI: cache line size of 128 is not supported by device 0000:00:1d.7 ehci_hcd 0000:00:1d.7: init command 010001 (park)=0 ithresh=1 period=1024 RUN ehci_hcd 0000:00:1d.7: USB 2.0 initialized, EHCI 1.00, driver 10 Dec 2004 ehci_hcd 0000:00:1d.7: supports USB remote wakeup usb usb1: default language 0x0409 usb usb1: new device strings: Mfr=3, Product=2, SerialNumber=1 usb usb1: Product: Intel Corporation 82801DB/DBM (ICH4/ICH4-M) USB2 EHCI Controller usb usb1: Manufacturer: Linux 2.6.12-rc3 ehci_hcd usb usb1: SerialNumber: 0000:00:1d.7 usb usb1: hotplug usb usb1: adding 1-0:1.0 (config #1, interface 0) hub 1-0:1.0: usb_probe_interface hub 1-0:1.0: usb_probe_interface - got id hub 1-0:1.0: USB hub found hub 1-0:1.0: 6 ports detected hub 1-0:1.0: standalone hub hub 1-0:1.0: ganged power switching hub 1-0:1.0: individual port over-current protection hub 1-0:1.0: Single TT hub 1-0:1.0: TT requires at most 8 FS bit times hub 1-0:1.0: power on to power good time: 20ms hub 1-0:1.0: local power source is good hub 1-0:1.0: enabling power on all ports hub 1-0:1.0: state 5 ports 6 chg 0000 evt 0000 usb 1-0:1.0: hotplug [EMAIL PROTECTED] ~]# [EMAIL PROTECTED] ~]# cd /sys/devices/pci*/*1d.7/usb1 [EMAIL PROTECTED] usb1]# ls 1-0:1.0/ bDeviceSubClass bus@ idProduct product bcdDevice bmAttributes configuration idVendor serial bConfigurationValue bMaxPower detach_state manufacturer speed bDeviceClass bNumConfigurations devnum maxchild version bDeviceProtocol bNumInterfaces driver@ power/ [EMAIL PROTECTED] usb1]# [EMAIL PROTECTED] usb1]# echo -n 3 >*0/power/state [EMAIL PROTECTED] usb1]# echo -n 3 >power/state usb usb1: usb suspend [EMAIL PROTECTED] usb1]# [EMAIL PROTECTED] usb1]# # Plug in USB device -- nothing happens [EMAIL PROTECTED] usb1]# [EMAIL PROTECTED] usb1]# echo -n 0 >power/state ehci_hcd 0000:00:1d.7: resume root hub usb usb1: usb resume hub 1-0:1.0: state 5 ports 6 chg 0000 evt 0000 hub 1-0:1.0: port 4, status 0501, change 0000, 480 Mb/s ehci_hcd 0000:00:1d.7: port 4 high speed ehci_hcd 0000:00:1d.7: GetStatus port 4 status 001005 POWER sig=se0 PE CONNECT usb 1-4: new high speed USB device using ehci_hcd and address 2 ehci_hcd 0000:00:1d.7: port 4 high speed ehci_hcd 0000:00:1d.7: GetStatus port 4 status 001005 POWER sig=se0 PE CONNECT usb 1-4: default language 0x0409 usb 1-4: new device strings: Mfr=1, Product=2, SerialNumber=3 usb 1-4: Product: Memorex TD 2B usb 1-4: Manufacturer: usb 1-4: SerialNumber: 07460E030679 usb 1-4: hotplug usb 1-4: adding 1-4:1.0 (config #1, interface 0) usb 1-4:1.0: hotplug [EMAIL PROTECTED] usb1]# [EMAIL PROTECTED] usb1]# echo -n 3 >*0/power/state usb 1-4: usb suspend [EMAIL PROTECTED] usb1]# echo -n 3 >power/state usb usb1: usb suspend [EMAIL PROTECTED] usb1]# [EMAIL PROTECTED] usb1]# # Unplug USB device -- nothing happens [EMAIL PROTECTED] usb1]# [EMAIL PROTECTED] usb1]# echo -n 0 >power/state ehci_hcd 0000:00:1d.7: resume root hub usb usb1: usb resume usb 1-4: usb resume ehci_hcd 0000:00:1d.7: devpath 4 ep0in 3strikes usb 1-4: gone after usb resume? status -71 hub 1-0:1.0: resume port 4 --> -71 hub 1-0:1.0: logical disconnect on port 4 hub 1-0:1.0: state 5 ports 6 chg 0010 evt 0000 hub 1-0:1.0: port 4, status 0100, change 0000, 12 Mb/s usb 1-4: USB disconnect, address 2 usb 1-4: usb_disable_device nuking all URBs usb 1-4: unregistering interface 1-4:1.0 usb 1-4:1.0: hotplug usb 1-4: unregistering device usb 1-4: hotplug hub 1-0:1.0: state 5 ports 6 chg 0000 evt 0000 [EMAIL PROTECTED] usb1]# ------------------------------------------------------- SF.Net email is sponsored by: Tell us your software development plans! 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