> -----Original Message----- > From: Sarah Sharp [mailto:sarah.a.sharp@xxxxxxxxxxxxxxx] > Sent: Thursday, September 09, 2010 12:31 PM > To: John Youn > Cc: Greg KH; linux-usb@xxxxxxxxxxxxxxx > Subject: Re: [PATCH 0/4] usbutils fixes for USB 3.0 devices > > On Thu, Sep 09, 2010 at 12:13:37PM -0700, John Youn wrote: > > > > I've tested the patches with our hardware and it doesn't show up > in > > > lsusb. It shows up in /proc/bus/usb/devices and it also works fine > as > > > both a 2.0 and 3.0 hub. Downstream 3.0 and 2.0 devices show up in > > > lsusb as well. Only the hub itself does not. There are no > > > error/warning messages from lsusb. VIA hub also shows up fine. > I've > > > attached the device/hub descriptor output. > > > > > > Do you have CONFIG_USB_SUSPEND set to yes? That can cause USB hubs > > > under xHCI to disappear when they can't be suspended. > > > > > > Sarah Sharp > > > > That seemed to be the issue. I can now see the details of our hub in > lsusb. However it seg faults just before displaying the 3.0 root hub > port status. This happens with or without our hub plugged in. The > root hub was not displaying before with CONFIG_USB_SUSPEND=y. > > Which seg faults, the kernel or lsusb? Please send dmesg and USBmon > output. The seg fault is from lsusb. Could there be some parse error of the data coming from the root hub since it returns a 2.0 formatted hub descriptor? Lsusb, dmesg, and usbmon output: Bus 009 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub Device Descriptor: bLength 18 bDescriptorType 1 bcdUSB 3.00 bDeviceClass 9 Hub bDeviceSubClass 0 Unused bDeviceProtocol 3 bMaxPacketSize0 9 idVendor 0x1d6b Linux Foundation idProduct 0x0003 3.0 root hub bcdDevice 2.06 iManufacturer 3 Linux 2.6.35+ xhci_hcd iProduct 2 xHCI Host Controller iSerial 1 0000:06:00.0 bNumConfigurations 1 Configuration Descriptor: bLength 9 bDescriptorType 2 wTotalLength 25 bNumInterfaces 1 bConfigurationValue 1 iConfiguration 0 bmAttributes 0xe0 Self Powered Remote Wakeup MaxPower 0mA Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 0 bAlternateSetting 0 bNumEndpoints 1 bInterfaceClass 9 Hub bInterfaceSubClass 0 Unused bInterfaceProtocol 0 Full speed (or root) hub iInterface 0 Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x81 EP 1 IN bmAttributes 3 Transfer Type Interrupt Synch Type None Usage Type Data wMaxPacketSize 0x0004 1x 4 bytes bInterval 12 Hub Descriptor: bLength 9 bDescriptorType 41 nNbrPorts 4 wHubCharacteristic 0x0009 Per-port power switching Per-port overcurrent protection bPwrOn2PwrGood 10 * 2 milli seconds bHubContrCurrent 0 milli Ampere bHubDecLat 0.0 micro seconds wHubDelay 4080 nano seconds DeviceRemovable 0x00 Hub Port Status: Segmentation fault (core dumped) [ 103.151129] xhci_hcd 0000:06:00.0: get port status, actual port 0 status = 0x2a0 [ 103.151133] xhci_hcd 0000:06:00.0: Get port status returned 0x100 [ 103.151143] lsusb[2066]: segfault at a0009042909 ip 0000003267847ff7 sp 00007fff33a51ae0 error 4 in libc-2.12.so[3267800000+175000] ffff88009c0af780 2509549790 S Ci:9:001:0 s 80 06 0300 0000 00ff 255 < ffff88009c0af780 2509549812 C Ci:9:001:0 0 4 = 04030904 ffff88009c0af780 2509549822 S Ci:9:001:0 s 80 06 0303 0409 00ff 255 < ffff88009c0af780 2509549827 C Ci:9:001:0 0 46 = 2e034c00 69006e00 75007800 20003200 2e003600 2e003300 35002b00 20007800 ffff88009c0af780 2509549831 S Ci:9:001:0 s 80 06 0300 0000 00ff 255 < ffff88009c0af780 2509549833 C Ci:9:001:0 0 4 = 04030904 ffff88009c0af780 2509549837 S Ci:9:001:0 s 80 06 0302 0409 00ff 255 < ffff88009c0af780 2509549840 C Ci:9:001:0 0 42 = 2a037800 48004300 49002000 48006f00 73007400 20004300 6f006e00 74007200 ffff88009c0af780 2509549843 S Ci:9:001:0 s 80 06 0300 0000 00ff 255 < ffff88009c0af780 2509549845 C Ci:9:001:0 0 4 = 04030904 ffff88009c0af780 2509549849 S Ci:9:001:0 s 80 06 0301 0409 00ff 255 < ffff88009c0af780 2509549851 C Ci:9:001:0 0 26 = 1a033000 30003000 30003a00 30003600 3a003000 30002e00 3000 ffff88009c0af780 2509549996 S Ci:9:001:0 s a0 06 2a00 0000 000d 13 < ffff88009c0af780 2509550000 C Ci:9:001:0 0 13 = 09290409 000a0000 ff000000 00 ffff88009c0af780 2509550040 S Ci:9:001:0 s a3 00 0000 0001 0004 4 < ffff88009c0af780 2509550067 C Ci:9:001:0 0 4 = 00010000 -- 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
