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From: Daniel Mack <zonque@gmail.com>
To: "Daniel Schürmann" <daschuer@mixxx.org>
Cc: alsa-devel@alsa-project.org
Subject: Re: Fwd:  Solved Hercules RMX2
Date: Wed, 17 Apr 2013 15:36:27 +0200	[thread overview]
Message-ID: <516EA55B.90001@gmail.com> (raw)
In-Reply-To: <CABVYHNiPNiBdizdzSKtb7gc+0b3S=4XJn_4zWvDUZoCSXUHf1w@mail.gmail.com>

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:
> § 9.2.6.4 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.


Thanks,
Daniel

  reply	other threads:[~2013-04-17 13:36 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-04-15 22:04 Solved Hercules RMX2 Daniel Schürmann
2013-04-16 14:10 ` Gabriel M. Beddingfield
2013-04-16 15:12   ` Daniel Schürmann
2013-04-16 15:35     ` Gabriel M. Beddingfield
2013-04-16 16:05       ` Daniel Mack
2013-04-16 19:14         ` Daniel Schürmann
2013-04-16 19:23           ` Daniel Mack
2013-04-16 19:24             ` Daniel Mack
     [not found]               ` <CABVYHNiUu+Bm=uVNHu+d6LUENAfr0FxnwE2HvmUGyzt7a1UYVg@mail.gmail.com>
2013-04-17  6:32                 ` Fwd: " Daniel Schürmann
2013-04-17 13:36                   ` Daniel Mack [this message]
2013-04-19 21:39             ` [PATCH] ALSA: snd-usb-audio: set the timeout for usb control set messages to 5000 ms Daniel Schürmann
2013-04-19 22:50               ` Daniel Mack

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