Re: [opensuse-kernel] USBmidi(?) problem in 13.2 kernel

6 Dec 2014

      Am 28.11.2014 um 12:01 schrieb Oliver Neukum:
...
Please try
usbcore.old_scheme_first=1
this did not change anything to the better, now after the
"submitted URB while active" warning / backtrace I got an
additional

[  119.616525] WARNING: CPU: 1 PID: 1692 at ../kernel/timer.c:1147 call_timer_fn+0x115/0x130()
[  119.616534] timer: snd_usbmidi_error_timer+0x0/0xa0 [snd_usbmidi_lib] preempt leak: 00000100 -> 00000101

But Takashi's patch did help so this is probably not that
important anymore :)
...
and provide "lsusb -v"
Bus 004 Device 005: ID 0763:1015 Midiman M-Audio Keystation
Device Descriptor:
  bLength                18
  bDescriptorType         1
  bcdUSB               1.00
  bDeviceClass            0 (Defined at Interface level)
  bDeviceSubClass         0 
  bDeviceProtocol         0 
  bMaxPacketSize0        64
  idVendor           0x0763 Midiman
  idProduct          0x1015 M-Audio Keystation
  bcdDevice            1.21
  iManufacturer           0 
  iProduct                0 
  iSerial                 0 
  bNumConfigurations      1
  Configuration Descriptor:
    bLength                 9
    bDescriptorType         2
    wTotalLength           39
    bNumInterfaces          1
    bConfigurationValue     1
    iConfiguration          0 
    bmAttributes         0xa0
      (Bus Powered)
      Remote Wakeup
    MaxPower                0mA
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        0
      bAlternateSetting       0
      bNumEndpoints           3
      bInterfaceClass       255 Vendor Specific Class
      bInterfaceSubClass      0 
      bInterfaceProtocol      0 
      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     0x0020  1x 32 bytes
        bInterval               1
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x82  EP 2 IN
        bmAttributes            2
          Transfer Type            Bulk
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0020  1x 32 bytes
        bInterval               0
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x02  EP 2 OUT
        bmAttributes            2
          Transfer Type            Bulk
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0020  1x 32 bytes
        bInterval               0
Device Status:     0x0000
  (Bus Powered)

(in case this is still of interest :)

Best regards,

	Stefan
-- 
Stefan Seyfried

"For a successful technology, reality must take precedence over
 public relations, for nature cannot be fooled." -- Richard Feynman
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