[alsa-devel] usbaudio: Support for USB audio v2.0 devices

[The Source]

27.04.2010 19:43, Daniel Mack пишет:
> On Tue, Apr 27, 2010 at 07:29:52PM +0400, The Source wrote:
>    
>> 27.04.2010 18:07, Daniel Mack пишет:
>>      
>>> On Tue, Apr 27, 2010 at 05:31:35PM +0400, The Source wrote:
>>>        
>>>> Perhaps I should've posted my problem in this thread earlier. Here's the
>>>> summary:
>>>> Creative X-Fi Notebook stopped working after upgrading from 1.0.22.1 to
>>>> 1.0.23 (worked just fine before).
>>>> dmesg gives the following:
>>>>
>>>> usb 8-2: new full speed USB device using uhci_hcd and address 2
>>>> usb 8-2: New USB device found, idVendor=041e, idProduct=30d2
>>>> usb 8-2: New USB device strings: Mfr=1, Product=2, SerialNumber=0
>>>> usb 8-2: Product: SB X-Fi Notebook
>>>> usb 8-2: Manufacturer: Creative Technology Ltd
>>>> usb 8-2: configuration #1 chosen from 1 choice
>>>> input: Creative Technology Ltd SB X-Fi Notebook as
>>>> /devices/pci0000:00/0000:00:1d.2/usb8/8-2/8-2:1.3/input/input11
>>>> generic-usb 0003:041E:30D2.0002: input,hidraw1: USB HID v1.11 Device
>>>> [Creative Technology Ltd SB X-Fi Notebook] on usb-0000:00:1d.2-2/input3
>>>> input: Creative Technology Ltd SB X-Fi Notebook as
>>>> /devices/pci0000:00/0000:00:1d.2/usb8/8-2/8-2:1.4/input/input12
>>>> generic-usb 0003:041E:30D2.0003: input,hidraw2: USB HID v1.11 Keyboard
>>>> [Creative Technology Ltd SB X-Fi Notebook] on usb-0000:00:1d.2-2/input4
>>>> ALSA pcm.c:174: 2:1:1: endpoint lacks sample rate attribute bit, cannot
>>>> set.
>>>> ALSA pcm.c:174: 2:2:1: endpoint lacks sample rate attribute bit, cannot
>>>> set.
>>>>          
>>> And you say this is a regression from earlier versions? Would you be
>>> able to bisect this problem?
>>>
>>> Daniel
>>>
>>>        
>> Gladly, if you just tell me how :)
>>      
> You would check out the latest mainline sources:
>
>    $ git clone git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6.git
>    $ cd linux-2.6
>
> Then create a branch and merge the latest ALSA patches:
>
>    $ git checkout -b alsa
>    $ git pull git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6.git
>
> Then build and install the kernel and verify it still shows the error.
> Start the bisect and mark the current revision as 'bad':
>
>    $ git bisect start
>    $ git bisect bad
>
> Assuming that v2.6.34-rc5 (before the merge) still works, you would mark
> this as 'good':
>
>    $ git bisect good v2.6.34-rc5
>
> git will now iterate you thru the changes and drop you off at chosen
> points. Just compile the tree you get, and tell git whether this is a
> good or bad one:
>
>    $ git bisect good
>    or
>    $ git bisect bad
>
> Then recompile and test again After some steps, it will tell you which
> commit precisely broke it.
>
> HTH,
> Daniel
>
>
>    
I'll try that. But is there any way to do this just with alsa and not 
with entire kernel? Compiling kernel is a loooong process.