From mboxrd@z Thu Jan  1 00:00:00 1970
From: Alexey Fisher <bug-track@fisher-privat.net>
Subject: Re: [regression] probably in mixer.c code
Date: Tue, 08 Nov 2011 13:39:38 +0100
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To: Takashi Iwai <tiwai@suse.de>
Cc: alsa-devel@alsa-project.org
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Am 08.11.2011 13:11, schrieb Takashi Iwai:
> At Tue, 08 Nov 2011 12:25:06 +0100,
> Alexey Fisher wrote:
>>
>> Am 08.11.2011 10:59, schrieb Takashi Iwai:
>>> At Tue, 08 Nov 2011 09:49:13 +0100,
>>> Alexey Fisher wrote:
>>>>
>>>> Hallo all, Takashi,
>>>>
>>>> there is one regression in current linux main tree:
>>>>
>>>> cval->res quirks do not work any more. See usb/mixer.c:1150
>>>> Are there was some work in this area or may be some one bisected this
>>>> bug down?
>>>
>>> Are you referring to the device 046d:09a4, which sets the mixer range
>>> manually?  If yes, does the patch below work?
>>>
>>
>>
>> No, i referring to devices 046d:0991, 046d:081d, i don't have access to
>> 046d:09a4.
>>
>> This part is broken for me:
>>           case USB_ID(0x046d, 0x0991):
>>           /* Most audio usb devices lie about volume resolution.
>>            * Most Logitech webcams have res = 384.
>>            * Proboly there is some logitech magic behind this number --fishor
>>            */
>>                   if (!strcmp(kctl->id.name, "Mic Capture Volume")) {
>>                           snd_printk(KERN_INFO
>>                                   "set resolution quirk: cval->res = 384\n");
>>                           cval->res = 384;
>>                   }
>>                   break;
>
> OK, so _what_ is actually broken?  Do you see the message but
> cval->res is overridden later?

yes.