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

[The Source]

04.05.2010 00:55, Daniel Mack пишет:
> On Sun, May 02, 2010 at 08:56:18PM +0400, The Source wrote:
>    
>> 27.04.2010 21:33, Daniel Mack пишет:
>>      
>>> On Tue, Apr 27, 2010 at 09:27:15PM +0400, The Source wrote:
>>>        
>>>> 27.04.2010 19:43, Daniel Mack пишет:
>>>>          
>>>>> 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.
>>>>          
>>> The description above won't touch much things outside the ALSA tree
>>> during the bisect, so it shouldn't take long to compile.
>>>
>>> Thanks for helping,
>>> Daniel
>>>
>>>
>>>        
>> I'm sorry, but after 2 or 3 steps (of ~10) I got kernel that doesn't
>> even boot properly (2.6.34-rc4, something with sata is broken) so I
>> can't test my card with this kernel. Should I mark current version
>> as bad and continue or something else can be done?
>>      
> Hmm, so you say you can't boot a vanilla (unmodified) 2.6.34-rc4? Is
> your problem fixed in the current git HEAD? The bisect procedure I
> described shouldn't touch anything else than sound code, so SATA should
> be unaffected. Anyway, you can skip unbootable or uncompilable versions
> with
>
>    $ git bisect skip
>
> HTH,
> Daniel
>
>
>    
Bisect results:

23caaf19b11eda7054348452e1618d4512a86907 is the first bad commit
commit 23caaf19b11eda7054348452e1618d4512a86907
Author: Daniel Mack <daniel at caiaq.de>
Date:   Thu Mar 11 21:13:25 2010 +0100

     ALSA: usb-mixer: Add support for Audio Class v2.0

     USB Audio Class v2.0 compliant devices have different descriptors and a
     different way of setting/getting min/max/res/cur properties. This patch
     adds support for them.

     Signed-off-by: Daniel Mack <daniel at caiaq.de>
     Cc: Clemens Ladisch <clemens at ladisch.de>
     Signed-off-by: Takashi Iwai <tiwai at suse.de>

:040000 040000 db0691095b20f0872c9042e6498ce40693d69241 
7cd9e29352fd45e50968b4a17891d1c3225aaba9 M    include
:040000 040000 981c7c69fc8695281929677ebccf3bdae5ef41de 
c5bec5c3954278601ec4b29226f4671333262f04 M    sound