• apt-cache search linux-rt
  # pick the linux-image-xxx from that, linux-image-2.6.31-11-rt in my case
• sudo apt-get build-dep linux-image-2.6.31-11-rt
• apt-get source linux-image-2.6.31-11-rt
  # you'll get a directory linux-rt-2.6.31
• cd linux-rt-2.6.31
• find | grep usbquirks.h
  # you'll see ./sound/usb/usbquirks.h, edit it
  
• dpkg-buildpackage -b -us -uc -rfakeroot
  # this runs for a while
  
• cd ..
  
• sudo dpkg -i linux-image-2.6.31-11-rt_2.6.31-11.154_i386.deb
• # boot the new kernel

On Wed, 2010-07-28 at 15:49 -0300, Bernardo Barros wrote:
  

sorry, I can't find this file. what is the complete path? And could
you point out some guide how I could recompile the driver?
    

Sorry, that is not easy to explain and involves much work (that file is
part of the kernel source tree). I'll see if I can add this to my next
build of the rt kernel for Planet CCRMA. 

-- Fernando



  

2010/7/28 Clemens Ladisch <clemens@ladisch.de>
    

Bernardo Barros wrote:
      

Bus 001 Device 008: ID 0582:0064 Roland Corp. EDIROL PCR-1 WAVE
        

For some reason, the driver has a quirk only for the MIDI interface of
the PCR-1 but not for the PCM interfaces.

Try adding the following entry to sound/usb/quirks-table.h or
usbquirks.h and then recompiling the driver:


{
       USB_DEVICE(0x0582, 0x0064),
       .driver_info = (unsigned long) & (const struct snd_usb_audio_quirk) {
               .vendor_name = "EDIROL",
               .product_name = "PCR-1",
               .ifnum = QUIRK_ANY_INTERFACE,
               .type = QUIRK_COMPOSITE,
               .data = (const struct snd_usb_audio_quirk[]) {
                       {
                               .ifnum = 1,
                               .type = QUIRK_AUDIO_STANDARD_INTERFACE
                       },
                       {
                               .ifnum = 2,
                               .type = QUIRK_AUDIO_STANDARD_INTERFACE
                       },
                       {
                               .ifnum = -1
                       }
               }
       }
},
      

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