[alsa-devel] Fwd: Solved Hercules RMX2

Daniel Mack zonque at gmail.com
Wed Apr 17 15:36:27 CEST 2013

Hi Daniel,

On 17.04.2013 08:32, Daniel Schürmann wrote:
> thank your advice!
> I am not a Hercules developer, I am developer of the Mixxx DJ Software and
> I am just trying to make
> the thing work!
> I have just read within the USB 2.0 speck to find out if there are specific
> timeouts to deal with.
> I have found:
> § Standard Device Requests
> If I understand it correct, there is a 5-second limit for storing data into
> the device.
> I think changing the sample rate is such a operation.
> So what about changing the Limit to 5000 ms for all "Set requests"
> bmRequest = 21.
> See Audio20 § 5.2.2
> All other timeouts might be reduced to 500 ms but I would leave them
> untouched at 1000 ms , just in case.

Ok, can you cook a patch which sets the limit parameter
usb_control_msg() to 5000 for SET request but leaves the former default
value of 1000 in other cases? The patch should be all local to
snd_usb_ctl_msg() then.


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