Sound got mute in kernel 3.5.4 (Fast Track Pro USB Sound Card), found commit that causes it - how to proceed?

Hello,

today I updated kernel to 3.5.4 and noticed, that all my sound from Fast Track Pro USB Sound Card got mute. I haven't noticed any error reports or messages, all seems to work, the card is just silent. I downgraded to 3.5.3 and applied patched from usb sound module one by one and found out, that 3.5.4 minus " ALSA: snd-usb: fix calls to next_packet_size " works fine:

http://git.kernel.org/?p=linux/kernel/git/stable/linux-stable.git;a=commitdiff;h=ca150f7ade5973c3bce19261bca6174d5c3cc342

Does this change require some update of configuration I missed?

There are some informations about device from lsusb:
http://pastie.org/private/odiuw0ve3iszdat9mwpa
My system runs 64 bit Arch Linux, there is config used by it:
https://projects.archlinux.org/svntogit/packages.git/plain/trunk/config.x86_64?h=packages/linux&id=59ae346478ff01f0d2dc47b04a3a1297046b1900

How can I proceed with this issue? Any more information I can provide to help in solving this?

Thank you,
Andrzej Giniewicz.

On Arch Linux forums we got another report, that USB Sound Card got mute, and works again after removing that change, so there are least two affected devices now:

ID 04d2:5051 Altec Lansing Technologies
ID 0763:2012 Midiman M-Audio Fast Track Pro

Got report about third case of muted device, this time more popular one:

ID 041e:3040 Creative Technology, Ltd SoundBlaster Live! 24-bit External SB0490

I don't know if those informations help at all, but this is best I can do for now, because I have no idea what to look for. I have one of affected devices and I have no troubles with patching/rebuilding module, so I'd be happy to offer any help, just tell me what logs, device info or debug outputs are needed and I will do my best to provide them.

I've filed a bugzilla entry for this. Shouldn't be hard to fix now that you've bisected it, thanks for that.

https://bugzilla.kernel.org/show_bug.cgi?id=48051

regards,
dan carpenter

in 3.5.5 USB soundcards work again, thanks to commit "ALSA: snd-usb: fix next_packet_size calls for pause case"

http://git.kernel.org/?p=linux/kernel/git/stable/linux-stable.git;a=commit;h=8dce30c89113e314d29d3b8f362aadff8087fccb

The bug can be closed now (also added comment on bugzilla that its fixed).

Thanks,
Andrzej.

At Sat, 06 Oct 2012 18:23:57 +0200,

Thanks for checking (and sorry for the late reply, as I've been on vacation for weeks).

Takashi