On Wed, 28 Feb 2007, Jon Smirl wrote: > On 2/28/07, Alan Stern <[EMAIL PROTECTED]> wrote: > > I can't tell just from the end results. Post the dmesg log showing what > > happened during boot-up and we'll see.
Skipping irrelevant parts of the log... > io scheduler noop registered > io scheduler anticipatory registered > io scheduler deadline registered > io scheduler cfq registered (default) On my system, which is similar to yours, this is where the UHCI and EHCI controllers are detected. The driver modules are loaded later. ... > usbcore: registered new interface driver usbfs > usbcore: registered new interface driver hub > usbcore: registered new device driver usb Apparently ehci-hcd gets loaded somewhere in here. It doesn't print a banner line, so we can't be sure. > USB Universal Host Controller Interface driver v3.0 That's the banner line for uhci-hcd. > ACPI: PCI Interrupt 0000:00:1d.7[D] -> GSI 23 (level, low) -> IRQ 18 > PCI: Setting latency timer of device 0000:00:1d.7 to 64 > ehci_hcd 0000:00:1d.7: EHCI Host Controller > ehci_hcd 0000:00:1d.7: new USB bus registered, assigned bus number 1 > ehci_hcd 0000:00:1d.7: debug port 1 > PCI: cache line size of 128 is not supported by device 0000:00:1d.7 > ehci_hcd 0000:00:1d.7: irq 18, io mem 0xffa80800 > ehci_hcd 0000:00:1d.7: USB 2.0 started, EHCI 1.00, driver 10 Dec 2004 > usb usb1: configuration #1 chosen from 1 choice > hub 1-0:1.0: USB hub found > hub 1-0:1.0: 8 ports detected The EHCI controller was probed before any of the UHCI controllers. Hence the loading of the two drivers must have occurred in parallel; if the loading had been serialized then the EHCI probing couldn't have come between the uhci-hcd banner line and the UHCI probing. Next the UHCI controllers get probed. > ACPI: PCI Interrupt 0000:00:1d.0[A] -> GSI 16 (level, low) -> IRQ 19 > PCI: Setting latency timer of device 0000:00:1d.0 to 64 > uhci_hcd 0000:00:1d.0: UHCI Host Controller > uhci_hcd 0000:00:1d.0: new USB bus registered, assigned bus number 2 > uhci_hcd 0000:00:1d.0: irq 19, io base 0x0000ff80 > usb usb2: configuration #1 chosen from 1 choice > hub 2-0:1.0: USB hub found > hub 2-0:1.0: 2 ports detected > ACPI: PCI Interrupt 0000:00:1d.1[B] -> GSI 19 (level, low) -> IRQ 17 > PCI: Setting latency timer of device 0000:00:1d.1 to 64 > uhci_hcd 0000:00:1d.1: UHCI Host Controller > uhci_hcd 0000:00:1d.1: new USB bus registered, assigned bus number 3 > uhci_hcd 0000:00:1d.1: irq 17, io base 0x0000ff60 > usb usb3: configuration #1 chosen from 1 choice > hub 3-0:1.0: USB hub found > hub 3-0:1.0: 2 ports detected > ACPI: PCI Interrupt 0000:00:1d.2[C] -> GSI 18 (level, low) -> IRQ 16 > PCI: Setting latency timer of device 0000:00:1d.2 to 64 > uhci_hcd 0000:00:1d.2: UHCI Host Controller > uhci_hcd 0000:00:1d.2: new USB bus registered, assigned bus number 4 > uhci_hcd 0000:00:1d.2: irq 16, io base 0x0000ff40 > usb usb4: configuration #1 chosen from 1 choice > hub 4-0:1.0: USB hub found > hub 4-0:1.0: 2 ports detected > usb 1-1: new high speed USB device using ehci_hcd and address 2 > ACPI: PCI Interrupt 0000:00:1d.3[A] -> GSI 16 (level, low) -> IRQ 19 > PCI: Setting latency timer of device 0000:00:1d.3 to 64 > uhci_hcd 0000:00:1d.3: UHCI Host Controller > uhci_hcd 0000:00:1d.3: new USB bus registered, assigned bus number 5 > uhci_hcd 0000:00:1d.3: irq 19, io base 0x0000ff20 > usb usb5: configuration #1 chosen from 1 choice > hub 5-0:1.0: USB hub found > hub 5-0:1.0: 2 ports detected Hyperthreading might be related to your race, but I don't think it is a necessary ingredient. Most likely, the hotplug system just starts up two modprobe processes that run in parallel. Alan Stern ------------------------------------------------------------------------- Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys-and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV _______________________________________________ linux-usb-devel@lists.sourceforge.net To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-devel
